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COASTAL ZOINTE INFORINIATION CENTER DISTRIBUTION OF SUBMERGED AQUATIC VEGETATION IN THE CHESAPEAKE -BAY AND TRIBUTARIES AND CHINCOTEAGUE BAY - 1986 39 .1 42 14@ @46 47 r f411 50 51 Robert Orth w 61 58 2 63 Jim Simons n 0. ' Judith Capelli 'N14 'X 65 11 70 7 r 74 75 Virginia Carter "Q1 V - - 84 05 Adam Frisch 79 ei, 92 6, Larry Hindman I Stephen Hodges 87 a 90 93 x _'_89 91 C:@,, 92 Kenneth Moore Nancy Rybicki 94 97 911 100 101 --;@ 107 log ir 103 109 x A'06 to go 113 14 A-1117 -'11'8\ 115 119 Ik 120 12, 122 t23 124 130 "@125 126 127 129 '29N 19 132 133 1 134 1 139 1 141 _0 741 14 135 136 137 ' - K I - FUNDED BY CONTRIBUTIONS FROM MARYLAND DEPARTMENT OF NATURAL RESOURCES VIRGINIA INSTITUTE OF MARINE SCIENCE U.S. FISH AND WILDLIFE SERVICE S. ARMY CORPS OF ENGINEERS, BALTIMORE AND NORFOLK DISTRICTS U.S. ENVIRONMENTAL PROTECTION AGENCY COMMITTEE TO PRESERVE ASSATEAGUE ISLAND QK ALLIED CHEMICAL CORPORATION 122.8 NATIONAL OCEANOGRAPHIC ATMOSPHERIC ADMINISTRATION T40 D57 1986 Distribution of Submerged Aquatic Vegetation in 0 the Chesapeake Bay and Tributaries and Chincoteague Bay - 1986 by Robert Orthi, Jim Simons2 Judith Capellil, Virginia Carted, Adam Frischi , Larry Hindman4 Stephen Hodges2 , Kenneth Moorel , and Nancy Rybicki3 1. Virginia Institute of Marine Science School of Marine Science College of William and Mary Gloucester Point, VA 23062 2. U.S. EPA-EPIC The Bionetics Corporation - Contractor Vint Hill Farms Station Warrenton, VA 22186 3. U.S. Geological Survey Reston, VA 22092 4. Maryland Dept. of Natural Resources Forest Parks and Wildlife Administration P.O. Box 68 Wye Wills, MD 21679 Property of CSC LibrarY Funded by: Maryland Department of Natural Resources Virginia Institute of Marine Science U.S. Fish and Wildlife Service U.S. Army Corps of Engineers, Baltimore and Norfolk Districts U.S. Environmental Protection Agency Committee to Preserve Assateague Island Allied Chemical Corporation National Oceanographic Atmospheric Administration S 1.,,EPARTMENT OF COMMERCE NOA 10 A S I I L SERVICES CENTER SOUTH HOBSON AVENUE -h'@LESTON, SC 29405-24)o 0 0 0 0 a @w @ - @@ :, - @ I t@@ Property Or NOAA Coastal Services Centw Library tA CONTENTS Page Tables .............................................................. iv Figures ............................................................. v Acknowledgements .................................................... vi Executive Summary ................................................... viii 1. Introduction .................................................... I 2. SAV Species ...................................................... 3 3. Methods ......................................................... 4 Aerial photography .......................................... 4 Mapping process ............................................. 7 Ground truth and other data bases ........................... 17 Data presentation ........................................... 24 4. Results ......................................................... 41 Susquehanna Flats ........................................... 41 Upper Eastern Shore ......................................... 42 Upper Western Shore ........................................ 42 Chester River ............................................... 43 Central Western Shore ....................................... 44 Eastern Bay ................................................. 44 Choptank River .............................................. 45 Patuxent River .............................................. 45 Middle Western Shore ........................................ 46 Lower Potomac River ......................................... 46 Upper Potomac River ......................................... 49 Middle Eastern Shore ........................................ 55 Tangier Island Complex ...................................... 55 Lower Eastern Shore ......................................... 56 Reedville ................................................... 59 Rappahannock River Complex .................................. 59 New Point Comfort Region .................................... 60 Mobjack Bay Complex ......................................... 60 York River .................................................. 61 Lower Western Shore ......................................... 62 James River ................................................. 62 Chincoteague Bay ............................................ 63 5. Literature Cited ................................................ 66 CONTENTS (CONTINUED) Paqe 6. Appendices A. Sgecies of submerged aquatic plants found in the C esapeake Bay and tributaries ............................ 70 B. Percent cover for SAV species present in beds identified in the Havre de Grace quadrangle based on Stan Kollar's field observations ....................................... 71 C. Topographic quadrangles showing the distribution of SAV .................................................... 74 TABLES Number Rae I Guidelines for acquisition of aerial photographs . . . . . 6 2 List of topographic quadrangles in Chesapeake Bay and Chincoteague Bay study area . . . . . . . . . . . . . . . 9 3 Area description for 21 major sections in the Chesapeake Bay SAV study area . . . . . . . . . . . . . . . . . . . 15 4 Total area of SAV by quadrangles for 1978, 1984, 1985 and 1986 . . . . . . . . . . . . . . . . . . . . . . . . 25 5 Number of hectares of SAV for each of the major sections in the bay for 1978, 1984, 1985 and 1986 . . . . . . . . 31 6 Number of square meters of SAV in each quadrangle of the 21 major sections for 1986 . . . . . . . . . . . . . . . 33 7 Frequency of stations sampled by Md.DNR with SAV in upper Chesapeake Bay, 1971-1986 . . . . . . . . . . . . . . . . 40 8 Species of SAV found on vegetated transects in the estuary of the Potomac River, summer, 1986 . . . . . . . . . . . 47 9 Relative occurrence of vegetated transects, stations and 31 grabs for the tidal Potomac River and estuary, 1986 . . . 47 10 Species of submersed aquatic plants found on vegetated transects in the tidal Potomac River and transition zone, 1986 . . . . . . . . . . . . . . . . . . . . . . . 51 11 Frequency of individual species in vegetated grabs in the tidal Potomac River, 1984-1986 . . ... . . . . . . . . . 54 12 Areas of SAV at historical sites in the Lower Bay zone, 1937-1986 . . . . . . . . . . . . . . . . . . . . . . . . 57 iv FIGURES Number ftqe 1 Location of topographic quadrangles in the Chesapeake Bay and tributaries and Chincoteague Bay . . . . . . . . 8 2 Crown density scale for estimating SAV bed density . . . . 12 3 Location of 3 zones and 21 major sections in the Chesapeake Bay and tributaries for delineation of SAV . . . . . . . 14 4 Location of USGS vegetation sampling transects in the tidal Potomac River above Mattawoman Creek . . . . . . . . . . 19 5 Location of USGS vegetation sampling transects from Mattawoman Creek to Port Tobacco River . . . . . . . . . . 20 6 Location of USGS vegetation sampling transects from the Wicomico River to St. Mary's River . . . . . . . . . . . . 21 7 Percent cover of Hydrilla in vegetated areas of the tidal Potomac River in the fall, 1986 . . . . . . . . . . 52 8 Percent cover of submersed aquatic vegetation in the tidal Potomac River in the fall, 1986 . . . . . . . . . . . . . 53 9 Location of major SAV areas in Chincot3ague Bay-1986 . . . 64 ACKNOWLEDGEMENTS We would like to gratefully acknowledge all of the federal and state agencies who financially supported this project - Maryland Department of Natural Resources, U.S. Army Corps of Engineers - Baltimore and Norfolk Districts, Virginia Institute of Marine Science, U.S. Fish and Wildlife Service, U.S. Environmental Protection Agency, the Committee to Preserve Assateague island, Inc., National Oceanographic and Atmospheric 3 Administration and Allied Chemical Corp. Acknowledgement would not be complete without commendation for the citizen groups which provided "ground truthing" of SAV beds which was used in conjunction with interpretation of the 1986 photography. The Citizens' Program for the Chesapeake Bay and the Chesapeake Bay Foundation, together with the U.S. Fish and Wildlife Service, organized 150 citizens to report locations of grassbeds around the Bay. In addition, four members of the Maryland Charterboat Association, funded by the Maryland DNR, participated in the ground truthing program and contributed valuable information on location of grassbeds. The production of this report required the dedication of numerous technicians, artists and photographers. The following people deserve a note of thanks: Bert Brun, U.S. Fish and Wildlife Service (F&WS); Frank Dawson, Maryland Department of Natural Resources (Md.DNR); Woody Francis, Baltimore Corps of Engineers (COE); Michelle Feeley, Mary Jo Shackelford, Harold Burrell, Kay Stubblefield, Sylvia Motley, Billy Jenkins, Tim Smithwick, Jennifer Whiting, Jan Hodges, Maxine Butler and Ruth Hershner, Virginia Institute of Marine Science (VIMS); Rich Batiuk, EPA Chesapeake Bay Program (USEPA-CBP); Ann Pesiri Swanson, Chesapeake Bay Foundation (CBF); Janet Vi Hardy Harvey, Citizens Program for the Chesapeake Bay (CPCB); Stan Kollar, Harford Community College (HCC); Danny Elliot, Jay Kress, Ernie Stone, Evan Crow, the Bionetics Corporation; Court Stevenson, University of Maryland Horn Point Laboratory (HPL); Dr. Donna M. E. Ware, College of William and Mary Herbarium. Catherine Carter, Walter Rhodes, William Perry, Jr., and David Wineholt should be recognized for conducting the field work associated with the Md.DNR ground survey. Technical reviews of the 1986 report were Bert Brun (F&WS), Linda Hurley (F&WS), Frank Dawson (Md.DNR), Woody Francis (Corps of Engineers, Baltimore District), Rick Batiuk (USEPA CBP), Michael Sullivan (Washington, D.C., Dept. of Environmental Programs) and Janice Carter Lovejoy and Catherine Harold (Virginia Council on the Environment). Vii EXECUTIVE SUMMARY The distribution and abundance.of submerged aquatic vegetation (SAV) was mapped in 1986 for the entire Chesapeake Bay and tributaries, and for Chincoteague Bay, using color aerial photography at a scale of 1:24,000. Ground truth information was available from USGS, Md.DNR, University of Maryland, Horn Point Laboratory, Harford Community College and VIMS. Citizen support via the Chesapeake Bay Foundation and the Citizens Program for the Chesapeake Bay as well as the Maryland Charterboat Association via the Maryland DNR Watermen's Assistance Program provided additional groundtruth support. In 1986, the Chesapeake Bay (exclusive of Chincoteague Bay) had 19,166 hectares of SAV mapped from aerial photography, a decrease of 1.2% from the 19,390 hectares mapped in 1985. The Upper Bay zone had 2,742 hectares of SAV in 1986 (14.3% of the total SAV in the bay). This represents a decrease of 9.4% from that reported in 1985. Eighty-five percent of the SAV in this zone was located in the Susquehanna Flats section. Transplantation of Vallisneria americana and Heteranthera dubia to the Susquehanna Flats by Harford Community College scientists has proved successful and transplants are continuing to grow and spread. One section of the Upper Bay zone showed increased abundance of SAV (Susquehanna Flats), while three sections showed decreases in abundance (Upper Eastern Shore; Chester River; Upper Western Shore). Aerial photography for 1986 was unavailable for three quadrangles (Edgewood, Middle River, and Gunpowder Neck) which had 214 of the 239 hectares of SAV in the Upper Western Shore in 1985. While SAV beds were not mapped in 1986 in these three quadrangles, nor was acreage data collected, SAV presence was confirmed for each by ground truth surveys. Therefore, Viii total hectares reported here for the Upper Western Shore section and the Upper zone of the bay may underestimate SAV actually present. SAV beds in the Upper Bay zone consisted of 13 species. Dominant species in the Susquehanna Flats were Myriophyllum spicatum, Hydrilla verticillata, and Vallisneria americana, while the Chester River was dominated by Potamogeton perfoliatus and Ruppia maritima. The Middle Bay zone had 4088 hectares of SAV in 1986 (21.3% of the total SAV in the bay), which represents a 18% decrease from that reported in 1985 but is still substantially more than what was reported in 1984 (984 hectares). Two sections in the zone showed an increase in SAV (Middle Eastern Shore; Upper Potomac River) while six sections showed decreases (Central Western Shore; Eastern Bay; Choptank River; Patuxent River; Middle Western Shore; Lower Potomac River). SAV beds in the mainstem of the Middle Bay zone consisted principally of Ruppia maritima, with six other species being reported. The Potomac River SAV beds consisted of fourteen different species, with the most prevalent being Myriophyllum spicatum and Hydrilla verticillata. SAV in the Upper Potomac River continues to increase in distribution and abundance. SAV has spread about 10 km further downstream from that observed in the tidal freshwater portion in 1985. Although H. verticillata is mainly the dominant species by abundance, other species coexist and, in some areas, are co-dominant with H. verticillata. The Lower Bay zone had 12,336 hectares of SAV in 1986 (64.4% of the total SAV in the bay), an increase of 8.4% since 1985. Seventy-one percent of the SAV in this zone is found along the bayside of the Eastern Shore, with the major beds being located on the broad, shallow flats in and adjacent to Tangier and Smith Islands. The Tangier Island Complex "oo ix represents the largest concentration of SAV in the entire bay (33.5% of all the SAV noted in 1986 was located in this section). SAV beds are also concentrated at the mouths of the major bayside creeks, principally Cherrystone Inlet, Hungars Creek, Mattawoman Creek, Occahannock Creek, Craddock Creek, Pungoteague Creek and Onancock Creek. SAV has increased 52% along the Eastern Shore bayside since the first baywide survey was conducted in 1978. Along the western shore of the zone, SAV beds are found in the Back River, Drum Island Flats adjacent to Plum Tree Island, the mouth of the York River adjacent to the Guinea Marshes, along the shoreline of the Mobjack Bay and in a small band from New Point Comfort to Horn Harbor. SAV beds here consist principally of two species, Zostera marina and Ruppia maritima. Zannichelia palustris has also been found in small isolated patches, but is not considered a dominant species. SAV was still absent in two of the six historical areas (areas where SAV has been mapped dating back to 1937) from the lower Bay Zone (Mumfort Island and Parrott Island). SAV decreased in the Jenkins Neck area (13%) but increased in the East River (35%), Fleets Bay (14%) and Vaucluse Shores (11%) areas from that reported in 1985. Zostera marina plants transplanted to unvegetated areas in the Piankatank and York Rivers between 1982 and 1985 have persisted, and in some cases, are rapidly expanding. These areas are being closely monitored by VIMS' scientists to assess overall changes in distribution of these transplants with time. SAV in the Chincoteague Bay was mapped for the first time in 1986, with 2,134 hectares found in four areas along the eastern side of the bay west of Assateague Island: west of the northern end of Chincoteague Island, West Bay, Green Run Bay and the Tingles Island area. SAV beds cover Ik approximately 6.6% of the total bay bottom area from Ocean City, MD, to the southern end of Chincoteague Bay. Z. marina and R. maritima were the two species found growing in these areas. Xi SECTION 1 INTRODUCTION A key component to understanding factor(s) affecting spatial and temporal changes in distribution and abundance of SAV is the documentation of annual patterns. Loc-al SAV beds can change dramatically over relatively short periods of time (less than one year) in response to changes in temperature, salinity, light regime and aspects of the biology of a particular SAV species, e.g. success of seed production. Scientifically based monitoring surveys of living resources can allow a correlation of changes in these communities with environmental variables. SAV communities in the Chesapeake Bay and tributaries have been photographed, mapped and digitized in 1978, 1984, and 1985 with portions of the upper bay mapped in 1979 and the lower bay mapped and digitized in 1980 and 1981 (Orth, et. al., 1979; Anderson and Macomber, 1980; Orth, et. al., 1985; 1986). Numerous SAV field surveys have been conducted but most have been limited to specific sections. No one field survey has delineated baywide SAV patterns. Aerial photography has proved to be a useful tool in examining SAV distribution patterns and, when combined with appropriate ground data, has provided an accurate, synoptic picture of baywide SAV distribution. The first objective of the 1986 work was to accurately determine SAV distribution for the entire bay and tributaries using aerial photographic methods and to compare distribution patterns in discrete sections of the bay with past data. In particular, interest was centered in areas of the mid- section of the bay where a substantial increase of SAV was observed in 1985 (almost 400% increase) from that recorded in 1984. Also of interest was the upper Potomac River where, in 1985, a total of 15 species of SAV occupied 1440 hectares of bottom which had no SAV in 1981. A second objective was to determine the distribution of SAV in Chincoteague Bay which had never before been mapped and digitized from aerial photography. Previous ground surveys, faunal studies and personal observation had indicated the presence of large stands in various sections of the bay (Anderson, 1970; Orth 1973). This mapping effort is the first attempt to delineate the distribution of SAV in this region. SECTION 2 SAV SPECIES Ten species of submerged aquatic vegetation are commonly found in the Chesapeake Bay and its tributaries. Zostera marina (eelgrass) is dominant in the lower reaches of the bay. Myriophyllum spicatum (water milfoil), Potamogeton pectinatus (sago pondweed), Potamogeton perfoliatus (redhead grass), Zannichelia palustris (horned pondweed), Vallisneria americana (wild celery), Elodea canadensis (common elodea), Ceratophyllu demersum (coontail) and ffAjAs guadalupensis (southern naiad) are less tolerant of high salinities and are found in the middle and upper reaches of the bay (Stevenson and Confer, 1978; Orth et al., 1979; Orth and Moore, 1981, 1983). Ruppia maritima (widgeongrass) is tolerant of a wide range of salinities and is found from the bay mouth to the Susquehanna Flats. Approximately eleven other species are only occasionally found and are present primarily in the middle and upper reaches of the bay and the rivers (Appendix A). Hydrilla verticillata (hydrilla), presently found in the Potomac River and Susquehanna Flats, has become the dominant species found there (Orth and Moore, 1984; Allaire et al., 1985; Rybicki et al., 1985, 1986). Data in this report confirm the continued spread and dominance of H. verticillata in the Potomac River. Zostera marina and Ruppia maritima are the two species currently found in Chincoteague Bay. SECTION 3 METHODS Aerial Photography Color aerial photography was the principal method used to assess the distribution and abundance of SAV in the Chesapeake Bay and its tributaries and Chincoteague Bay in the 1986 study. Predetermined flight lines for photographing areas that either had SAV or could potentially have SAV (i.e., all areas where water depths were less than 2 m at mean low water) were drawn on 1:250,000 scale USGS maps to ensure both complete coverage of SAV beds and inclusion of land features as control points for mapping accuracy. All photography used in the study was at a scale of 1:24,000 except for the Upper Potomac River above the Route 301 Bridge. This area was flown at a scale of 1:12,000 by AeroEco under contract to the Corps of Engineers Waterways Experiment Station. Some areas in Virginia were not included because of the known lack of SAV in those areas. One area was missed in Maryland because of difficulty in getting clearance to fly in restricted airspace. In addition to the aforementioned air photo sources, an additional source was utilized in mapping the Maryland waters. On July 4, 1986, NASA flew the entire Chesapeake Bay with U-2 aircraft using the IRIS-2 camera. The film used was color infrared. The photography was taken at 65,000 feet, resulting in a panoramic image with a scale at nadir of 1:32,500. Where possible, this film was used to augment that acquired for the project, in particular for'those areas on the Eastern Shore, that were flown in mid- October, where SAV reportedly disappeared sometime in August. The NASA film was utilized by rectifying it to a 1:24,000 black and white image, and using this 1:24,000 image as a mapping base while interpreting from the original color infrared photography. The general guidelines used for mission planning and execution are given in Table 1. These guidelines, which address tidal stage, plant growth, sun elevation, water and atmospheric transparency, turbidity, wind, sensor operation and plotting, allowed for acquisition of photographs under near-optimal conditions. The guidelines are critical because significant variation of any one item could significantly decrease the ability to detect the SAV. Aerial photography for SAV in Virginia was acquired by VIMS. The camera used for the aerial photography was a Fairchild CA-8 cartographic camera with a 152 mm (6 1/2 inch) focal length Bausch and Lomb Metrogon lens. Film was a Kodak 24 cm (9 1/2 inch) square positive Aerochrome MS type 2448. The camera was mounted in a camera port in the bottom fuselage of the VIMS single engine, fixed high wing De Havilland Beaver aircraft. A wratten IA haze filter was used inside the cone of the camera to reduce the degrading effect of atmospheric haze on image quality. Flights were conducted at an altitude of approximately 12,000 ft yielding a scale of 1:24,000 for the photograph, approximating that of a standard U.S. topographic quadrangle. The SAV photography for the Maryland waters was obtained by AeroEco under contract to the Bionetics Corporation (onsite contractor for EPA/EPIC). The camera used by AeroEco was a Zeiss Jena LMK 15/2323 with a 153 mm (6 inch) focal length Zeiss Jena Lamegon PI/C lens. The film used was Kodak 24 cm (9 1/2 inch) square positive Aerochrome MS type 2448. The camera was mounted in the bottom, fuselage of AeroEco's Partenavia P68 TABLE 1. GUIDELINES FOLLOWED DURING ACQUISITION OF AERIAL PHOTOGRAPHS. 1. Tidal Stage - Photography was acquired at low tide, +/- 0-1.5 ft., as predicted by the Nat-ional Ocean Survey tables. 2. Plant Growth - Imagery was acquired when growth stages ensured maximum delineation of SAV, and when phenologic stage overlap was greatest. 3. Sun Angle - Photography was acquired when surface reflection from sun glint did not covgr moreo than 30 percent of frame. Sun angle was generally between 20 and 40 to minimize water surface glitter. At least 60 percent line overlap and 20 percent side lap was used to minimize image degradation due to sun glint. 4. Turbidity - Photography was acquired when clarity of water ensured complete delineation of grass beds. This was visually determined from 41 the airplane to insure that SAV could be seen by the observer. 5. Wind - Photography was acquired during periods of no or low wind. Off- shore winds were preferred over on-shore winds when wind conditions could not be avoided. 6. Atmospherics - Photography was acquired during periods of no or low haze and/or clouds below aircraft. There could be no more than scattered or thin broken clouds, or thin overcast above aircraft, to ensure maximum SAV to bottom contrast. 7. Sensor Operation - Photography was acquired in the vertical mode with less than 5 degrees tilt. Scale/altitude/film/focal length combination permitted resolution and identification of one square meter area of SAV (surface). 8. Plotting - Each flight line included sufficient identifiable land area to assure accurate plotting of grass beds. Observer, a twin engine high wing reconnaissance aircraft. The photography was acquired at an approximate altitude of 12,000 feet, yielding a photographic scale of 1:24,000. Several problems were encountered during the acquisition of the 1986 aerial photography. Obtaining permission to fly in the restricted airspace over Aberdeen Proving Ground caused acquisition to be missed entirely over the Gunpowder, Bush, Back and Middle Rivers. Also, lateness in acquiring funding for the Maryland photography, along with the difficulty in getting good flying weather in the late summer, pushed acquisition of some areas into the middle of October. Because of the problems in the timing of the acquistion phase in these areas, i.e. imagery taken during parts of the SAV growing season, we approached the inter-year comparisons with caution recognizing the limitations of the data. Acquisition of the Virginia photography was hampered by camera malfunctions, but adequate photography of all Virginia areas were acquired. Mapping Process Fig. 1 gives the location of the topographic quadrangles in the study area. This area includes all regions with a potential for SAV growth. Most quadrangles are sequentially numbered to allow for more efficient access to the data. Table 2 gives the corresponding names of the 175 quadrangles shown in Fig. 1. SAV beds were identified on the photographs using all available information, including knowledge of aquatic grass signatures on the film, areas of grass coverage from previous flights, ground information, and aerial visual surveys. Mylar topographic quadrangles (1:24,000 except for 2 3 @4 P5 SJSM NNA ArS j 6.%74 )5,C II NAORE '15 14 15 16 17 22 19 20 21 let A 25 33 158 30 31 159 58 ISO k 35 rn 40 41 42 44_ 45 46 x 0 47@ '6' 49 50 51 52 @4. 4 53 54 x Az@ 55 58 162 60 Af TGr- 59 XXT3 I 164 64 6 70z W/ 66 6 7@ Y51 71 @74 160 76 84 5.2 @Si', 82 77- 86 x % U@Z 171 @17 9' 87 89 90 17@ .2 94 9,@, 9 100 101 '75 IN 105 107 003 x 8 09 115 112 113 116 Irr 118 119 et !@Qe 3@111 120 121 12U2 t23 124 0 'W 125 126 1274 128 129 130 133 154 135 314 141 142 144 5 146 N Sj 151 152 0 1 20 148 149 ,i-o KILOMETER 153 154 14 156 1511 Figure 1. Location of topographic quadrangles in the Chesapeake Bay and *121' '06 4. @2 9 41 0 1 .4 . " qv Z @14 tributaries and Chincoteague Bay for determining distribution of SAV. 8 TABLE 2. LIST OF USGS 7.5-MINUTE QUADRANGLES IN CHESAPEAKE BAY SAV STUDY ARE AND CORRESPONDING CODE NUMBERS (SEE FIG. 3 FOR LOCATION OF QUADRANGLES. THOSE TOPOGRAPHIC QUADRANGLES WITH SAV BEDS CAN BE FOUND IN APPENDIX C). 1. Conowingo Dam, Md.-Pa. 46. Preston, Md. 2. Aberdeen, Md. 47. Quantico, Va.-Md. 3. Havre de Grace, Md. 48. Indian Head, Va.-Md. 4. NorthEast, Md. 49. Benedict, Md. 5. Elkton, Md. 50. Prince Frederick, Md. 6. White Marsh, Md. 51. Sharps Island, Md. 7. Edgewood, Md. 52. Church Creek, Md. 8. Perryman, Md. 53. Cambridge, Md. 9. Spesutie, Md. 54. East New Market, Md. 10. Earleville, Md. 55. Widewater, Va.-Md. 11. Cecilton, Md. 56. Nanjemoy, Md. 12. Baltimore East, Md. 57. Mathias Point, Md.-Va. 13. Middle River, Md. 58. Popes Creek, Md. 14. Gunpowder Neck, Md. 59. Mechanicsville, Md. 15. Hanesville, Md. 60. Broomes Island, Md. 16. Betterton, Md. 61. Cove Point, Md. 17. Galena, Md. 62. Taylors Island, Md. 18. Curtis Bay, Md. 63. Golden Hill, Md. 19. Sparrows Point, Md. 64. Passapatanzy, Md.-Va. 20. Swan Point, Md. 65. Kin George, Va.-Md. 21. Rock Hall, Md. 66. Dahygren, Va.-Md. 22. Chestertown, Md. 67. Colonial Beach North, Md.-Va. 23. Round Bay, Md. 68. Rock Point, Md. 24. Gibson Island, Md. 69. Leonardtown, Md. 25. Love Point, Md. 70. Hollywood, Md. 26. Langford Creek, Md. 71. Solomons Island, Md. 27. Centreville, Md. 72. Barren Island, Md. 28. Washington West, Md.-D.C.-Va. 73. Honga, Md. 29. Washington East, D.C.-Md. 74. Wingate, Md. 30. South River, Md. 75. Nanticoke, Md. 31. Annapolis, Md. 76. Colonial Beach South, Va.-Md. 32. Kent Island, Md. 77. Stratford Hall, Va.-Md. 33. Queenstown, Md. 78. St. Clements Island, Va.-Md. 34. Alexandria, Va.-D.C.-Md. 79. Piney Point, Md.-Va. 35. Deale, Md. 80. St. Mary's City, Md. 36. Claiborne, Md. 81. Point No Point, Md. 37. St. Michaels, Md. 82. Richland Point, Md. 38. Easton, Md. 83. Bloodsworth Island, Md. 39. Fort Belvoir, Va.-Md. 84. Deal Island, Md. 40. Mt. Vernon, Md.-Va. 85. Monie, Md. 41. Lower Marlboro, Md. 86. Champlain, Va. 42. North Beach, Md. 87. Machodoc, Va. 43. Tilghman, Md. 88. Kinsale, Va.-Md. 44. Oxford, Md. 89. St. George Island, Va.-Md. 45. Trappe, Md. 90. Point Lookout, Md. TABLE 2. (continued) 91. Kedges Straits, Md. 134. Cheriton, Va. 0 92. Terrapin Sand Point, Md. 135. Savedge, Va. 93. Marion, Md. 136. Claremont, Va. 94. Mount Landing, Va. 137. Surry, Va. 95. Tappahannock, Va. 138. Hog Island, Va. 96. Lottsburg, Va. 139. Yorktown, Va. 97. Heathsville, Va.-Md. 140. Poquoson West, Va. 0 98. Burgess, Va.-Md. 141. Poquoson East, Va. 99. Ewell, Va.-Md. 142. Elliotts Creek, Va. 100. Great Fox Island, Va.-Md. 143. Townsend, Va. 101. Crisfield, Va.-Md. 144. Bacons Castle, Va. 102. Saxis, Va.-Md. 145. Mulberry Island, Va. 103. Dunnsville, Va. 146. Newport News North, Va. 104. Morattico, Va. 147. Hampton, Va. 105. Lively, Va. 148. Benns Church, Va. 106. Reedville, Va. 149. Newport News South, Va. 107. Tangier Island, Va-. 150. Norfolk North, Va. 108. Chesconessex, Va. 151. Little Creek, Va. 109. Parksley, Va. 152. Cape Henry, Va. 110. Urbanna, Va. 153. Chuckatuck, Va. 111. Irvington, Va. 154. Bowers Hill, Va. 112. Fleets Bay, Va. 155. Norfolk South, Va. 113. Nandua Creek 156. Kempsville, Va. 114. Pungoteague, Va. 157. Princess Anne, Va. 115. West Point, Va. 158. Wye Mills, Md. 116. Saluda, Va. 159. Bristol, Md. 117. Wilton, Va. 160. Fowling Creek, Md. 118. Deltaville, Va. 161. Port Tobacco, Md. 119. Jamesville, Va. 162. Charlotte Hall, Md. 120. Toano, Va. 163. Mardela Springs, Md. 121. Gressitt, Va. 164. Wetipquin, Md. 122. Ware Neck, Va. 165. Selbyville, Md. 123. Mathews, Va. 166. Assawoman Bay, Md. 124. Franktown, Va. 167. Berlin, Md 125. Westover, Va. 168. Ocean City, Md. 126. Charles City, Va. 169. Public Landing, Md. 127. Brandon, Va. 170. Tingles Island, Md. 128. Norge, Va. 171. Girdle Tree, Md.-Va. 129. Williamsburg, Va. 172. Boxiron, Md.-Va. 130. Clay Bank, Va. 173. Whittington Point, Md.-Ifa. 131. Achilles, Va. 174. Chincoteague West, Va. 132. New Point Comfort, Va. 175. Chincoteague East, Va. 133. Cape Charles, Va. 10 1:12,000 for the Potomac River) were used as base maps in the mapping process. Delineation of SAV bed boundaries was facilitated by superimposing on a light table the appropriate mylar quadrangle with the transparent photograph. SAV boundaries were delineated on the mylar map with a pencil. Where minor scale differences were evident between the photograph and quadrangle or where significant shoreline erosion'or accretion had occurred since production of the map, a best fit was obtained, or shoreline changes were noted on the quadrangle. Areas of SAV beds were derived from the topographic quadrangles. VIMS measurements for the lower bay were made on a Numonics Model 2200 DigiTablet Graphics Analysis System. Coordinates were transmitted to a PRIME 9955 computer for area calculations and data manipulation via software developed at VIMS. EPIC utilized a Calma Graphic Interactive Image Analysis System based on a Data General Eclipse S230 minicomputer for upper bay areas. Each SAV bed was digitized three times and the area reported as the average of the three. Each of the three measurements was generally within 5% of the mean. In addition to the boundarieslof the SAV bed, an estimate of percent cover within each bed was made visually in comparison with an enlarged Crown Density Scale, similar to those developed for estimating of forest tree crown cover from aerial photography (Fig. 2). Bed density was classified into one of four categories based on a subjective comparison with the density scale. These were: 1. very sparse, <10%, 2. sparse, 10 to 40%; 3. moderate, 40 to 70%; or 4. dense, 70-100%. Either the entire bed, or sub- sections within the bed, were assigned a number (1 to 4) corresponding to the above density categories. In addition to the density scale, each distinct SAV unit was given a letter designation for proper identification for future comparisons. 10-40 40-70 70-100 PuFwi L* 28 A 0 131" 15 25 35 45 55 65 75 85 95 PERCENT CROWN COVER Figure 2. Crown density scale used for determining density of SAV beds: very sparse (1), 0-10%; sparse (2), 10-40%; moderate (3), 40-70%; dense (4), 70-100%. (I ti 96 In order to reduce interobserver variability in both the mapping and digitizing processes, steps were taken to ensure quality assurance. Sections from several areas in both Maryland and Virginia containing SAV were independently mapped and assigned a density classification. Results were compared for compatibility of the mapping efforts. In addition, mapped sections were independently digitized for similar comparisons. The discussion of the distribution of SAV in the Chesapeake Bay and tributaries has been organized into three zones as established by Orth and Moore (1982). The area between the mouth of the bay to a line stretching from the mouth of the Potomac River at Smith Point in Virginia to just above Smith Island and extending across to the north shore at the mouth of the Big Annemessex River is referred to as the Lower Bay zone (Fig. 3). The area between the north shore of the Big Annemessex River and the south shore of the Potomac River to the Chesapeake Bay bridge at Kent Island is referred to as the Middle Bay zone. The area between the Chesapeake Bay bridge and the Susquehanna Flats is referred to as the Upper Bay zone. The salinity within each zone roughly coincides with the major salinity zones of estuaries: polyhaline (18-250/oo), Lower zone; mesohaline (5-180/oo), Middle zone; oligohaline (0.5-50/oo), Upper zone. Although the major rivers and smaller tributaries of the bay have their own salinity regimes, the distributions of SAV in each river are discussed within the zone where it connects to the bay proper. In addition, 21 major sections of the bay are identified for more detailed discussion of SAV distribution (Fig. 3, Table 3). These sections denote relatively distinct parts of the bay that are readily identifiable from a map. Sections 1 through 4 are located in the Upper Bay zone. 13 770100' SUSQUEMAPIA4 R. KILO@FETEAI r 0 W 20 30 40 NALTIMO """SSAFRAS UJ a- a- CMESTr# 10WHINGTO 590 a C. 00 Wff 19. 9" LLJ 8 -J CANP MID C'00 '0)'0MAC BLOODS NTH A""'OgIftl Soo Sul 00 MIT TH 4- TABR CAPamn,re C'. f. sty WINDMILL ft'"I PT 7S W EW POINT COMPORT 16ak ELLI 0 P CR '370 cop. ""'Y 00, Figure 3. Location of upper, middle and lower zones of the Chesapeake Bay and the 21 major sections used for delineation of SAV distribution patterns (see Table 3 and text for exact boundaries. Stars in Lower Bay zone indicate areas where SAV has been mapped since 1937). 14 TABLE 3. AREA DESCRIPTION FOR EACH OF 21 MAJOR SECTIONS IN THE CHESAPEAKE BAY HAVING SAV. Section 1. Susquehanna Flats - all areas between and including Spesutie Island and Turkey Point at the mouth of the Elk River to include the Northeast River. Section 2. Upper Eastern Shore - all areas in the Elk, Bohemia and Sassafras Rivers and SAV in areas on the eastern shore above the Swan Point quadrangle. Section 3. Upper Western Shore - all areas south of Spesutie Island and north of the bay bridge to include the Bush, Gunpowder, Middle, Patapsco and Magothy Rivers. Section 4. Chester River - includes all of the Chester River, Eastern Neck, areas north of the bay bridge on Kent Island and south of Swan Point but to include SAV on the Swan Pt. quadrangle. Section 5. Central Western Shore - all areas south of the bay bridge and north of Holland Point on Herring Bay to include the Severn, South and West Rivers and Herring Bay. Section 6. Eastern Bay - all areas south of the bay bridge on Kent Island and north of Tilghman Island from Green Marsh Point to include the Wye, East and Miles Rivers, Crab Alley Bay, Prospect Bay and Poplar, Jefferson and Coaches Islands. Section 7. Choptank River - all areas south of Tilghman Island from Green Marsh Point and north of Taylor Island to include the Choptank and Little Rivers. Section 8. Patuxent River - all areas in the Patuxent River. Section 9. Middle Western Shore - all areas south of Holland Point at Herring Bay and north of Point Lookout on the Potomac River but not the mouth of the Patuxent River. Section 10. Lower Potomac River - all areas between the mouth of the Potomac River to a line extending from Maryland Point on the north shore, just above Nanjemoy Creek, to Somersett Beach on the south shore. Section 11. Upper Potomac River - all areas from upriver limit of the Lower Potomac River Section to Chain Bridge at Washington D.C. Section 12. Middle Eastern Shore - all areas south of Taylor Island and north of but not including the Big Annemessex River to include the Honga, Nanticoke, Wicomico and Manokin Rivers, Fishing Bay, Bloodsworth and South Marsh Islands. continued .15 TABLE 3. (continued) Section 13. Tangier Island Complex - all areas south of and including the Big Annemessex River and north of but including the northern shore of Chesconessex Creek to include Smith and Tangier Islands, Little Anemessex River and Pocomoke Sound. Section 14. Lower Eastern Shore - all areas south of but including the southern shore of Chesconessex Creek and north of Elliotts Creek to include Cherrystone Inlet, Hungars, Nassawadox, Occohannock, Nandua, Pungoteague and Onancock Creeks. Section 15. Reedville - includes the area between Windmill Point on the Rappahannock River and Smith Point at the mouth of the Potomac River. Section 16. Rappahannock River Complex - includes the entire Rappahannock River, Piankatank River and Milford Haven area. Section 17. New Point Comfort Region - includes the area fronting the bay from the lighthouse at New Point Comfort north to, but not including, the bay entrance to Milford Haven. Section 18. Mobjack Bay Complex - includes the East, North, Ware and Severn Rivers, the north shore of the Mobjack Bay from New Pt. Comfort lighthouse to the North River, and the area around Guinea Neck to include all the SAV around the Guinea Marsh area from the New Point Comfort quadrangle. Section 19. York River - all areas along the north shore from Clay Bank to the Guinea Marsh area and includes SAV from the Achilles quadrangle facing the York River and along the south shore to Goodwin Isla.nd. Section 20. Lower Western Shore - includes all areas south of Goodwin Island to Broad Bay off Lynnhaven Inlet, excluding the James River. Section 21. James River all SAV in the James River including the Chickahominy River. z 16 Sections 5 through 12 are located in the Middle Bay zone, and sections 13 through 21 are located in the Lower Bay zone. Orth et al. (1979) chose six sites in the Lower Bay zone to determine changes in SAV distribution starting in 1937. These sites are: Mumfort Island and Jenkins Neck in the York River; East River in the Mobjack Bay; Parrott Island in the Rappahannock River; Fleets Bay located between Windmill Point on the Rappahannock River and Smith Point on the Potomac River; and Vaucluse Shores, located on the bayside of the eastern shore just above Cape Charles (see Orth et al. (1979) for further details of these historical sites). Detailed mapping of each historical site was completed in this study similar to the earlier work to provide a 1986 update. SAV distribution in-Chincoteague Bay is presented and discussed as a separate section. SAV abundance here may be affected by a different set of parameters and changes occurring in this system may be unrelated to changes in the Chesapeake Bay SAV beds. It is the only bay in the Delaware, Maryland and Virginia barrier island system that presently has SAV. Ground Truth and Other Data Bases For those areas in Virginia where aerial photographic evidence of SAV beds was inconclusive, photo-verification was accomplished by ground truthing these sites. This was done principally by observations made from small boats and divers snorkeling over areas indicated from the photograph. Since SAV beds in this region contain primarily only one or two species and have not undergone drastic fluctuations since the first baywide survey in 1978, a great deal of ground truth information could be extrapolated from earlier studies (Orth et al., 1979; Orth and Moore, 1982). In addition, 17 VIMS is currently transplanting SAV (principally eelgrass) into several river systems included in this survey (York, Piankatank and Rappahannock rivers). These areas are checked carefully for any SAV when transplant sites are examined by divers. SAV surveys in Chincoteague Bay were checked against the aerial photographic information. Presence-absence data were collected from multiple sites where SAV was known to occur. In Maryland, ground truth data were provided principally from two SAV surveys conducted in 1986, from two SAV research and transplanting projects, and the Citizen and Charterboat Captain volunteer surveys. One field survey was conducted in the Potomac River by the USGS (Rybicki et al., 1,987) and included the area from the Chain Bridge at Washington, D.C. to the mouth of the Potomac River (Figs. 4, 5 and 6). The 1986 USGS objectives were: 1. to collect and identify all species of SAV found in the tidal river and larger tributaries, 2. to determine the distribution and abundance of SAV using shoreline surveys and transects, 3. to compare 1986 data on species composition, standing crop and water quality with previous USGS surveys, and 4. to monitor the spread of H. verticillata. The USGS shoreline survey was conducted in September and October, 1986, by boat, using rakes to collect samples to determine the presence or absence of SAV on both shorelines between Washington, D.C. and the 301 bridge. In addition, 186 transects from the 1978-81 surveys by the U.S.G.S. (Carter, et al., 1985) were resampled. The tidal river (Washington, D.C., to Quantico, VA) and transition zone of the estuary (Quantico, VA, to the 301 bridge) transects (Figs. 4 and 5) were sampled in June and again in September. The estuary (Rt. 301 bridge to the mouth) was sampled in July (Fig. 6). Transects had sampling stations at 5 m, 15 m and then at 15 m intervals 18 39* 77*15' 77* Washington, D.C. Rl-01R WC-01IR NA-02R Run BB-01R OR-01R MARYLAND AD-01R --Woodrow Wilson Bridge DM-01R Dyke PY-01R VIRGINIA marsh---- DM-028 PY-02R 38*45'- Lit9k Hosting DM-03R PY-03R DM-04R X PY-04R GC-04R GC-02R GC-01R.,i:: PY-05R GC-03R 1 GC@OC45- PY-01T-1 GC-01T-2 PY-02T-1 10 %0 GC-01T-3 '01 GC-06R 0ftk arshall PM-01 M Hall P -02R M PM-03R -04R 0 io MILES 0 5 10 KILOMETERS Ouanti Figure 4. Location of vegetation sampling transects in the tidal Potomac River above Mattawoman Creek. Codes for transects give location ahd tributary or river-mile for each location. RI is Roosevelt Island, NA is National Airport, OR is Oronoco Bay, AD is Alexandria Dock, DM is the Dyke Marsh region, GC is the Gunston Cove region, BB is Bolling Air Force Base, PY is the Piscataway Creek region, PM is the Pomonkey Creek region. 19 77' HW" N A Indian Head k 44 po"M Pt V 10 V MARYLAND Abqp., W"M ro jT3 MP421 *AO, ?O.IT.3 P0,11.2 14 T-1 A to.) A"21T.1 SP-039 #r Atzf #,ro Jr.- A0-0JT.Z V.I)R .0113 NP-In my A043 7.1 451 ith Pt AP 4 '@!@ 51 AQ,OZt A NP.14R A A041T.2 9k t Pt NP-159 A w marieland Pt . ...... . .. VER W* k'1019xtown 0", 19 . .. ..... VIRGINIA hoo 0 10 MILES 0 5 10 KILOMETERS Figure 5. Location of vegetation sampling transects from Mattawoman Creek to Port Tobacco River, Codes for transects give location and tributary or river-mile for each location. MN is the Mattawoman Creek region, MP is the Maryland Point region, NP is the Nanjemoy Creek-Port Tobacco River region, PO is the Port Tobacco River region, AQ is the Aquia Creek region, PC is the Potomac Greek region, AP is the Aquia Creek-Potomac Creek region. 20 77- 76*45' 76-30' 76-15' Pt WICONICO Morgantown Lower D Cedar Pt ST-1 MARYLAN ST-1 4T-2 4T-1 37 1 3TJ 3 4 Leonardtown 20" :T-2 N* IT-2 Colon, Cobb Is Beac,h 38-15, -;@, NVO 9R @St Clerrients Is V POTQkAC IRr I Marys City Nomini 4T4 3T4 Bay Ragged Pt .3 ine 2T 11.2 P. I St Georges Sandy Point OIL lot VIR GINIA j"CO Point Lookout 38- 0 5 10 15 MILES i I I . I I 0 5 10 15 KILOMETERS Smith Point Figure 6. Location of vegetation sampling transects from the Wicomico River to St. Mary's River. WO is the Wicomico River region; SM is the St. Mary's River region. 21 perpendicular to shore. Transects were terminated at five stations (60 m) from shore when no SAV was present or at two stations (30 m) beyond the last vegetated station. Where water depth exceeded 2.0 m at 60 M Of linear distance, the fixed interval was not used, and samples were taken at four stations along the transect corresponding with the depths of 0.5, 1.0, 1.5 and 2.0 m (see Rybicki, et al., 1987, for detailed smapling methods). Codes for the transects in Figs. 4, 5 and 6 provide information on location and the river - or tributary - mile for each location. For example, in MN-01T-2, MN is Mattawoman Creek (Fig. 5), OIT is one nmi (nautical mile) up the tributary from the mouth, -2 is the second transect; in PY-06R, PY is Piscataway Creek (Fig. 4), 06R is the sixth transect on the edge of the main river. All stations were sampled three times using modified oyster tongs. The 2 area sampled with each grab was 930 cm All species were identified. 2 Samples were dried and standing crop expressed in g/sample and g/m for each species. In the fall, because of increased biomass (- 1000 g/m 2) sampling methods were altered to minimize time and labor. At stations where SAV formed a dense, tangled mass, visual estimates of the percent of each species in each grab were recorded, but the vegetation was not collected and weighed. A second survey is the annual, large scale, multi-stati,Dn survey conducted by the Md.DNR. This survey, conducted from July through August, samples 600+ randomly selected stations in certain areas of the bay from the Susquehanna Flats to Smith Island. At each station, samples are also collected with modified oyster tongs and species presence or absence, as well as standi'ng crop, is recorded. Station locations were randomly 22 generated and were limited to areas 2.4 m (8 ft) or less in depth on the western shore of the bay and 3.7 m (12 ft) or less on the eastern shore. One SAV transplanting project is being conducted on the Susquehanna Flats by Stan Kollar of HCC. Information provided by his work is in the form of species presence by percentage, primarily by visual estimates. A SAV research group at HPL headed by Court Stevenson also provided ground truth data. Maps of their study sites on the Choptank River were annotated on the maps for this report indicating the status of SAV for 1986. In addition to the scientific surveys, private citizens participated in identifying SAV beds by checking areas in the bay for SAV. Two groups were responsible for looking for SAV under the sponsorship of separate organizations. The Maryland Charterboat Association participated in the baywide effort, funded by the Md.DNR's Watermen's Assistance Program. Boat captains were provided with reduced SAV quadrangle maps to aid in location of SAV beds and data sheets on which to record information on each SAV bed identified. Sampling of sites with SAV were undertaken at low tide. Samples were taken by hand, net or rake. Plants were identified as to species onsite or placed in zip-lock plastic bags and sent to the DNR for identification. Private citizens volunteered to assist in the SAV ground survey under guidance of the CBF, CPCB and F&WS. This program entailed identifying and recording the location of SAV in the bay. Volunteers were recruited through press releases, newsletters and personal letters. Volunteers, provided with an identification guide of SAV, reduced 1986 SAV maps, and data sheets, visited numerous sites around the bay. Each volunteer was asked to identify the location where SAV was sighted, as well as water conditions, 23 how many and which kind of species, grass bed size, percentage area covered, and location description. All information from the Charterboat Captain and Citizen Surveys was sent.to EPIC for processing. All ground survey information was included on the topographic quadrangles to show positions of the survey stations in relation to the beds of SAV mapped from the aerial photographs. Each survey was designated by a unique symbol to eliminate confusion of the different methods. In most cases, the symbols on the SAV maps (Appendix C) have been enlarged and offset from the actual sampling point to avoid confusion with the mapped SAV bed. Where species information was available, it was included oil the map unless it was redundant. Data Presentation SAV distribution data were analyzed by topographic quadrangle (Table 4), by section and zone (Table 5) and by quadrangles within a section (Table 6). Data for 1978, 1984 and 1985 by quadrangle, section and zone were included in Tables 4 and 5 for comparison. In addition, all the Md.DNR data for each river system from the first annual survey conducted in '1971 are included (Table 7). 24 @_l I @ t I 1 0 - I I I ) 44 9 a W TABLE 4. TOTAL AREA OF SAV IN HECTARES BY TOPOGRAPHIC QUADRANGLES FOR 1978, 1984, 1985 AND 1986. QUANDRANGLE 1978 1984 1985 1986 1. Conowingo Dam, Md.-Pa. - - 0 0 2. Aberdeen, Md. - 0 6.34 5.77 3. Havre de Grace, Md. 803.67 1741.85 1605.81 1977.42 4. North East, Md. 5.62 13.31 29.46 6.95 5. Elkton, Md. 0.75 0 0 0 6. White Marsh, Md. - 0 0 0 7. Edgewood, Md. 10.48 49.81+ 6.31 ... 8. Perryman, Md. - 2.01 4.64 0 9. Spesutie, Md. 0.84 411.38 439.96 369-54 10. Earleville, Md. 4.67 3.47 11.60 9.72 11. Cecilton, Md. - 0 0 0 12. Baltimore East, Md. - 0 0 0 13. Middle River, Md. 90.06 0 74.80 ... 14. Gunpowder Neck, Md. 200.71 183.99+ 132.99 ... 15. Hanesville, Md. 9.31 5.48 10.10 7.70 16. Betterton, Md. 6.40 5.74 12.89 8.40 17. Galena, Md. 1.46 11.88 0.61 10.91 18. Curtis Bay, Md. 33.40 0 0 0 19. Sparrows Pt., Md. 10.52 0 5.56 0 20. Swan Point, Md. 29.86 18.65 10.25 3.33 21. Rock Hall, Md. 127.25 30.13 14.71 5.97 22. Chestertown, Md. 12.31 0 1.92 0 23. Round Bay, Md. 137.15 0 0 0 24. Gibson Island, Md. 139.45 7.61 16.07 4.09 25. Love Point, Md. 11.81 0 3.94 0 26. Langford Creek, Md. 1255.20 599.72 586.06 294.89 27. Centreville, Md. 38.75 0 0 0.52 28. Washington West, Md.-DC-Va. - 0++ 0 0 -29. Washington East, DC-Md. - 0 0 0 30. South River, Md. 15.14 0 0 0 31. Annapolis, Md. 27.15 0 0.28 0.12 32. Kent Island, Md. 513.68 26.28 48.36 30.80 33. Queenstown, Md 492.10 89.45 97.9 36.57 34. Alexandria, Va:_DC-Md. - 160.40 512.70 495.80 35. Deale, Md. 61.51 0 2.43 0.57 TABLE 4. (continued) 36. Claiborne, Md. 421.08 52.25 346.69 165.06 37. St. Michaels, Md. 366.09 11.14 223.91 64.03 38. Easton, Md. 1.19 0 14.33 0 39. Fort Belvoir, Va.-Md. - 0.91 1.73 7.16 40. Mt. Vernon, Md.-Va. - 420.34 857.81 1080.23 41. Lower Marlboro, Md. - 0 0 0 42. North Beach, Md. - 0 18.88 0 43. Tilghman, Md. 478.15 6.87 253.74 37.48 44. Oxford, Md. 562.96 23.25 329.10 51.91 45. Trappe, Md. 64.75 0 33.16 0 46. Preston, Md. - 0 0 0 47. Quantico, Va.-Md. 0 6.67 19.23 48. Indian Head, Va.-Md. - 0++ 0.21 7.51 49. Benedict, Md. 1.58 0 0 4.23 50. Prince Frederick, Md. - 0 0 0 51. Sharps Island, Md. 377.08 4.42 229-75 193.59 52. Church Creek, Md. 208.94 9.00 322.63 141.52 53. Cambridge, Md. 48.96 0 0 0 54. East New Market, Md. - 0 0.75 0 55. Widewater, Va.-Md. - 4.59 38.21 39.36 56. Nanjemoy, Md. 28.03 30.92 106.68 102.74 57. Mathias Pt., Md.-Va. 194.12 121.11 228.66 210.70 58. Popes Creek, Md. - 0 0 0 59. Mechanicsville, Md. 13.62 0 0 7.59 60. Broomes Island, Md. 4.94 4.37 24-71 4.14 61. Cove Pt., Md. 2.97 3.75 2.46 0.74 62. Taylors Island, Md. - 8.55 47-53 12.38 63. Golden Hill, Md. 0.42 10.90 1.07 64. Passapatanzy, Md.-Va. - 0 0 0 65. King George, Va.-Md. 2.25 13.44 22.15 22.95 66. Dahlgren, Va.-Md. 8.32 2.67 1.97 2.41 67. Colonial Beach North, Md.-Va. 87.44 25.63 15.66 18.42 68. Rock Pt., Md. 22.85 0 0.27 0 69. Leonardtown, 14d. 2.44 0 0 0 70. Hollywood, Md. - 0 0 1.33 71. Solomons Island, Md. 10.54 0.76 15.52 2.63 72. Barren Island, Md. - 0 264.99 177.17 73. Honga, Md. 126.94 5.05 178.58 194.48 74. Wingate, Md. 2.64 8.81 97-99 90.83 41 0 V TABLE 4. (continued) 75. Nanticoke, Md. - 0 0 0 76. Colonial Beach South, Va.-Md. 61.95 11.26 0 0 77. Stratford Hall, Va.-Md. 5.53 2.16 0 0 78. St. Clements Island, Va.-Md. 0.13 0 0 0 79. Piney Point, Md.-Va. - - 0.51 1.51 80. St. Marys City, Md. 19.01 16.66 81. Point No Point, Md. - - 16.50 0 82. Richland Pt., Md. 0.73 0.38 24.28 3.76 83. Bloodsworth Island, Md. 66.07 18.29 285.53 385.28 84. Deal Island, Md. 3.01 0 16.65 60.48 85. Monie, Md. 9.15 0 1.93 18.69 86. Champlain, Va. - - 0 - 87. Machodoc, Va. - - 0 0 88. Kinsale, Va.-Md. - - 0 0 89. St. George Island, Va.-Md. - - 8.82 6.91 90. Point Lookout, Md. - - 5.76 0.58 91. Kedges Straits, Md. 156.09 366.42 474.91 637.99 92. Terrapin Sand Point, Md. 314.48 187-00 180.48 209.35 93. Marion, Md. 289.33 0 200.29 243.13 94. Mount Landing, Va. - - - - 95. Tappahannock, Va. - - - - 96. Lottsburg, Va. - - - 0 97. Heathsville, Va.-Md. - - - 0 98. Burgess, Va.-Md. - - - 0 99. Ewell, Va.-Md. 1483.30 2308.58 2129.67 2324.36 100. Great Fox Island, Va.-Md. 540.65 807.81 1074.25 1362.12 101. Crisfield, Va.-Md. 7.48 113.01 79.22 180.46 102. Saxis, Va.-Md. - - - - 103. Dunnsville, Va. - - - - 104. Morattico, Va. - - 0 - 105. Lively, Va. - - 0 - 106. Reedville, Va. 230.40 108.56 51.17 71.28 107. Tangier Island, Va. 405.06 614.44 613.55 651.89 108. Chesconessex, Va. 482.54 808.61 827.28 920.15 109. Parksley, Va. 80.35 264.80 241.16 318.28 110. Urbanna, Va. - - - - TABLE 4. (continued) 111. Irvington, Va. 5.31 9.33 8.26 7.50 112. Fleets Bay, Va. 133.23 155.45 120.91 132.88 113. Nandua Creek, Va. 184.86 345.10 350.51 375-97 114. Pungoteague, Va. 401.63 716.76 691.94 706.23 115. West Point, Va. - - - - 116. Saluda, Va. - - - 117. Wilton, Va. 10.43 0 0 - 118. Deltaville, Va. 59.43 6.62 0.70 0.52 119. Jamesville, Va. 406.04 367.36 327.20 404.46 120. Toano, Va. - - - - 121. Gressitt, Va. - - - - 122. Ware Neck, Va. 256.00 203-15 171.91 168.59 123. Mathews, Va. 63.88 30.32 37.39 37.03 124. Franktown, Va. 504.49 395.26 419.66 441.77 125. Westover, Va. - - - - 126. Charles City, Va. 00 127. Brandon, Va. - 128. Norge, Va. 46.48 46.48** 46.48** 13.66 129. Williamsburg, Va. - - 130. Clay Bank, Va. - - - - 131. Achilles, Va. 797.92 741.50 710.16 702.91 132. New Point Comfort, Va. 1096.31 1092.71 1154.55 1155-33 133. Cape Charles, Va. 321.42 308.32 329.48 255.33 134. Cheriton, Va. 85.20 55.99 63.58 72-74 135. Savedge, Va. - - - - 136. Claremont, Va. - - - - 137. Surry, Va. - - - - 138. Hog Island, Va. - - - - 139. Yorktown, Va. 1.92 0.23 0.21 0.28 140. Poquoson West, Va. 210.44 216.93 237.70 235.96 141- P oU n- n T-P a -,- t iVa- 516.63 687.16 784.53 762.30 142. Elliots Creek, Va. 44.58 14.48 8.41 19.91 143. Townsend, Va. 42.70 4.80 17.72 14.42 144. Bacons Castle, Va. - - - - 145. Mulberry Island, Va. TABLE 4. (continued) 146. Newport News North, Va. - 147. Hampton, Va. 218.25 233.15 287.10 270.40 148. Benns Church, Va. - - - - 149. Newport News South, Va. 1.87 0 0 150. Norfolk North, Va. - - - 151. Little Creek, Va. 0 0 - 152. Cape Henry, Va. 37.87 36.76 43.31 153. Chuckatuck, Va. - - - - 154. Bowers Hill, Va. - - - - 155. Norfolk South, Va. - - - - 156. Kempsville, Va. - - - - 157. Princess Anne, Va. - - - - 158. Wye Hills, Md. - - 1.10 - 159. Bristol, Md. - - 2.08 0 160. Fowling Creek, Md. - - 0 0 161. Port Tobacco, Md. - - 0 1.10 162. Charlotte Hall, Md. - - 0 0 163. Mardela Springs, Md. - - 0 0 164. Wetipquin, Md. - - 0 0 165. Selbville, Md. - - - - 166. Assawoman Bay, Md. - - - - 167. Berlin, Md. - - - - 168. Ocean City, Md. - - - - 169. Public Landing, Md . - - - - 170. Tingles Island, Md. - - - 852.47 171. Girdle Tree, Md.-Va. - - - - 172. Boxiron, Md.-Va. - - - 687.95 173. Whittington Point, Md.-Va. - - - 189.94 174. Chincoteague West, Va. - - - 0 175. Chincoteague East, Va. - - - 0 403.57 TOTAL SAV - Chesapeake Bay 16,622.40 15,399.70 19,390.64 19,165.44 'TOTAL-SAY - Chincoteague Bay 2,133.93 NOTES: - indicates quadrangle not photographed and assumed to have no SAV 0 indicates quadrangle photographed and no SAV noted * area not flown in 1978 but most likely had SAV in 1978 based on data collected in subsequent years TABLE 4. (continued) NOTES: (continued) Area not photographed in 1984. Area known to still have SAV. We made the assumption that the 1984 distribution would be similar to the 1978 distribution. + Information on SAV distribution taken from 1983 aerial photographs provided by Willie Burton of Martin Marietta Corp. ++ Presence of SAV beds not detected from 1984 aerial photography. Information provided by Virginia Carter of the USGS for the 1984 Potomac River Shoreline Survey indicated presence of SAV. ... Aerial photography unavailable in 1986, therefore, SAV acreage data not collected. SAV presence verified by ground truth surveys. See discussion of Section 2, Upper Eastern Shore, and Section 3, Upper Western Shore, in Results, and maps in APPENDIX C. .... Aerial photography unavailable in 1986, therefore, SAV acreage data not collected. SAV presence verified by ground truth surveys. See discussion of Section 21, James River, in Results. W TABLE 5. NUMBERS OF HECTARES OF BOTTOM COVERED WITH SUBMERGED AQUATIC VEGETATION IN 1978, 1984, 1985 AND 1986 FOR DIFFERENT SECTIONS WITHIN THE THREE ZONES IN THE CHESAPEAKE BAY (DATA FOR 1978 FROM ORTH et al. 1979, AND ANDERSON AND MACOMBER 1980. DATA FOR 1984 AND 1985 FROM ORTH ET AL. 1985, 1986, RESPECTIVELY). Zone Section 1978 1984 1985 1986 1. Susquehanna Flats 804* 2,150 2,011 2,339 Upper 2. Upper Eastern Shore 29 43 105 58... 3. Upper Western Shore 484 244 239 4++ 4. Chester River 1,475 -7,U -ka 341 TOTAL 2,792 3,168 3,025 2,742 --------------------------------------------------------------------------------------------------- 5. Central Western Shore 241 0 26 1 6. Eastern Bay 1,800 66 356 244 7. Choptank River 1,740 82 1,528 452 Middle 8. Patuxent River 34 9 44 19 9. Middle Western Shore 11 0 23 6 10. Lower Potomac River 410 194 381 356 11. Upper Potomac River 0** 600 1,439 1,673 12. Middle Eastern Shore 210 33 1,188 1,337 Total 4,446 984 4,986 4,088 --------------------------------------------------------------------------------------------------- 13. Tangier Island Complex 3,759 5,447 5,504 6,423 14. Lower Eastern Shore 1,991 2,232 2,227 2,310 15. Reedville 364 264 172 204 Lower 16. Rappahannock River Complex 93 23 20 18 17. New Point Comfort Region 271 299 332 324 18. Mobjack Bay Complex 1,785 1,550 1,505 1,505 19. York River 157 238 258 257 20. Lower Western Shore 925 1,149 1,315 1,281 21. James River 54 46 46 ---IA+ Total 9,399 11,248 11,379 12,336 TOTAL SAV FOR BAY 16,637 15,400 19,390 19,166 TABLE 5. (continued) NOTES: *1978 data for Susquehanna Flats remapped and digitized to allow for greater compatability to 1984 data. **No aerial photography was taken of this area in 1978; the absence of SAV is based on ground survey observations by the USGS. +Aerial photography unavailable for 1986 for Brandon quadrangle, therefore, hectares presented for 1986 represent only a portion of Section 21. SAV presence in quadrangle verified by ground truth surveys. See discussion of James River in Results. ++Aerial photography unavailable for 1986 for three quadrangles, therefore, hectares presented for 1986 represent only a portion of Section 3. See discussion of Upper Western Shore in Results, and maps in APPENDIX C. SAV presence in quadrangles not photographed was verified by ground truth surveys. ... Aerial photography unavailable for 1986 for one quadrangle, therefore, hectares presented for 1986 represent only a portion of Section 2. See discussion of Upper Eastern Shore in Results, and maps in APPENDIX C. SAV presence in quadrangle not photographed was verified by ground truth surveys. 41 eg 1 41 TABLE 6. NUMBER OF SQUARE METERS OF SAV IN EACH QUADRANGLE CONTAINED WITHIN THE 21 SECTIONS FOR THE CHESAPEAKE BAY 1986 AND CHINCOTEAGUE BAY. MAP CODE NUMBER FROM TABLE 2 IN PARENTHESIS. SECTION QUADRANGLE AREA Susquehanna Flats - 1 Conowingo Dam (1) 0 Aberdeen (2) 57,659 Havre de Grace (3) 19,774,206 North East (4) 19,469 Perryman (8) 0 Spesutie (9) 3,539,915 23,391,249 sq.m 2,339.12 hectares 5,780.07 acres Upper Eastern Shore 2 North East (4) 50,069 Elkton (5) 0 Perryman (8) 0 Spesutie (9) 155,534 Earleville (10) 97,230 Cecilton (11) 0 Gunpowder Neck (14) Hanesville (15) 77,033 Betterton (16) 83,966 Galena (17) 109,140 Swan Point (20) 0 Rock Hall (21) 5,575 578,547 sq.m 57.85 hectares 142.95 acres" Upper Western Shore 3 White Marsh (6) 0 Edgewood (7) Perryman (8) 0 Spesutie (9) 0 Baltimore East (12) 0 Middle River (13) Gunpowder Neck (14) Hanesville (15) 0 Curtis Bay (18) 0 Sparrows Point (19) 0 Round Bay (23) 0 Gibson Island (24) 40,928 40,928 sq.m 4.0 hectares 10.11 acres" continued 33 TABLE 6. (continued) Chester River 4 Swan Point (20) 33,330 40 Rock Hall (21) 54,148 Chestertown (22) 0 Love Point (25) 0 Langford Creek 26) 2,948,925 Centreville (27@ 5,234 Kent Island (32) 55,050 Queenstown (33) 311,682 Wye Mills (158) 0 3,408,369 sq.m 340.84 hectares 842.23 acres 41 Central Western Shore 5 Round Bay (23) 0 Gibson Island (24) 0 South River (30) 0 Annapolis (31) 1,181 Deale (35) 5,680 North Beach (42) 0 6,861 sq.m 0.69 hectares 1.71 acres Eastern Bay 6 Love Point (25) 0 Annapolis (31) 0 Kent Island (32) 252,931 Queenstown (33) 54,046 Claiborne (36) 1,507,277 St. Michaels (37) 630,072 Easton (38) 0 2,444,326 sq.m 244.43 hectares 604.00 acres Choptank River 7 Claiborne (36) 143,330 St. Michaels (37) 10,236 Easton (38) 0 Tilghman (43) 374,776 Oxford (44) 519,0169 Trappe (45) 0 Preston (46) 0 Sharps Island (51) 1,935,923 Church Creek (52) 1,415,180 Cambridge (53) 0 East New Market (54) 0 Taylors Island (62) 123,849 Fowling Creek (160) 0 4,522,363 sq.m 452.24 hectares 1,117.50 acres 34 TABLE 6. (continued) Patuxent River 8 Lower Marlboro (41) 0 Benedict (49) 42,345 Mechanicsville 59) 75,895 Broomes Island RO) 41,404 Cove Point (61) 0 Hollywood (70) 13,302 Solomons Island (71) 20,983 Bristol (159) 0 193,929 sq.m 19.39 hectares 47.91 acres Middle Western Shore 9 North Beach (42) 0 Prince Frederick (50) 0 Broomes Island (60) 0 Cove Point (61) 7,370 Solomons Island (71) 5,332 St. Marys City (80 40,372 Point No Point (811 0 Point Lookout (90) 5,786 58,860 sq.m 5.89 hectares 14.55 acres Lower Potomac River 10 Nanjemoy (56) 1,027,402 Mathias Point (57) 2,107,016 Popes Creek (58) 0 Dahlgren (66) 24,120 Colonial Beach North (67) 184,220 Rock Point (68) 0 Leonardtown (69) 0 Colonial Beach South (76) 0 Stratford Hall (77) 0 St. Clements Island (78 0 Piney Point @79) 15,096 St. Marys City (80) 126,221 Machodoc (87) 0 Kinsale (88) 0 St. George Island (89) 69,064 Point Lookout (90) 5,786 Lottsburg (96) 0 Heathsville (97) 0 Burgess (98) 0 Charlotte Hall (162) 0 3,558,925 sq.m 355.89 hectares 879.42 acres 35 TABLE 6. (continued) Upper Potomac River 11 Washington West (28) 0 0 Washington East (29) 0 Alexandria (34) 4,958,026 Fort Belvoir (39) 71,638 Mt. Vernon (40) 10,802,292 Quantico (47) 192,317 Indian Head (48) 75,120 Widewater (55) 393,649 Passapatanzy (64) 0 King George (65) 229,500 Port Tobacco (161) 11,032 16,733,574 sq.m 1,673.36 hectares 4,134.95 acres Middle Eastern Shore 12 Taylors Island (62) 0 Golden Hill (63) 10,706 Barren Island (72) 1,771,662 Honga (73) 1,944,805 Wingate (74) 908,260 Nanticoke (75) 0 Richland Point (82) 37,607 Bloodsworth Island (83) 3,852,761 Deal Island (84) 604,751 Monie (85) 186,921 Kedges Straits (91) 1,564,884 Terrapin Sand Point (92) 58,520 Marion (93) 2,431,256 Mardela Springs (163) 0 Wetipquin (164) 0 13,372,133 sq.m 1,337.21 hectares 3,304.30 acres Tangier Island Complex 13 Chesconessex (108) 9,011,201 Parksley (109) 3,182,770 Tangier Island (107) 6,518,931 Ewell (99) 23,243,500 Great Fox Island(100)13,621,230 Kedges Straits (91) 4,814,988 Terrapin Sand Point (92) 2,034,988 Crisfield (101) 1,804,570 Marion (93) 0 Saxis (102) 0 64,232,278 sq.m 6,423.23 hectares 15,872.08 acres continued 36 M wr TABLE 6. (continued) 0 Lower Eastern Shore 14 Elliotts Creek (142) 199,143 Townsend (143) 144,213 Cape Charles (133) 2,553,288 Cheriton (134) 727,388 Franktown (124) 4,417,725 Jamesville (119) 4,044,617 Nandua Creek (113) 3,759,666 Pungoteague (114) 7,062,269 Chesconessex (108) 190,303 23,098,612 sq.m 2,309.86 hectares 5,707.77 acres Reedville 15 Fleets Bay (112) 1,328,840 Reedville (106) 712,765 Burgess (98) 0 2,041,605 sq.m 204.16 hectares 504.49 acres Rappahannock River Complex 16 Mathews (123) 99,557 Wilton (117) 0 Deltaville (118) 5,181 Irvington (111) 75,006 Urbanna (110) 0 Champlain (86) 0 Mount Landing (94) 0 Tappahannock (95) 0 Dunnsville (103) 0 Morattico (104) 0 Lively (105) 0 Saluda (116) 0 179,744 sq.m 17.97 hectares 44.40 acres New Point Comfort Region 17 Mathews (123) 0 New Point Comfort (132) 3,235,840 3,235,840 sq.m 323.58 hectares 799.58 acres continued 37 TABLE 6. (continued) Mobjack Bay Complex 18 Achilles (131) 4,772,311 New Point Comfort (132) 8,317,503 Ware Neck (122) 1,685,917 Mathews (123) 270,770 15,046,501 sq.m 1,504.65 hectares 3,718.06 acres York River 19 Poquoson West (140) 311,003 Yorktown (139) 2,760 Clay Bank (130) 0 Achilles (131) 2,256,782 West Point (115) 0 Toano (120) 0 Gressitt (121) 0 Williamsburg (129) 0 2,570,545 sq.m 257.05 hectares 635.18 acres Lower Western Shore 20 Cape Henry (152) 433,113 Hampton (147) 2,704,022 Poquoson East (141) 7,622,974 Poquoson West (140) 2,048,572 Norfolk North (150) 0 Little Creek (151) 0 Kempsville (156) 0 Princess Anne (157) 0 12,808,681 sq.m 1,280.87 hectares 3,165.09 acres James River 21 Hampton (147) 0 Newport News South (149) .0 Westover (125) 0 Charles City (126) 0 Brandon (127) Norge (128) 136,579 Savedge (135) 0 Claremont (136) 0 Surry (137) 0 Hog Island (138) 0 continued 38 TABLE 6. (continued) Yorktown (139) 0 Bacons Castle (144) 0 Mulberry Island (145) 0 Newport News North (146) 0 Benns Church (148) 0 Norfolk North (150) 0 Chuckatuck (153) 0 Bowers Hill (154) 0 Norfolk South (155) 0 Kempsville (156) 0 136,579 sq.m 13.66 hectares 33.75 acres" Chincoteague Bay Berlin (167) 0 Public Landing (169) 0 Tingles Island (170) 8,524,705 Girdle Tree (171) 0 Boxiron (172) 6,879,525 Whittington Point (173) 1,899,433 Chincoteague West (174) 0 Chinoteague East (175) 4,035,734 21,339,397 sq.m 2,133.94 hectares 5,273.06 acres *Aerial photography unavailable, therefore, acreage data not collected. SAV presence in quadrangle verified by ground truth surveys. See maps in APPENDIX C, and discussion of Section 2, Upper Eastern Shore, and Section 3, Upper Western Shore, in Results. "Acreage represents only'a portion of section. See discussion in Results. ***Aerial photography unavailable, therefore, acreage data not collected. SAV presence in quadrangle verified by ground truth surveys., See discussion of Section 21 in Results. 39 TABIE 7. FREQUENCY OF STATIONS WITH ROOTED SUBMERGED AQUATIC VEGETATION ON THE CHESAPEANE BAY SYSTEM, 1971-86 (Survey conducted annually by the Maryland Department of Natural Resources) RIVER SYST04 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 Elk & Bohemia Riveri 6.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sassafras 30.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 10.0 0.0 10.0 Hadell-Swan Points 16.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Chester River 61.1 36.1 26.5 23.5 25.0 25.7 38.9 44.4 33.3 38.9 13.9 0.0 1.1 19.4 22.0 11.0 Love-Yjant Points 0.0 0.0 0.0 12.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Eastern Bay 34.0 46.5 34.0 36.2 21.7 42.2 28.3 26.1 17.3 34.8 4.4 4.3 17.4 6.5 17.4 9.0 Choptank River 35.0 39.7 19.3 27.6 1.7 39.0 25.8 28.3 26.7 25.0 1.7 6.7 5.0 1.7 11.7 5.0 Little Choptank River 21.0 21.0 0.0 0.0 0.0 15.8 5.3 5.3 5.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 James-Barren Islands 44.1 35.3 2.9 5.9 8.8 2.9 0.0 0.0 0.0 0.0 0.0 2.9 0.0 0.0 2.9 0.0 Honga River 50.0 40.0 13.3 16.7 10.3 17.2 3.3 3.3 0.0 0.0 0.0 3.3 3.3 0.0 3.3 10.0 Fishing Bay 8.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Nanticoke-Wicamico River 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Manokin River 40.0 46.7 13.3 20.0 7.1 6.7 20.0 0.0 0.0 0.0 6.7 13.3 0.0 6.7 13.3 13.3 Little & Big Annemessex R. 70.0 60.0 30.0 57.9 33.3 30.0 30.0 15.0 0.0 5.0 5.0 10.0 0.0 10.0 18.8 25.0 Pocamoke, Sound 18.2 10.0 4.8 15.0 9.1 10.0 4.5 0.0 0.0 0.0 0.0 0.0 0.0 4.8 0.0 Bloodsworth-Sound Marsh Is. 37.5 22.7 10.9 11.6 7.0 2.2 4.4 0.0 0.0 2.2 11.1 2.2 4.3 0.0 2.4 4.4 Smith Island 64.7 45.5 25.0 35.3 22.2 35.3 23.5 5.8 17.6 47.1 47.1 41.2 35.3 29.4 23.5 29.4 Total Eastern Shore 36.4 28.5 13.3 18.0 9.7 17.7 13.9 11.6 9.0 12.4 5.4 4.5 5.6 4.5 8.3 6.5 Susquehanna Flats 44.4 2.7 0.0 13.5 11.1 8.1 11.1 2.7 8.1 0.0 2.7 13.5 5.4 0.0 2.7 2.7 Qzpowder-aish Rivers 11.1 0.0 0.0 0.0 0.0 11.1 0.0 11.1 22.2 11.1 11.1 11.1 0.0 11.0 11.1 Back-Middle Rivers 13.6 4.6 4.6 4.6 9.1 4.6 9.1 4.5 4.5 9.1 4.5 0.0 19.0 17.6 19.0 19.0 Patapsco River 0.0 5.0 4.8 9.5 9.5 14.2 9.5 9.5 0.0 9.5 0.0 4.8 0.0 0.0 0.0 Magothy River 33.3 0.0 16.7 16.7 16.7 25.0 8.3 16.7 16.7 8.3 0.0 0.0 16.7 0.0 0.0 Severn River 40.0 20.0 26.7 26.7 0.0 46.2 20.0 26.7 20.0 13.3 6.6 0.0 6.7 0.0 0.0 0.0 South-West-Rhode, River 0.0 0.0 0.0 0.0 0.0 12.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Curtis-Cove Points 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.3 6.0 0.0 0.0 0.0 0.0 0.0 0.0 Patuxent River 2.0 4.3 0.0 4.0 0.0 2.1 2.0 2.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Total Western Shore 6.8 4.2 4.1 8.3 5.0 8.4 8.8 5.0 7.2 4.0 3.7 3.6 4.6 2.7 3.1 3.6 Percent of stations vegetated 28.5 21.0 10.5 14.9 8.7 14.9 12.4 9.5 8.4 9.7 4.9 4.2 5.3 4.0 5.7 5.6 Number of areas with no *5. 0 9.0 12.0 9.0 11.0 8.0 8.0 12.0 13.0 16.0 12.0 16.0 15.0 17.0 13.0 14.0 SAV recorded **no stations sampled for this location Resul ts 1. SUSQUEHANNA FLATS The abundance of SAV in this section increased by 16%, from 2011 hectares in 1985 to 2339 hectares in 1986 (Tables 4-6). This represents 68% of the SAV found in the Opper Bay zone. Mapping of SAV in this section was accomplished by use of aerial photography and, additionally, from information provided by Stan Kollar, of HCC, for areas where SAV was too sparse to be detected from aerial photography. More SAV was detected in the flats from aerial photography than in previous years, as the density appears to be increasing. Nine species of SAV were reported in 1986 with M. spicatum the most abundant and H. dubia, V. americana, H. verticillata and C. demersum also occurring in significant abundance. Species information and percent cover for specific beds in this area based on ground information from Stan Kollar are presented in Appendix B. The Md.DNR survey found SAV at 5 of 37 stations they sample annually in the Susquehanna Flats. M. spicatum was the most abundant species, occurring at 3 stations (Table 7). Transplantation efforts funded by the state of Maryland to Stan Kollar of HCC continues to be emphasized in this section. An SAV bed of approximately 1/2 acre planted in 1986 consisting of V. americana in shallow water and a fringing zone of H. dq@@ in slightly deeper water is growing very well. Greatest success appears to occur when plant spacings have been 1 meter or less. 41 2. UPPER EASTERN SHORE 0 Aerial photography for 1986 was unavailable for the Gunpowder Neck quadrangle, therefore, numerical data are unavailable. Presence of SAV in quadrangle was verified by ground truth surveys. Gunpowder Neck quadrangle had no SAV mapped in this section in 1985. Excluding a consideration of the 41 Gunpowder Neck quadrangle, this section showed a 45% decrease in SAV from 1985 to 1986. A total of 58 hectares (2% of the SAV in the Upper Bay zone) were mapped in 1986 as compared to 105 in 1985 (Tables 4-6). The greatest decrease in this section occurred along the Elk River, while decreases were seen along other rivers. Conversely there was an increase in SAV in the Sassafras River in the Galena quadrangle. 41 The Md.DNR survey found no SAV at 15 stations in the Elk and Bohemia Rivers, or the 5 stations from Howell to Swan Point (Table 7). M. spicatum was found at one of the 10 stations on the Sassafras River. Four species of SAV were reported in this section by citizen and charterboat captain surveys. These species included V. americana, M. spicatum, E. canadesis and Trava natans. T. natans is particularly significant because of previous infestations in portions of the Potomac River in the 1950's and early 1960's. 3. UPPER WESTERN SHORE Aerial photography was unavailable in 1986 for three Upper Western Shore quadrangles (Edgewood, Middle River, and Gunpowder Neck) which had contained 214.11 hectares in 1985 (89.8% of the SAV present in Section 3 in 1985). Therefore, maps of SAV beds and numerical data for 1986 are 42 unavailable for these three quadrangles, and comparisons of these quadrangles', or the entire section's, total SAV acreages to previous years would be erroneous and are not made here. Of the nine remaining quadrangles in this section, SAV mapped from 1986 aerial photography totaled 4.09 hectares, all of it occurring in the Gibson Island (24) quadrangle. This contrasts with 1985 when these nine quadrangles had a total of 24.4 hectares SAV, of which 11.4 hectares occurred in the Gibson Island quadrangle. Presence of SAV in 1986 in this section (including the Edgewood, Middle River, and Gunpowder Neck quadrangles) was verified by numerious sightings by the Citizens' and the Charter Boat Captains' Surveys. Five species were reported by these groups: M. spicatum, C. demersum, L. americana, P. pectinatu , E. canadensis with the former two most often reported. SAV sightings were principally in the lower portions of the Middle and Gunpowder Rivers, and Saltpeter and Seneca Creeks, and were principally in areas where SAV was reported in 1985. The Md.DNR survey found no SAV at 42 stations located in the Gunpowder, Bush, Patapsco and Magothy Rivers while three of 21 stations in the Middle and Back Rivers section had SAV (M. spicatum) (Table 7). 4. CHESTER RIVER In 1986, only 341 hectares of SAV (10% of the SAV in the Upper Bay zone) were mapped in the Chester River Section, a decrease of 49% from the 671 hectares mapped in 1985 (Tables 4-6). Most of the SAV (87%) once again occurred on the Langford Creek qbadrangle. Seven species of SAV were reported in the Chester River Section by citizen, charterboat captain and 43 Md.DNR surveys. Species reported include, R. maritima, E. pectinatus, P. perfoliatus, Z. palustris, t. spicatum, V. americana and E. canadensis, with R. maritima and P. perfoliatus being most abundant. The Md.DNR survey found SAV at only 4 (11%) of 36 sampling stations in 1986, compared to 8 (22%) in 1985 (Table 7). 5. CENTRAL WESTERN SHORE There were only 0.7 hectares of SAV mapped in the Central Western Shore section in 1986, a 97.3% decrease from the 26.3 hectares mapped in 1985 (Tables 4-6). This is less than 1% of the SAV found in the Middle Bay zone. The large SAV bed present in Herring Bay in 1985 was absent in 1986. C Citizen survey responses for the most part corroborated the paucity of SAV in this section. Species of SAV reported were R. maritima, E. pectinatus and Z. palustris. The Md.DNR survey found no rooted SAV in the Severn, South, West and Rhode Rivers sections (Table 7). 6. EASTERN BAY In 1986, 244 hectares of SAV (6% of the SAV in the Middle Bay zone) were mapped from aerial photography, a decrease of 31% from the 356 hectares reported in 1985 (Tables 4-6). R. maritima was the most prevalent species found in the Eastern Bay section, based on surveys by citizens, charterboat captains, and the Md.DNR. Other species reported were Z. palustris, M. spicatum, NaJas 5k., and P. pectinatus. 44 The Md.DNR survey again found no SAV at the Love Point to Kent Point stations. In the Eastern Bay they found only 4 (8.7%) of 46 stations vegetated, a decrease from the 8 stations vegetated in 1985 (Table 7). R. maritima was the only species found in the Md.DNR survey. 7. CHOPTANK RIVER In 1986 there were 452 hectares of SAV (11% of the SAV in the Middle Bay zone) mapped in the Choptank River section (Tables 4-6). This represents a 70% decrease from 1,528 hectares reported in 1985. These results also corroborate reports from University of Maryland researchers at Horn Point which indicated less SAV in the Choptank River in 1986 than in 1985. Ground surveys on the river by citizens and charterboat captains located only 4 species of SAV in this section, with R. maritima being the most prevalent. Several surveys reported Z. marina, while Z. palustris was also found. The Md.DNR survey found rooted SAV at only 3 (5%) of 60 stations on the Choptank River and Little Choptank River in 1986 (Table 7). This is a decrease from the 7 (11.6%) vegetated sites reported by the Md.DNR survey in 1985. 8. PATUXENT RIVER In 1986 only 19 hectares of SAV (0.5% of the SAV in the Middle Bay zone) were noted on aerial photography of this section (Tables 4-6). This is 56% less than the 44 hectares mapped in 1985. There were sporadic sightings of 6 SAV species in the Patuxent River by citizens and charterboat 45 captains. Those species were: Z. palustris, V. americana, E. canadensis, guadalupensis, @. demersum, and -R. maritima. The Md.DNR survey found no SAV at 43 stations they surveyed (Table 7). 9. MIDDLE WESTERN SHORE There were 6 hectares of SAV (0.1% of the SAV in the Middle Bay zone) mapped from aerial photography of this section in 1986, a decrease of 74% from the 23 hectares mapped in 1985 (Tables 4-6). As in 1985, most SAV detected on 1986 aerial photography was in small ponds and marshes that drain into the Bay. Species reported by.citizens' ground survey were R. maritima, M. spicatum and V. americanA. The Md.DNR survey found no SAV at 10 stations sampled from Curtis to Cove Points (Table 7). 10. LOWER POTOMAC RIVER In 1986 there were 356 hectares of SAV (9% of the SAV in the Middle Bay zone) mapped in the Lower Potomac River section, which is a 7% decrease from 381 hectares mapped in 1985 (Tables 4-6). Most (88%) SAV in this section occurs at the north end in the Nanjemoy and Mathias Point quadrangles within the transition zone in the Potomac River where salinity ranges from 4.0 to 11.0 ppt. Citizen surveys reported three species in this section, V. americana, M. spicatum and C. demersum. The U.S. Geological Survey sampled 51 transects in the lower section and found trace amounts of R. maritimA and Z. palustris on 3 transects in the estuary of the Wicomoco River (Tables 8 and 9). The upper Wicomoco 46 Table 8. Species of submersed aquatic vegetation found on vegetated transects in the estuary of the Potomac River, summer, 1986 Study areal Species present Wicomico River regi2n Ruppia maritima D below Chaptico Bay Zannichel7a palustris St. Marys no vegetation River region lSee Figure 6 for location of sampling transect in a study area and Table 9 for number of vegetated transects/total transects per study area. 2The Wicomico River maintains a freshwater to saltwater gradient and thus was partitioned into transition zone and estuary. Only the estuary was sampled. 47 Table 9. Relative occurrence of vegetated transects and grabs for the tidal Potomac River and Estuary, 1986 [Relative occurrence as vegetated transects/total transects per study area; n.d. is no data available] 1986 Salinity zo?e/ Sampling study areas unit Spring Summer Fall Tidal River Roosevelt Island Transects 3/6 n.d. 4/6 to Wilson Bridge Grabs 25/93 n.d. 31/105 Dyke Marsh Transects 4/4 n.d. 4/4 Grabs 130/183 n.d. 146/168 Gunston Cove Transects 7/13 n.d. 4/13 Grabs 67/266 n.d. 81/249 Piscataway Creek Transects 13/13 n.d. 13/13 Grabs 192/347 n.d. 324/444 Pomonkey Creek Transects 1/4 n.d. 0/4 Grabs 2/63 n.d. 0/120 Mattawoman Creek Transects 2/22 n.d. 3/22 Grabs 17/360 n.d. 16/327 Transition Zone Aquia and Potomac Transects n.d. n.d. 0/26 Creek region Grabs n.d. n.d. 0/390 Maryland Point Transects n.d. n.d. 5/10 Grabs n.d. n.d. 31/171 Nanjemoy Creek- Transects 24/37 n.d. 23/37 Port Tobacco Grabs 289/765 n.d. 231/612 River region Estuary Wicomico River Transects n.d. 3/20 n.d. region below 2 Grabs n.d. 5/309 n.d. Chaptico Bay St. Marys Transects n.d. 0/31 n.d. River region Grabs n.d. 0/432 n.d. iSee Figs. 4, 5 and 6 for exact location of sampling transects in a study 2area. The Wicomico River maintains a freshwater to saltwater gradient and thus was partitioned into transition zone and estuary. Only the estuary was sampled. 48 above Chaptico Bay was not sampled in 1986 but had been reported vegetated in 1978-81. The Maryland Point and Nanjemoy-Port Tobacco regions were vegetated but there was no vegetation in the Aquia-Potomac Creek region as reported by the USGS survey (Table 9). The most widely occurring species were V. americana, M. spicatum, f!. perfoliatus, and R. maritima. These results are similar to those from the 1978-81 ( USGS) surveys (Carter et al., 1985). The Md.DNR survey found no SAV at 65 stations in the estuary portion of the Potomac River, from the Route 301 Bridge to Point Lookout, Md (Table 7). In the transition zone, part of which is in the Upper Potomac section, the Md.DNR survey found SAV at 7 (21%) of 34 stations. Species found. in this zone were V. americana, spicatum, C. demersum, f!. perfoliatus and R. martima. 11. UPPER POTOMAC RIVER In 1986 there were 1673 hectares of SAV (41% of SAV in the Middle Bay zone) mapped from aerial photography (Tables 4-6). This is an 16% increase over 1439 hectares reported in 1985. The vegetation is still largely confined to the upper reaches of the section, as 94% of the vegetation was mapped on the Alexandria and Mt. Vernon quadrangles. There appeared to be a downriver spread of abundance, as SAV increased on the Mt. Vernon, Ft. Belvoir, Quantico, Indian Head, Widewater, Port Tobacco and King George quadrangles. This spread was confirmed by the USGS ground survey (see below).- USGS estimates of SAV acreage in this section in 1986 remained about the same as in 1985 (1457 hectares), which is 12.9% less than that estimated 49 from the aerial survey. Macrophyte species found on vegetated transects in the tidal Potomac River and transition zone are summarized in Table 10. The relative occurrence of SAV in vegetated transects and grabs by salinity zone is shown in Table 9. H. verticillata was found only in the tidal river (fresh water) and at Mallows Bay (near MP-02R) just inside the transition zone. H. verticillata does not appear to tolerate salinities greater than 5 ppt. (Carter, et al., 1987). In the tidal river, H. verticillata dominates the vegetated areas above Marshall Hall, Md. (Fig. 7) and the plants are very dense in that reach (Fig. 8). Below Marshall Hall, Md., M. spicatum becomes dominant and the vegetation is patchy (Fig. 8). Since 1985, vegetation has spread about 9 kilometers further downstream in the tidal river. The most abundant and most widely occurring species in the fall were H. verticillata, 1@. demersum, 11. spicatum, and V. americana which composed 94 percent, 38 percent, 24 percent, and 18 percent, respectively, of the vegetated samples in 1986 (Table 11). The percent occurrence of H. verticillata has increased from 56 percent in 1984 to 79 percent in 1985, and to 94 percent in 1986. The most abundant and widely occurring species reported by the citizens' survey were H. verticillata, M. spicatum, H. dubia, C. demersum, V. americana and N. quadalupensis. The Md.DNR survey found 2 (6.9%) of 29 stations vegetated in the freshwater portions of the Potomac River. Species found were H. verticillata, M. spicatum, H. dubia and V. americana. 50 Table 10. Species of submersed aquatic vegetation found in vegetated transects in the tidal Potomac River and transition zone of the Estuary, 1986 [n.d. is no data available] Salinity zyne/ Species 2 present study area Spring Fall Tidal River Roosevelt Island HYD, ZANN, VALL HYD, MYRIO, P. PECT, VALL to Wilson Bridge Dyke Marsh CERAT, HET, HYD, CHARA CERAT, HET, HYD, MYRIO MYRIO, N. FLEX, VALL, VALL, N. MIN N. GUAD, N. MIN, P. PECT, ZANN Gunston Cove CERAT, HET, HYD, CERAT, HET, HYD, MYRIO, 14YRIO, N-MIN, VALL N. MIN, VALL P. PUS Piscataway Creek CERAT, MYRIO, HET, HYD, CERAT, HYD, MYRIO, VALL, VALL, N. GUAD, N. MIN, HET, N. GUAD, N. MIN ZANN, CHARA, N. FLEX Pomonkey Creek HYD no vegetation Mattawoman Creek VALL, ZANN, HYD VALL, HYD Transition Zone Aquia and Potomac n.d. no vegetation Creek region Maryland Point n.d. VALL Nanjemoy Creek- VALL, P. PECT, P. CRIS, VALL, P. PECT, P. PERF, Port Tobaco P. PERF, ZANN, CERAT, P. CRIS, CERAT, RUP, River region MYRIO, CHARA MYRIO iSee Fig. 4 and 5 for location of sampling transects in a study area and Table 9 for number of vegetated transects/total transects per study area. 2HYD = Hydrilla verticillata, MYRIO = Myriophyllum spicatum, VALL = Vallisneria americana, CERAT = CeratophY77um demersum, HET = Heteranthera d&tg, N. MIN = YgjgLs minor, N. GUAD = Ygigs guadalypensis, ZANN Zanniche7lia Dalustris, P. PERF = Potamogeton perfo7iatus, P. PUS Potamogeton pusi7lus, RUP = Ruppia maritima, N. FLEX = Nitel7a flexilis 51 77-115' 717' 390 % WASHINGTON, D.C. Chain Bridge EXPLANATION Memorial Percent cover of Hydrilla Bridge in vegetated areas > 95 14% National POGO 71-95 31-70 Airport 1-30 0 Alexandria H&'7t"'17g Woodrow Wilson Bridge VIRGINIA 380 Dyke Marsh Broad Cr 45' swan Gr Dogue Cr C( Gunston isc- Cove 0 z Marshall Hall Hallowing Occoquan Pt - 06. Bay MARYLAND 0 5 MILES Indian Head 5 KM Figure 7. Percent cover of Hydrilla in vegetated areas in the tidal Potomac River in the fall, 1986 (from Rybicki et al., 1987). 52 770116' 717- 390 WASHINGTON, D.C. Chain Bridge EXPLANATION Memorial Percent cover of submersed Bridge aquatic vegetation - 1986 W 70-100 National aG 40 - 70 -41. 1-10 Airport 10-40 01-10 Alexandria /YU/71, - Woodrow "7P C" Wilson Bridge VIRGINIA 380 Dyke Marsh Broad Cr 45' swar, Cr Gunston Dogue Cr Piscataway C1 Cove H Ilowing Marshall Hall Occoquan Pt Bay MARYLAND 0 0 5 MILES i I Indian Head 5 KM Figure 8. Percent cover of submersed aquatic vegetation in the tidal Potomac River in the fall, 1986 (from Rybicki et al., 1987). 53 Table 11. Frequency of individual species in vegetated grabs in the freshwater tidal Potomac River, 1984-1986, in percent (number of grabs with a species/number of vegetated grabs) 1984 1985 1986 Species Spring Fall Spring Fall Spring Fall CeratophY77 demersum 6 22 17 47 49 38 Chara spp. 2 0 0 0 2 0 Heteranthera dubia 0 17 6 25 9 4 Hydril7a vertici7lata 32 56 39 79 72 94 41 Myrfophy7lum spicatum 11 31 52 55 34 24 ggiM gy dalypensis 0 19 7 13 4 <1 ggils minor 2 1 0 4 8 9 Nite7la f7exi7is 0 3 2 0 3 0 Potamogeton crispus 2 0 0 0 0 0 Potamogeton pectinatus 17 0 5 0 <1 <1 Potamogeton pusil7us 0 1 0 0 <1 0 VaMsneria americana 34 23 16 20 16 18 ZannicheMa pa7ustris 23 2 12 <1 9 0 Total vegetated grabs in 1984, Spring-47, Fall-165, 1985, Spring-252, Fall- 363, 1986, Spring-432, Fall-598 54 12. MIDDLE EASTERN SHORE In this section in 1986 there were 1337 hectares of SAV (33% of the SAV in the Middle Bay zone), which is an increase of 13% over 1188 hectares M found in 1985 (Tables 4-6). This section has shown a tremendous increase in SAV since 1984, when only 33 hectares of SAV were reported. In general, the increase occurred in the southern half of the section, as all 6 quadrangles there showed increases in SAV, while 5 of 6 quadrangles in the north half of the section showed decreases. Charterboat captain surveys in this section found only R. maritima occurring. The Md.DNR survey sampled 169 stations in this section, examining sites in the James-Barren Island system, Honga River, Fishing Bay, Barren Island/South Marsh Isl-and, Naticoke-Wicomico, River, Manokin River and Little/Big Annemessex River (Table 7). SAV was found at 2 stations each in the Bloodsworth/South Marsh Island and Manokin River sections. Three Honga River and 5 Little/Big Annemessex River stations were vegetated. No vegetation was reported for the James Island/Barren Island, Fishing Bay or Nanticoke/Wicomico River sections. R. maritima was the only species found at all of the vegetated stations. 13. TANGIER ISLAND COMPLEX This section contains the greatest amount of SAV in the Lower Bay zone, with 6423 hectares or 52% of the total in this zone occurring in 5 quadrangles (Tables 4-6). The largest amount of SAV occurs in the Smith and Tangier Islands area. It is one of the more productive areas for SAV which 55 has been increasing in abundance since 1978 when 3759 hectares were found (71% less than reported for the 1986 survey). Other areas with significant stands of SAV include the Great Fox Island area, the Big Marsh area between Chesconessex and Deep Creeks, and the west side of Webb and Halfmoon Islands. Although Z. marina and R. maritima are dominant species in this section, the results of the charterboat captains' survey and citizens' survey reported only R. maritima at all but two of the stations, where both species had been observed. The Md.DNR survey found SAV at only 2 of 54 stations. These stations were located on Smith Island and only R. maritima was present. C 14. LOWER EASTERN SHORE This section contained 2,310 hectares of SAV in 1986 (Tables 4-6) or 18.7% of the SAV in the Lower Bay zone. This was only a 3.7% increase over 1985 but is 16.0% more than that reported during the 1978 survey. Large, dense beds of Z. marina and R. maritima were present at the mouths of Cherrystone Inlet near Cape Charles, Hungars Creek, Mattawoman Creek, Occahannock Creek, Craddock Creek, Pungoteague Creek and Onancock Creek. Areas between these creeks are sparsely vegetated because of the dynamic and exposed nature of these sites. SAV in the Vaucluse Shores historical area increased 11% from 1985 to 298.2 hectares (Table 12). 55% of these beds are considered dense (crown density scale, Fig. 2). 56 TABLE 12. AREAS OF SAV AT HISTORICAL MAPPING SITES (LOWER BAY ZONE) 1937-1986. FOR EACH OF THE FOUR DENISTY CLASSES: 1. VERY SPARSE, <10%, 2. SPARSE, 10- 40%, 3. MODERATE, 40-70%, 4. DENSE, 70-100%. Parrott Islands Area m 2 Date <10% 10-40% 40-70% 70-100% Total 1937 0 297,024 1,598,268 0 1,895,292 1951 394,797 778,146 1,222,410 1,158,384 3,553,737 1960 411,306 631,566 547,014 1,947,372 3,537,258 1968 92,064 1,354,110 1,205,628 124,374 2,776,176 1974 0 2,922 7,710 0 10,632 1978 0 22,872 0 0 22,872 1980 0 0 0 0 0 1981 0 0 0 0 0 1984 0 0 0 0 0 1985 0 0 0 0 0 1986 0 0 0 0 0 Fleets Bay 2 Area m Date <10% 10-40% 40-70% 70-100% Total 1937 0 1,385,424 548,076 744,864 2,678,364 1953 1,488,258 597,354 591,018 284,232 2,960,862 1961 1,572,612 1,330,140 1,643,892 884,280 5,430,924 1969 1,436,403 1,938,660 1,592,170 270,372 5,237,605 1974 105,714 1,624,884 1,325,040 0 3,055,638 1978 167,688 528,918 33,592 0 730,198 1980 0 121,890 26,040 2,472 150,402 1981 0 683,250 9,816 13,986 707,052 1984 232,164 730,680 33,318 14,556 1,010,718 1985 436,989 377,019 44,733 0 858,741 1986 753,278 49,268 93,640 0 896,186 Mumfort Islands Area m 2 -70% -100% Total Date <10% 10-40% 40 70 1937 0 495,060 397,368 23,832 916,260 1953 151,728 699,252 106,356 1,461,846 2,419,182 1960 0 258,210 1,880,238 0 2,138,448 1971 0 685,536 1,088,976 0 1,774,512 1974 0 127,488 23,826 0 151,314 1978 0 0 0 0 0 1980 0 0 0 0 0 1981 0 0 0 0 0 1984 0 0 0 0 0 1985 0 0 0 0 0 1986 0 0 0 0 0 continued 57 TABLE 12. (continued) Jenkins Neck Area m 2 Date <10% 10-40% 40-70% 70-100% Total 1937 0 1,180,200 820,612 32,520 2,033,332 1953 426,480 647,112 717,180 1,811,832 3,602,604 1960 140,448 794,178 639,012 2,067,948 3,641,586 1971 0 278,586 2,350,380 33,792 2,662,758 1974 93,972 303,804 1,599,228 93,912 2,090,916 1978 132,714 299,760 671,616 162,408 1,266,498 1980 60,810 191,605 690,968 179,589 1,122,972 1981 0 0 763,194 309,012 1,072,206 1984 72,876 289,388 563,268 954,360 1,879,892 1985 32,988 247,934 496,543 1,416,525 2,193,991 1986 0 754,400 0 lJ45,477 1,899,876 East River Area m 2 Date <10% 10-40% 40-70% 70-100% Total 1937 1,024,010 809,770 1,357,790 85,530 3,277,100 1953 591,840 1,158,490 1,394,740 1,742,050 4,887,120 1963 31,032 1,916,530 2,340,480 0 4,288,042 1971 0 2,007,460 2,253,080 96,620 4,357,160 1974 509,730 348,820 1,955,130 0 2,813,680 1978 47,860 515,000 1,864,850 0 2,427,710 1980 191,520 451,351 808,842 158,634 1,610,347 1981 0 96,174 1,183,542 198,474 1,478,190 1984 181,626 633,012 1,050,666 139,326 2,004,630 1985 0 535,308 829,212 0 1,364,520 1986 95,683 1,000,136 653,318 98,701 1,847,838 Vaucluse Shores Date <10% 10-40% Area m 240-70% 70-100% Total 1938 0 1,120,284 1,451,392 1,480,128 .4,051,804 1948 506,706 1,171,884 1,715,556 0 3,994,146 1955 1,938,258 0 528,996 1,238,124 3,705,378 1966 452,940 402,324 2,534,178 604,176 3,993,618 1972 286,554 364,764 2,515,740 391,770 3,558,828 1978 187,728 507,054 80,872 2,036,526 2,812,180 1980 359,551 7,098 697,842 1,783,938 2,848,429 1�81 327,786 97,950 355,344 1,852,392 2,633,472 1984 0 15,792 1,137,882 1,731,678 2,885,352 1985 0 715,404 522,273 1,459,126 2,696,803 1986 178,241 460,125 687,700 1,655,950 2,982,014 58 15. REEDVILLE The Reedville section (Tables 4-6) contained 204 hectares in 1986, an increase of 18.6% from 1985 but still less than the 364 hectares delineated during the first baywide survey in 1978. Only 1.7% of SAV in the Lower Bay zone is located in this section. There were 89.6 hectares in the Fleets Bay historical area, an increase of 4% from 1985 (Table 12). Most of the SAV beds in this section are in the very sparse (1) or sparse (2) category (Appendix C). 85% of the SAV in the historical site is very sparse. The citizens' SAV survey found R. maritima and Z. marina in Little Bay, Dymer Creek, Indian Creek, Ball Creek, Dameron Marsh, Fleeton Point and Taskmasker Creek. Most of these sites occurred where SAV beds were mapped in 1985, while several field observations indicated SAV at sites in Dymer Creek where no SAV was observed in the 1986 aerial survey. 16. RAPPAHANNOCK RIVER COMPLEX This section contained only 17.97 hectares of SAV in 1986, 2 hectares less than in 1985. Less than 1% of the SAV in the Lower Bay zone is located in this section. The small, dense SAV beds in Milford Haven, consisting of Z. marina and R. maritima, have been relatively stable in the past few years. The bed at the mouth of Carter Creek in the Rappahannock River is still present, although smaller but more dense. A citizens' field report at this site indicated the presence of Z. marina. SAV continues to be absent from the Parrott Island historical site (Table 12). Trans planting by VIMS scientilsts in 1986 was focused again in this section. Transplant sites were in Milford Haven near Hills Creek, Burton 59 Point at the mouth of the Piankatank River, Healy Creek in the Piankatank River and behind Parrott Island in the Rappahannock River. Z. marina has persisted from previous transplant efforts at Burton Point and Healy Creek, although the surviving material is very patchy. Several patches (2-4 m 2) of R. maritima were present at Burton Point. These have originated from plants that were transplanted with Z. marina in 1984 and 1985. Field surveys in the late fall, 1986, revealed numerous, small patches (less than 1 m2) of R. maritima in the Piankatank River near Healy Creek and behind Parrott Island. The 1986 photography did not indicate the presence of SAV, probably because of the small size of these patches. These areas should be intensively monitored in 1987 for persistance of these patches. 17. NEW POINT COMFORT REGION This section contained 324 hectares of SAV in 1986 in an area principally along the shoreline fronting the Chesapeake Bay between New Point Comfort and just north of Horn Harbor (Tables 4-6). Only 2.6% of the SAV on the Lower Bay zone occurs in this section. This is only a 2.4% decrease from that observed in 1985 but is 19.6% more than what was reported in 1978. Z. marina and R. maritima are the SAV species occurring in this section. 18. MOBJACK BAY COMPLEX This section contained 1505 hectares of SAV in 1986 (Tables 4-6), the same amount recorded in 1985, and is 18% of the total SAV in the Lower Bay zone. SAV beds, consisting of Z. marina and R. maritima, are most abundant 60 along the entire shoreline of the Mobjack Bay as well as in 3 of the 4 rivers: Severn, Ware and North. Several small beds of R. maritima were observed within the East River. SAV in the East River historical area increased 35% from 1985 to 184.8 hectares (Table 12). All beds were either sparse or moderate. This amount is still less than the 435.7 hectares found in 1971. The Mobjack Bay area continues to harbor some of the more extensive SAV beds on the western shore of the lower Chesapeake Bay. 19. YORK RIVER This section contained 257 hectares of SAV in 1986 (Tables 4-6), 2.1% of the SAV in the Lower Bay zone. It is an amount similar to that reported for 1985. SAV beds, consisting of both Z. marina and R. maritima, are located principally along the north shore from Gloucester Point to the mouth of the river. The only beds present along the south shore are located on the north side of Goodwin Islands. SAV beds are absent above Gloucester Point except for small (<1 m2) patches of Z. marina at Little Mumfort Island on the north shore, and just below the Naval Weapons Station on the south shore, that were transplanted in 1985 and have persisted through 1986. The SAV beds planted in 1982 and 1983 at Gloucester Point continue to thrive in 10 1986, similar to many of naturally expanding beds along the north shore. SAV in the Jenkins Neck historical area decreased 13% from 1985 to 190.0 hectares (Table 12). Beds were either sparse or dense. SAV is still absent from the Mumfort Island historical area. 61 20. LOWER WESTERN SHORE There were 1281 hectares of SAV in this section in 1986 (Tables 4-6), 2.6% less than that recorded in 1985 but 38.5% higher than that recorded for the 1978 survey. 10.4% of the SAV in the Lower Bay zone is located in this section. SAV beds, consisting of Z. marina and R. maritima, remain as dense beds in Broad Bay, Back River, Drum Island Flats and on the south side of Goodwin Island. Close to 60% of the SAV in this section is located in the Poquoson East Quadrangle. A citizens' report indicated the presence of the two SAV species in beds mapped from the aerial photography. No SAV is present in the southwest and northwest branches of Back River, or in the Poquoson River, Chisman Creek and Back Creek. 21. JAMES RIVER The mainstem James River remains unvegetated in 1986. A small section of the Chickahominy was photographed that was identified as having SAV in 1978, in particular, Gordon and Nettles Creek, and Nayses Bay. The photography showed SAV beds in similar locations as in the 1978 data, indicating that these areas appear to be relatively stable. Although only 13.7 hectares were mapped, we believe this to be an underestimate, as many of these creeks contain SAV but beds are so small that they appear as thin lines both on photographs and on maps. Ground truth information from a graduate student of the University of Virginia, and from several citizens; indicated fringing SAV beds consisting of N. minor, N. quadalupensis, C. demersum and Z. palustris in Sunken Marsh, Morris Creek and the Chickahominy main stem, on the Brandon quadrangle, which was not photographed in 1986. 62 (Numerical data were not collected for Brandon quadrangle nor was a map included in Appendix C.) The student indicated that SAV abundance usually peaks in July and that SAV appeared to be more abundant in 1986 than in 1985. SAV species are probably distributed throughout the Chickahominy River system, occupying the fringes of many tidal creeks. CHINCOTEAGUE BM The first aerial mapping survey of SAV in Chincoteague Bay delineated 2134 hectares in 1986 (Tables 4 and 6). SAV was concentrated in four quadrangles. Beds were mostly moderate (40-70% coverage) to dense (70-100% coverage): Chincoteague East - 403.57 ha (all moderately dense), Whittington Point - 189.94 ha (53% moderate, 13% dense), Boxiron - 687.95 ha (79% moderate, 16% dense), and Tingles Island - 852.47 ha (all dense). Two SAV species were found in this bay with Z. marina predominating in the southern part of the bay and R. maritima in the northern half. In addition, all of the SAV was found on the eastern side of the bay west of Assateague Island in water depths of less than 1 meter (MLW). They were concentrated in four relatively distinct areas (Fig. 9): west of the northern end of Chincoteague Island - 737.60 ha, West Bay - 226.70 ha, Green Run Bay - 317.20 ha, Tingles Island area - 852.40 ha. SAV beds cover approximately 6.6% of the total bottom area found from Ocean City Inlet to a line from Gunboat Point on Wallops Island to Fishing Point on the south end of Assateague Island (total bottom area of approximately 32,536 ha (Pritchard, 1960). Anderson (1970) in an earlier study of SAV in 1970, found abundant SAV between West Bay and Green Run, and between Tingles Island and Goose Point, 63 76 *30' 76*15' 75* T- Isle of Wight Bay Ocean Citv 38*, 15 38' 15 00 Ti G 4@1 I'M d ATLANTIC OCEAN 38' 38* 0 5 MILES 76*30' 76*15' 75' Figure 9. Location of major SAV areas in Chincoteague Bay 1986. 64 and scarce SAV between Sugar Point north to below Tingles Island. In areas where the species co-occurred, R. maritima was found in the shallower, muddier bottoms, while Z. marina predominated in sandier, deeper bottoms. Similar trends along depth gradients were found for these two species in the Chesapeake Bay (Orth, et al., 1979). The presence today of these large stands of SAV has raised questions as to how SAV populations became so abundant given their past history in Chincoteague Bay. Zostera marina was abundant here in the early 1900's but apparently declined to very low levels (if not totally disappearing) during the worldwide eelgrass epidemic in the early 1930's (Rasmussen, 1977; Orth and Moore, 1984). Eelgrass populations along the entire east coast of the United States and the west coast of Europe declined during this period. Anecedotal information indicated some attempt to transplant eelgrass in Chincoteague Bay in the 1940's from existing stands in the Chesapeake Bay. However, there is no confirming documentation, nor are there any subsequent surveys to determine if the transplant material survived. Examination of aerial photographs taken by the Soil Conservation Service in 1937 revealed what appeared to be SAV (no ground truth information was available) in the lower portion of Sinepuxent Bay entering Chincoteague Bay. The presence of large stands of eelgrass and widgeon grass today may have resulted from early transplants surviving and spreading to form current beds, or from spread of small, remnant beds that may have survived the 1930's decline. Given the lack of supporting documentation for the transplant work, the more tenable hypothesis is that the current abundance is a result of the spread of small stands of SAV that survived the decline in the 1930's. 65 SECTION 5 LITERATURE CITED 41 Allaire, R. A., K. W. Potts, T. P. Sheehan and N. R. Sinclair. 1985. Shoreline survey of submersed aquatic vegetation including Hydrilla in the transition zone of the Potomac River during the summer and fall of 1984. Final Report. U.S. Army Corps of Engineers. Contract No. DACW 31-82-D-007. 40 pp. Anderson, R. R. 1970. The submerged vegetation of Chincoteague Bay. Final Report. Assateague Ecological Studies. Univ. of Maryland. pp. 136- 155. Anderson, R. R. and R. T. Macomber. 1980. Distribution of submersed vascular plants Chesapeake Bay, Maryland. U.S. EPA. Final Report. Chesapeake Bay Program. Grant No. R805970. 126 pp. Carter, V., N. B. Rybicki and C. L. Schulman. 1987. Effect of salinity and temperature on germination of monoecious hydrilla propagules. J. Aq. Plant Mgmt. (in press). Carter, V., J. E. Paschal, Jr. and N. Bartow. 1985. Distribution and abundance of submersed aquatic vegetation in the tidal Potomac River and estuary, Maryland and Virginia, May 1978 to November 1981. U.S. Geological Survey Water-Supply Paper 2234A. 54 pp. Godfrey, R. K. and J. W. Wooten. 1981. Aquatic and Wetland Plants of Southeastern United States: Dicotyledons. The University of Georgia Press, Athens. 933 pp. Godfrey, R. K. and J'. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States: Monocotyledons. The University of Georgia Press, Athens. 712 pp. 66 Harvill, A. M. Jr., C. E. Stevens and D. M. E. Ware. 1977. Atlas of the Virginia Flora: Part I, Pteridophytes through Monocotyledons. Virginia Botanical Associates, Farmville. 59 pp. Harvill, A. M. Jr., T. R. Bradley and C. E. Stevens. 1981. Atlas of the Virginia Flora: Part II, Dicotyledons. Virginia Botanical Associates, Farmville. 148 pp. Kartesz, J. T. and R. Kartesz. 1980. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland: Volume II, The Biota of North America. The University of North Carolina Press, Chapel Hill. 498 pp. Orth, R. J. 1973. Benthic infauna of eelgrass, Zostera marina, beds. Chesapeake Sci. 14:258-269. Orth, R. J. and K. A. Moore. 1981. Submerged aquatic vegetation in the Chesapeake Bay: past, present and future. pp. 271-283. In: Proc. 46th North American Wildlife and Natural Resources Conf. Wildlife Manage. Inst., Wash., D.C. Orth, R. J. and K. A. Moore. 1982. The biology and propagation of Zostera marina, eelgrass, in the Chesapeake Bay, Virginia. U.S. EPA. Final Report Chesapeake Bay Program. Grant No. R805953. 187 pp. Orth, R. J. and K. A. Moore. 1983. Chesapeake Bay: an unprecedented decline in submerged aquatic vegetation. Sci. 222:51-53. Orth, R. J. and K. A. Moore. 1984. Distribution and abundance of submerged aquatic vegetation in Chesapeake Bay: an historical perspective. Est. 7:531-540. Orth, R. J., K. A. Moore and H. H. Gordon. 1979. Distribution and abundance of submerged aquatic vegetation in the lower Chesapeake Bay, 67 Virginia. U.S. EPA. Final Report. Chesapeake Bay Program. EPA- 600/8-79-029/SAV1. Orth, R. J., J. Simons, R. Allaire, V. Carter, L. Hindman, K. Moore and N. Rybicki. 1985. Distribution of submerged aquatic vegetation in the Cheapeake Bay and tributaries - 1984. EPA. Final Report. Coop. Agreement X-003301-01. 155 pp. Orth, R. J., J. Simons, J. Capelli, V. Carter, L. Hindman, S. Hodges, K. Moore and N. Rybicki. 1986. Distribution of submerged vegetation in the Chesapeake Bay and tributaries - 1985. U.S.E.P.A. Final Report. 296 pp. Pritchard, D. W. 1960. Salt balance and exchange rate for Chincoteague Bay. Chesapeake Sci. 1:48-57. Radford, A. E., H. E. Ahles and C,. R. Bell. 1968. Manual of the Vascular Flora of the Carolinas. The University of North Carolina Press, Chapel Hill. 1183 pp. Rasmussen, E. 1977. The wasting disease of eelgrass (Zostera marina) and its effects on environmental factors and fauna. pp. 1-51. In: C. P. McRoy and C. Helfferich (eds.). Seagrass ecosystems: a scientific perspective. Marcel Dekkar, Inc., New York. Rybicki, N. B., V. Carter, R. T. Anderson and T. J. Trombley. 1985. Hydrilla verticillata in the tidal Potomac River, Maryland, Virginia, and the District of Columbia, 1983 and 1984. U.S. Geological Survey. Open File Report 85-77. 28 pp. Rybicki, N., R. T. Anderson, J. M. Shapiro, C. L. Jones, and V. Carter. 1986. Data on the distribution and abundance of submersed aquatic vegetation in the tidal Potomac River, Maryland, Virginia and the 68 District of Columbia, 1985. U. S. Geological Survey, Open-File Report 86-126. 49 pp. Rybicki, Nancy B., Anderson, R. T., Shapiro, J. M., Schulman, C. L., Demsey, M. L., and Johnson, K. L., 1987. Data on the distribution and abundance of submersed aquatic vegetation in the tidal Potomac River and Estuary, Maryland, Virginia, and the District of Columbia, 1986: U.S. Geological Survey Open-File Report (in press). Stevenson, J. C. and N. Confer. 1978. Summary of available information on Chesapeake Bay submerged vegetation. U.S. Dept. of Interior, Fish and Wildlife Serv. FWS/OBS-78/66. 335 p. Wood, R. D. and K. Imahori. 1965. A Revision of the Characeae: Volume I, Monograph of the Characeae. Verlag Von J. Cramer, Weinheim. 904 pp. Wood, R. D. and K. Imarhori. 1964. A Revision of the Characeae: Volume II, Iconograph of the Characeae. Verlag Von J. Cramer, Weinheim. 395 icones with Index. 69 APPENDIX A SPECIES OF SUBMERGED AQUATIC PLANTS FOUND IN THE CHESAPEAKE BAY AND TRIBUTARIES (CLASSIFICATION AND NOMENCLATURE DERIVED FROM: GODFREY AND WOOTEN, 1979, 1981; HARVILL, ET AL., 1977, 1981; KARTESZ AND KARTESZ, 1980; RADFORD, ET AL., 1968; WOOD AND IMAHORI, 1965, 1965) Family Species Common name Characeae Chara braunii Gm. Muskgrass (muskgrass) Chara zeylanica Klein. ex Willd., em. Nitella flexilis (L). Ag., em. Potamogetonaceae Potamogeton perfoliatus L. var. (pondweed) bupleuroides (Fernald) Farwell Redhead grass Potamogeton pectinatus L. Sago pondweed Potamogeton crispus L. Curly pondweed Potamogeton pusillus L. Slender pondweed Ruppiaceae Ruppia maritima L. Widgeongrass Zannichelliaceae Zannichellia palustris L. Horned pondweed Najadaceae a@@ quadalupensis (Sprengel) Southern naiad Magnus ag.j@ gracillima (A. Braun) Magnus Naiad Najas minor Allioni Hydrocharitaceae Vallisneria americana Michaux Wild celery (frogbit) Elodea canadensis (Michaux) Common elodea Eqeria densa Planchon Water-weed Hvdrilla verticillata (L.f.) Hydrilla Boyle Pontedariaceae Heteranthera dubia (Jacquin) Water stargrass. (pickerelweed) MacMillian Ceratophyllaceae Ceratophyllum demersum L. Coontail (coontail) Trapaceae _Trapa natans L. Water chestnut Haloragaceae Myriophyllum spic.Atum L. Eurasian (water milfoil,) water milfoil Zosteraceae Zostera marina (L.) Eelgrass 70 APPENDIX B PERCENT COVER FOR SAV SPECIES PRESENT IN BEDS IDENTIFIED IN THE ABERDEEN, HAVRE DE GRACE AND SPESU`TIE QUADRANGLES BASED ON FIELD OBSERVATIONS MADE BY STAN KOLLAR (HARFORD COMMUNITY COLLEGE) (MS - MYRIOPHYLLUM SPICATUM; VA - VALLISNERIA AMERICANA; HV - HYDRILLA VERTICILLATA; HD - HETERANTHERA DUBIA; CD - CERATOPHYLLUM DEMERSUM; N - NAIAD SPP.; PPC POTOMOGETON PECTINATUS Bed #'s SDecies Present Percent Cover Aberdeen FA3, GA4, HA3, IA3 Ms 70 Cd <5 N <1 Havre de Grace EA4, DA4 Ms 70 Cd 5 Hv 5 PA4, QA4, RA2 ms 70 Hd 5 Va 5 Hv 5 GA3, HA3, IA4, JA3 Ms 60 Cd 5 Hv I KA3, LA2, MA3, NA4 Ms 65 Cd <1 Hv <1 N <1 DB3 Ms 70 Hv 15 Hd 5 Va 5 Cd 5 HB4, GB2 Ms 60 Hd 20 Va 5 Cd 5 N <1 Hv <1 71 APPENDIX B. (continued) Harve de Grace Bed Vs Species Present Percent Cover OA4, SA2, TA3, UA4 Ms 80 Hd 5 Va <5 Cd <5 SB2 Ms 45 Cd 5 RB1, QB2, VB2 Ms Cd 2 Hd 2 Va 2 Ppc 2 XA4 Ms 40 Va 20 Hv 15 Cd 10 Hd 5 LB3, MB2, N134 (north Ms 25 of Perry Point) Hd 25 Va 15 Cd 10 Hv 5 MB2, NB4 (south of Perry Hd 45 Point) Ms 10 Cd 5 Va 5 N 5 HC2 (north half) Va 70 Ms 5 Hv 5 Cd 5 HC2 (south half) Va 25 Ms 20 Hv 5 Cd 5 AC3, BC3 Ms 50 Va 20 Hv 15 Hd 5 Cd 5 72 APPENDIX B. (continued) Harve de Grace Species Present Percent Cover Bed Vs CC3, DC3 Ms 65 Va 15-25 Hv 10 Hd 5 Cd 5 N I YC3 Ms 45 Cd 5 EC3, FC4 Va 40-60 Ms 10 LC4, NC2, MCI Ms 40-60 Va 25 Hv 10-20 Hd 5 Cd <5 N <1 KC4 (north half) Ms 30 Hv 50 KC4 (south half) Ms 20 Hv 60-70 OC4 Ms 60 Hv 10 Va 5 QC3 Ms 70-80 Va <5 Hv <1 RC3 Ms 80 Va 5 VC4, WC3 Ms 80 UC2 Ms Va Spesutie FA3 Ms Hv Cd 73 APPENDIX C TOPOGRAPHIC QUADRANGLES SHOWING THE DISTRIBUTION AND ABUNDANCE OF SAV (BOUNDARIES OF INDIVIDUAL SAV BEDS ARE DELINEATED BY SOLID LINES. EACH BED IS IDENTIFIED WITH A LETTER (A-Z) AND A NUMBER (1-4). THESE NUMBERS REPRESENT THE DENSITY CLASSIFICATION DISCUSSED IN THE TEXT AND FIG. 2, I.E., 1 <10%; 2 10-40%; 3 40-70%; 4 70-100%). 10 74 SUBMERGED AQUATIC VEGETATION 1986 2 A3 C A5 % A Ag -7. _L@_ F% 7 L ..A I-V ` T *Ground truth Provided by Stan Kollar of Htirford Connorunity College. See Appendix B for lpecle, present and percent cover. 1Z SPECIES SURVEY STATIONS Zm Z,-, mw,xa (eeIga5s) Hv Hydrilla verikillata (hydrilla) MD-DNR Survey Station Fin R@ppta xafitim, (widgeor, 9,ass) Hd He-thea dbi, (water stargrass) h ABERDEEN,MD M3 Mywphyllm spi- (Eurasian watennulfoil) Pcr Polamore- cfispus (curly ponaweed) mD Charter Boat Field Smey ftf P-.,,- ,[email protected] (,edh.ad-gr ... ) Cd Cealophyflum demesum (coonta,l) Citizens Field Observation 2 Ppc ftl,mcgelo, p-i-5 (satjo poutweed) PD. P.,...g.... (t0e,,de, P.,dw-adt ZP Zannkh,11, pal,-i, (horned pondweed) Ngu N-j-, -dal-,i, (Sluthem -iao) A VIMS Field Survey DATE FLOWN 919/86 N Nj,, pp. (naiad) Ngr Nja$ gac,11t., (naiad) EC Elodea c ... d-i, (conurcr, elodea) C CA- P. (...kgr ... U.S.G.S. Va V.11a-j. -6c.x. (wild celery) SCALE 1:24,GOO 10 75 SUBMERGED AQUATIC VEGETATION 1986 4 0 *Ground truth provided by Stan Kollar Of Hayford Community College. ts A See Appendix B for species Or ... nt and Percent cover. *SAV too Sparse to be detected from aerial Photography. Approx Innate location Of SAV provided by Stan Kollar .1 HfutIld CommUnit rd Community College. 41 rAA 3- it A4* (cs 7 A4 .3" N J( 'A YC3, CA gc L h Pp D 3- 3 pp .61 a" F 4 Ms, Cd tA W82 L C21 XB2 ie M5,C d Ms,Cd A Y ZB1 xc SC2 TC2 S uce Ms,Cd' VC4 r WC4 SPECIES SURVEY STATIONS Zm Zoitem arfina (eelgrass) HV Hydilla -U61141a (hydrifta) MD-DNR Suruey Station HAVRE R. R.Ppia nrorilime (.tdoeon giall.) Hd H11,-h- d.bi. (-W, slaig.l.) MS Alynfophyllum spica- (Eurasian vatenodoil) Pcr Pll,.,gel,. Cnp,j (curry ponchviled) MD Charter Boat Field Survey DE GRACE, MD P01! Pouonogewn Pelfolialu, (redhead-g,ass) Cd C11.1Vhyllrn de-I.. (.-rall) ritizens Field Obsemation 3 PPC P-o,-- peatrurr= (sago porldveed) PPU Pol-gelo. 1,,ill.$ (sklnler Pondweedl ZP Zosnkhefia palultris (horned pondvived) Ngu Naia, wdalWwis (southern naiad) AL VOAS Field Survey DATE FLOWN 9/9186 N Nor., pp. (naid) Ng, Naro, g-dlf- (naiad) U.S.G.S. EC Eloka co,ladrwij (consimcm elodea) C Cho,O sp. (Mskgrws) Va Vallisneri, urlerfco,ur (,ild celey) SCALE 1:24.000 o 0 -LO.Tl. 76 SUBMERGED AQUATIC VEGETATION 1986 1: 1. K K, K % FA3 03 A 4- EA Va DA3 H 4 A IA2 C 2 -j- BAi Nz M a, Va a AA2 ------------ Va v6i VO SPECIES SURVEY STATIONS Zrh z-'. -i.. (eelit-) HV Hydill, (hyd,illa) MD-DNR Survey Station NORTHEAST, Rm Rpp,. -a- (..dg..n Hd ffele-h- db'4 (-iter stargrass) Ms myrophyflm spicatum (Eurasuin atemmoil) Pcr P--- -vw (curly pond@eed) mD Charter Boat Field Survey MD pof P--g"- ",fh-, (,edhead-grass) Cd C-Ophyll- d--m (COonted) Citizens Field Observation pp@ P-mff- p-matux (ugo wndweed) PDU P-mge- p-ill,r (slender Mndweed) 4 Zp z-ich@li. p.l-fi@ (h.,ned pord-ed) NgU Nj,s g,,d,!,pe.... (southern npad) VMS Field Survey N IVj,, pp. (naiad) Ngr 1-1- p-11- (-ad) U.S.G.S. DATE FLOWN 9/9/86 k-T E A EC Elde, --de.jis (conwhon ebdea) C Ch- p, (rhuskgrass) Va Vffi-w mefi-, (-ld celery) SCALE 1:24,000 1 0 77 SUBMERGED AQUATIC VEGETATION 1986* 76' NOT FLOWN A 4. ka, > - L > L -7 q AIR 'A 0 j3EaDE ARMY CHEMICAL 1E.1T R lip 7 A.- "v - po A ce", 4z,@ ms,va W- T@ H--1 'p, G p ABERDEEN 01 IN H. -d j- SPECIES SURVEY STATIONS Zrn z@ (-1g,-) H@ HIdliff. -1611.1. (hldld.) MO-DNR Survey Station EDGEWOOD, MD R. RpH,, (.idg-. g,-) Hd Hete,-the,, dbj, (,Yaler stargrass) Ms Mvtophyll- spw- (Euras,a, atenn,doIl) PCr (curly mndYeed) mD Charter Boat Field SuNey 7 Pot Po-g-. p,,folia- (,edhead-grass) Cd Ceawpb0-d,-s- (coonrajo Citizens Field Obser,vation PPC p-m- (satio pndl-d) Ppu Piamge- p,,ill,, (slender po@eert) Zp Z-ichelia pal.-is (horned Mndeed) Ngu Vajaj g..dlve- (scx,the,n naiad) VIIAS Field Suiwey -NOT FLOWN N Vj,, pp. (naiad) Nqr k@,u n,cilfim, (rHiiad) U.S.G.S. Ec Erode, caade,ru I--- elodea) C Ch- sp. (muskgrass) Va Vflirena ,,dc=, M,ild Celer,) SCALE 1:24.000 0 78 SUBMERGED AQUATIC VEGETATION 1986 FA3* HAI m "k. it I N A N 1011AL --a,, q, WILDLIfE FUGE % IA 'j4 f-144 % II D1 0vI N: G 0 UkN Z x fill AA3 B.A 4, I D v I c c Ground truth provided by Stan Kollar of Harfout C....nfty 0Alppendlia B for ap@lar present and peater, cover. [an EA2 **SAV ms mc too sparsalto bt_difteroted front wial photogomphy. 'Approy4ma ter locat' a rov-ld@o y Stan Kollar 61 Hprford Co. R4 I V E R @@Av it b munity, Collegj. 4 SPECIES SURVEY STATIONS Zm Z-re. n@ (.1g...) Hv Hydill, -twill- (hydriltat) 1v1D-DNR Sui-vey, Station SPESUTIE, MD Rm Rppla mandma (widgeon grass) Hd H,-,A,. d.bia twater sitingrail.) Me Myriophyllwn spic- (Eurasian watemliffoil), Pcr Poi,-g-m ,i5pw (curty pondweed), MID Charter Boat Field Sumey 9 Pot P-fftmp-fofi,I,, (redhead-gmss) Cd Ceratophyllwn demersum (coortal) Citizens Field Obsemation PPC Potmjesom pecibuaw friago pondweed) PPU Pol-offe- p,,ilfw (slander pondweed) DATE FLOWN 919/86 Zp Zaaakheftia, pal-ris (horned pordweed) Ngu Naps g=dalvenji, (southem naiad) A VIIAS Field Survey N Arthas spp. (miad) Ngr Njm grcillim, (naiad) U.S.G.S. EC Eladea camatmis I(--- stories) C Ch- P. (-.kg-e) Va V.11i .. ria -H- (wild efery) SCALE 1:24.000 .1 0 79 SUBMERGED AQUATIC VEGETATION 1986 7 -J. 11 T N C 41 B.HEMI@ ---- ------------ A4 ms EA Va V @Va V c A,4 Al C. 'A. C, 1v S A S G R 0 V E. N E C 02 HA3 I FA a SPECIES SURVEY STATIONS Z. H@ MD-DNR Survey Slat- EARLEVILLE, MD Rm @wdgeongra- Hd fl, le, slarqrass) PAS %1, -ph,lh- ifivr-an PC, --e- MD Cha,ter Boat Field Survey 10 Pot 11,---- iredl-d-g-, Cd i. ..... (coolta.1) PDC (-9-10-edl PPU P@11,1-11-, is;e-1 -d-edl DATE FLOWN 919186 Zp 1--&b, (ho,red pond,eed) Ngu sowhe,-a.ad@ Citizens Field Observation VIMS Field Survey N ,r (-ad) Ng, EC (Co-elodea) c I usGs Va I . ... .. - 1,4d crie,y) SCALL i 2@ OGG 80 SUBMERGED AOUATIC VEGETATION 1986* -22"' 2"10' .R V -.N C K 4, I"f'-4 lp j \Y. c 4,Ec, c'. M d m A Ell 'Ms,ed y ms is.Cd ms.va 401% X, SPECIES SURVEY STATIONS Zm zo-m (eeiiiram) HV Hydrifla -kif4ata (hydrilla) MD-DNR Survey Station MIDDLE Rrn Rppio (.idg- was.) Hd He-hem dubia (water stargrass) MD Charter Boat Field Survey RIVER, MD Me Myriophyjl@ spko- (Eumajan watemiltoin Pc' P.,-o",- 'fi'p. (c.rly pon@lweed) pot P-oge@ erfouarus (reclhead-g-) Cd C-ophyll- d,-,,.- (coonWI) Citizens Field Observation 13 ppC p-.,... p.,(..,- (-W o..*-d) Pp. P-p- p.,W. (.Wdr vorch-W) A VIAIS Field SunPaY zp Zm*ke4fa palustris (horned Pordweed) Ngu N@yas w"uNnsjs (southern naiad) -NOT FLOWN N Nqf., Pp. Ngr N,., (naiad) UZ.G.S. EC Eld,, c-d-i, (@ elodea) C Ch-p. (.uekg-.t Va Kaffisnefia americana (wild celery) SCALE 0T.24.0W 0 81 SUBMERGED AQUATIC VEGETATION 1986 * 39@ 22 3 -61. _1 1 4130- 39- S'Cd, C VQ,Cd m C' ,.jpr d #A V I @' __. - _2@ ... . . -@' Cd 0 m 61d r Val, 0 -\N. A E R 14 S,Cd,EA.Cd Ec 7@ Ai@ _, Eq. Ms y - - 7 lp *ms % m _'-P@ R V MkjCdjVa 'R 0- _N D I&IIII.V01c lp 8, a -T Ilk 0. ms Va me'va a 7. Me, P:@ /;01 IS A K pp 'Cd C H'- E S A P E E B A y NOT FLOV(C"') SPECIES SURVEY STATICINS ZM Zrfen, erafina (celgrass) Hv HdH11, -icillei, (hydr,fta) MD-DNR Survey Station GUNPOWDER Rm Rpp,, --- (wogeon wass) Hd H--rh- db,, r@ee( strgrass) MS @p.el.m (E.I.... ...-Morn PCr p--g,- nspus (curly pond%eed) mD Charter Boat Field Survey NECK, MD Pot P.,...,-n pefh,f.$ (redhead.g,ass) Cd C,,(,ph,11- d,.e,,.m (cocnta@l) Citizens Field Observation Ppc P--ffe- peen..t., (saW eand,ced) Ppu P-,ge- (slender oond,,,eed) 14 Zp Z-xh,fi, paluitru, (lerned vondweed) Ngu N@epadalpe-s (Southernnarad) A VINIS Field Survey N Nj.s @pp. (-..d) Ngr Ij- (n..d) U.S.G.S -NOT FLOWN Ec Efde, c ... d,.,i, (coree,on elodea) C Cher,, sp. (nr,skgrass) Va 9 11,-n. men... (@fld celery) SCALE 124.000 A SUBMERGED AQUATIC VEGETATION 1986 '*@ERDEEW No tz MIL RE@- AT17 W4 a 4 4 4 4 4 4@ 4 CA2 4 x4f 4 4 /4 "N A3 D kA, d 4 4 EA4 FA4 Z qJA2, GA3 HAZ Y./" 4 4 r 4 'c MS,Ppc --.v SPECIES SURVEY STATIONS Zm Z-,-- nafi.- Hv Hydill. -neffll. (hydinlia) MD-DNR SuNey Station HANESVILLE, MD Rm Rwpia ma@lima (widgeon grass) Hd ... dbi. (-Wr atanworra) MS Mymphylf@ vk- (Eurasian watemiffoil) Por Pw-g-n ,ip. (.u,ly pon@ead) MD Charter Boat Field Sumey 15 Pot Polonrogemm pefofia- iredhead-orass) Cd C-ophyllum dem-m (coornad) Ciluens Field Observation PPC P-morelon Perrin- (saoo pondweed) POU P-1-wo. P.,ri&, (.W-dr panch-cf) I nakhelfa patusifix (horned pond-cf), Ngu Nqias sadalvenjis (@thern naiad) A vus Fmid sumey DATE FLOWN 9/13/86 N Nj,, pp. (naiad) Ngr Njm mcd1ima (naiad) U.S.G.S. Ec Elodea caaadensis (cornrnon elodes) C Ch.,ap. (-.kg-a) Va Valli-ri, -ricana (,ild celery) SCALE 1:24,ODO 1 0 83 SUBMERGED AQUATIC VEGETATION 1986 SA..$ S F' ftj A' S R Ai J- Is 10 4;,, FA,2 GAI HA3' ms or AA2 0 -&A.4 T-cl A OA4 tAlt SPECIES SURVEY STATIONS Z. Z,,- --m. laalg-) HV jq@,dfifl. -firdlaw fhydalla) MD-DNR Su,ey Station BETTERTON, MD RM Rppia ma,,ti- (widgeon grass) Hd H,,,-,h... db,. (-te, atalgl-) Ms Afwphyfl,m pir- (E-sia. -te-tfcil) Pcr Poi-g-, ,,V,, (curly mncMeed) MD Charter Boat Field S-ey 16 Pot P,wm,,eto, p,,fh,tw J,edhead-g-s) Cd C,,-phW1.m d-... (.-nt,,]) Citizens Field Observation PpC (sag. mn&.-d) Ppu Pt,mog,,,. p.,ills (slerciar ponfteed) DATE FLOWN 919186 Zp Z-richeh, (ho,red Mndeed) Ngu g.,dlpew, IS.then n.md) VIKAS Field Survey N Vj,s pp, (m,ad) Ng, p-11- (-.d) U.&GS. EC Efdea c ... d .. i, (-n elodea) C Ch- rp. (m,skg,ass) Va Vfli-6. -efi... (,,Id celery) SCALE 124,000 84 SUBMERGED AQUATIC VEGETATION 1986 .4- Tlil- DA4 CA2 t N r SPECIES SURVEY STATHAS Zm Zo- marina teeigninis) HV HYdilla -swill- 4hydrila) MD-DNR Sunrey Station GALENA, MD RM Ruppia madalma (wiftson grass) Hd HI-lh,. dbia (-tar starga,s) I Me Myriophyllam spic- (Eumalan watermlifaii) PC, P.-ge- m'p. touly wndweed) MD Charter Boat Field Survey 17 PLO Poramoplonperfohalw (redhead-gras,5) Cd Cl-phyllam d,.,r,.. (-Wl) I : Citizens Field Obsemation PPC Pot-sewn pectinata; (sago pondweed) PPU Polamogeron pusillas (slander pondweed) DATE FLOWN 9/9186 ZP Zawkhelfa palujids (horned pondneedi N9u NVas rwda1,p,n.tij (san,thern naiad) VRAS Field Survey N Nai., pp. (naied) Ngr Naj-jr-illima (naiad) Ec Elodra canimiewis (cormon ebdea) C Chara rp. (-.kgra) U.S.G.S. Va VaUfmefi, amenicam: (wild calory) SCALE 1.24.000 o o K-Tr. 85 SUBMERGED AQUATIC VEGETATION 1986' "Va. m x f I Jk y @71 2@. -F- ffi-nl 17 Ze 0 77 No SAV detected on atria[ photography. SPECIES SURVEY STATIONS Z. Z.-- -in. (ealgr.as) Hv 1h&,11, illat, (hydnfta) MD-DNR Survey Station SPARROWS POINT, RM Rpp,, rr-urna (widgeon grass) Hd He-arth... d.b,. @wate, staroniss) Ms Al-aphyll- spir-. (Eumson atemwol) Pcr Poiamegeton -spus (curly DoncMeed) MD Charter Boat Field Suryey MD 19 PDf P-rrrg-n pef,1-us (redhead-grass) Cd C-wh,11-deme-m (coonta,10 Citizens Field Obseryation PpC Prt-ge- peclina- (sago mhd@) Ppu P.-rge- (slandor ne.dw.ed) ZP Za-cheft, p,f-fis (horned dondweed) Ngu \M,sg,,d,!,p,,s,s (Scuther-amd) A VINIS Field Survey DATE FLOWN 9113186 VIM Mt ,f-k N ve,- pp. (nanid) Ngr %,j,5,wm1- (na,ad) Ec Einde. --dersi, (corhrnon elodea) C Chaa p (mskg,ass) U.S.G.S. Va Valh-H. mefia- (w,W celery) SCALE 124.000 1 0 86 SUBMERGED AQUATIP VEGETATION 1986 7. d) 6 H A P E A K 'E y ---I- @AYI@ IcF 18 10 CA AA2 0- N) GAI R. 1k L SPECIES SURVEY STATIONS Z. Z..... . . (eelg'...) HV Hydfll, (hyddl,) MD-DNR Survey station SWAN POINT, MID Rm Rwpi, m-nim, (widgeon grass) Hd H--h- dbi. (water I NIS Myriophyllum spicalm (Eurasian watemilfool) Pcr Pfaogelo, c6sp,s (curly pondweed) MID Charter Boat Field Survey 20 Pot P,-,g,-p,,ffia- (,edhead-grass) Cd Ceafphyll- de,e-m (coonta,l) Citizens Field Observation PPC Pomoge- pectira- (sago pondweed) PPU Polamge- p-Hus (serder pondweed) DATE FLOWN 9/13/86 Z Zar,kheh, pal-fis thorned Wndweed) Ngu Vajas guadalupemi, (southern naiad) VtKAS Field Survey p N Nj., @pp. (n.,ad) Ngr N@a, g-dim (na,ad) U.S.G.S. E. El@d,. -ad-i, (,-. elod..) C Ch,,,,p. (,uskg,ass) Va Vffis-m meri-d (wild celery) SCALE 1:24,000 o o 1.11-TIa 87 SUBMERGED AQUATIC VEGETATION 1986 N, $ .vif ..... - ----- 9 0 a 0 -/ Lil . . .. . ........ 0 of SPECIES SURVEY STATIONS Z. Z.,- .=fa. Hv Hydilta-fiedlaw oryorata) NID-DNR Sumey Station ROCK R. RWpi. -61m. (-Wg- 9-a-) Hd H-k- d.W. (-.1 atargr-a) MD Charter Boat Field Survey Nis Myi@hyllm spica- (Eu-m -W-064 PCr Potamage- c-pw @@ead) HALL, MD Pot P-jr,- [email protected] (redhead-g-0 Cd ce-,phylf- d--um (c-aad) Citizens Field Obselvation 21 Ppc po-geta. pec-as (sago pondeed) Ppu Pot,mag-. p,,r11w (slender wnfteed) Zp Zmwhelia palslri@ (horned mndweed) Ngu Vaja, gwdafV,,- (@thern naiad) VINiS Field Sumey DATE FLOWN 9113/06 N Nj., pp. (..d) Ng, iv@j., (n.,ad) LIS.G.S. E@ Ekde. -d-u (- elodea) C Ch... V. (-.kgr-a) Va Vffu-i@ -Hcaaa (@ald cele,y) SCALE.1:24,000 88 SUBMERGED AQUATIC VEGETATION 1986 I 27@ P V1 m 0 Ile ...... Glaso. A 0 T Zp C/ Mj P IT R. ?,T T- o 2 SPECIES SURVEY STATIONS Zm Zo-m -ina (eelgrass) Hv Hydrilla --ft- (hydnlla) 0 MD-DNR Survey Station GIBSON Rm Rppia -wm, (widgeon 9,ass) Hd d.b,a (-t., M,g-) MS Myilphyll.. @pwal- (Eul-n -W-11.4) Per P-.ogo- up,, (curly po,dweed) N MD Charter Boat Field Smey ISLAND, MD Pelf Pw-ffll- p-fM.- (,adhaad-gralls) Cd Cerarophyllum dem-m (coont0d) Citizens Field Obse@ation Poe P-MIff-, pectmar. (sago pc@elIldl) PPU P-.1gelo, p.,ill- (slender wnd_ed) 24 Zp Z-ichefia pal-ri,, (ho-d oc,ndweed) Ngu Vj- g-d.I--,, (SlIther, ra,ad) VIMS Field Sur,ley N Nj,, spp (nalad) Ngr N.,- gr-M.. (.a,.d) U.S.G.S. DATE FLOWN 9/13/86 Ec El,dfa ca-d-u (comrron elodea) C Ch.14 sp. (,,skg,ass) Va Valli-fi, -rie... (,ild celery) SCALE 1:24,000 89 SUBMERGED AQUATIC VEGETATION 1986 I I- .. -:r=. .. - . --1, 11 7 A3 + 4 GA4 rpT D FA U .......... Rm. HA q, % TD2 + Ep p p f4-. 2 O-JA Ppf, Rm C--- D. OD. N ...... ;,Z FD4 GD2 - E3 4" ITE 2- NO, R C3 f c A I X C4 Vc ca N, E Ppf, Rm - WC3 KD L n SPANI 2 Pp Rm E c e,6 C2 m,pj c P f,R R m ppt OC3 3 pp? .............. A 2 te cl K E 3 f . ...... n@ SAI PA Bc TA9 LE4 B @j 3 T WA3 D m VA2 A5--T- YA2 Vag E12 T B 3 t 3 SBk,\ RBA" 4 EA S I a- I . 93 F A S 60 A IN DLB N vt@ at\ 1 3 3- r p Gat Pf 04 E3 Ppf m H.1 N OE2 RMIP I /I A SPECIES SURVEY STATIONS z. z.- (-Ig.ss) Hv HId,111, (hyd,,11,) MD-DNR Survey Station LANGFORD Fun Rpp,, -nti.. (,vidgeon gn,,s) Hd H--Ih- d.b,. (-fr iiisrg,-) M$ M-,phyll- @i-- (E-s- P., p-."'.. "".@ (-,,, oon@ssd) MDCharter Boat Field Survey CREEK,MD Pot P-.1-1 (l.dh..d-,ras.) Cd C-,.ph@11- d-,- (-,ta,l) Citizens Field Observation P C PD-@-. P111-1 (@W Mn@veed) PPu P,--l- P-s,tl,, (sleMe, zord,vee,J), Zpp Z-whdi. p.f.-!, (WIned pord.eed) Nqu (so,thernnaiac) A VIMS Field Survey 26 N 1111h Saia, pp. (na,a,J) Ngr A.I., g-0- (,a,ad) Ec Eld,, -d-i, (- elodea) C Chaa sp. (musk9rass) U.&G.S. DATE FLOWN 9/13/136 V- "Wh-- -w- (v,11d -1e,,) SCALE 1:24,000 90 d1b, SUBMERGED AQUATIC VEGETATION 1986 76- 3977@'Z lip A, 0 w Z' C 0 N C, d 31 7 7V97 o' V 7V 7V SPECIES SURVEY STATIONS Zrn Zrl- 10nill (aalgla-) HV Hydfill, -wilf- thyd,flla) MD-DNR survey Station CENTREVILLE, MD Rm Rppia m,rilima (widgeOl graSS) Hd Hel-h- Abia (Water staromes) Ms Myriophyllum Vice--- (Eu-m Pcr Peta-g-, crisp@ (cuoy po,dweed) MD Cha , goat Field Survey 27 Pot P-..g-p,,ffi.- (radir-d-grall.) Cd Cearophyllm deme-. (coonlao CitizenSrFiield Observation Ppc P,-fferon p-m-, (wgo mnclwmd) PpU Pola-ge- p-dl- (slander ponclWeed) DATE FLOWN 919186 zp Zomih,fia palmstris (horned oordWeed) Ngu Nj,, g-dolVe-i, (Southern naiad) VIMS Field Survey N Nj,, sap. (naiad) Ngr Najas gacdlima (naiad) U.S.G.S. EC Ekd- --de-sis (-n elodea) C Cha. @p, (muskg,aas) Va Vajlj,-ia amedan, (w,ld celery) SCALE 1:24.000 1 0 91 SUBMERGED AQUATIC VEGETATION 1986' rK E, Hoek. @PO 1@ J1 .4- 1@ 51w- - _7 C P. G b. Wdi.A Ul* V; WTI' 0 see 5@1 X* C. 13-iff SPECIES SURVEY STA71ONS Z. Z-_ meirs (selgraes) Hv Hydnil. -1kill- (hydrilla) MD-DNR Survey Station SOUTH RIVER, MID Fun Rwpla @Eafitma (widgacn, grass) Hd Hei-them dbi, (water wargrass) Ms MyHophyll- pic- (Eurasian waienriffoill Pcr Pot=,,eto, cnipas (curty pondweed) MID Charter Boat Field Survey plot FE-g- ptfoli-, (redhead-grass) Cd cemiphyll@ dmemm (coomail) Citi.ens Field Observation 30 PPC P-morewn ptcd-w (se0c, Pondweed) PPU Po-ogelon pusd1w (slender p-Weed) ZP Z-1cheff, plujiis (homed ponchweed) Ngu Nqias gwdalupewu (southem najad@ VFAS Field Survey DATE FLOWN 9113/86 N Nj., pp. maied) Nqr Nua, I .. iffi- (naiad) US.GS. Ec Fdodea canad-is (conwhon eiodea) C Ch-p. (-akg-e) Va valli-io -i- (wid celery) SCALE 1:24,000 No SAV detected w aerial photography. .1 o 92 SUBMERGED AQUATIC VEGETATION 1986 U I"A' A ma kA 3 "T, .... .. . . Hi am ma .Ppc - 4tr SPECIES SURVEY STATIONS Zm zoslera marina (selglass) Hy MVddlla -ficifl- (hydrilla) MD-DNR Survey Station ANNAPOLIS, RM Rppi, -num, (widgeon grass) Hd He-ath- dbia (@ter SlarQrss5) MS Myriophyllum spicansa (Eur..in vat.-iftl) PCr P01-9-1 cisp,s (curly pand-ed) mD Charter Boat Field Survey MD Pot perfoli-, (redhead.g,ass) Cd Ce-ophyll- de-su, (coorlad) Citaens Field Observation PPC Fowmogelon pecda-, (sago pord@vsed) PPU Pof-oge- p,,ill,, (slede, Wnfteed) 31 ZP Zanakh,li, p,l-fi, (horned cond,veed) Ngu Valas guadalwnsu (southern naiad) VIMS Field Survey ItlfflAk N Nam spp. (naiad) Ngr N,,,s g-dli- (na,ad) U.S.G.S. DATE FLOWN 9113186 Ec Eladea canad-is (-n sweet C Char, sp. (muskgrass) Va Vagis-6, a-i-, (w,ld celery) SCALE 1:24,000 1 0 1 0 93 .SUBMERGED AQUATIC VEGETATION 1986 HA3* a j.I IA4 AA4 JA3 -poc BA4 P A 3 0 4 PA3 Ppf Al r 3 0 3 % CAZ 4 RM: -AS % Rm ft"! - SA3 M84: R %B4 2 LB K C-k 4 VA2 AB4 DB Rm K N T I s L ru c B Rm,Z P. R B A T T S WA4---.-. aA 3 R E HB3 m,m$ FA4 KA4 PC LA3 Rm Rm C R Al B A L L F Y M,ZP F82 B A Y m-@Zp Rm G84 Z P IS R m XA3 Rm E A s T E R N B A y Rm 7' SPECIES SURVEY STATIONS Zm Zov- -ina (eelgrass) Hv 11@,dilf, -wullut. (hydr,lia) MD-DNR survey Station KENTISLAND, Rm R.Ppia mofilima (widgeo, g,ass) Hd Hei-th... db,, (-iter stargmss) MS Mviophyllum spica- (E-suin -1-0o,l) Pcr P--,-.,-pu, (-ly p..d..ed) MD Charter Boat Field Sulwey MD IAm Pot Pw-ge- pefolia... ftedheac-g,ass) Cd C,,,uur,hw-f1.m demerjum (coo,taul) Citizens Field Observation Ppc P ... -g- p-m-, (silgo pondweed) Ppu Pfam,@-n p.,ill., (slence, Mrc-ied) Zp Z-wheli, p,1u-i, (horned loordweed) Ngu Vj,, ,,dip,,,,, (southern naiad) VIMS Field Survey 32 N Vj,,,pp. (naiad) Ngr N,,a, g,,c,lhm. (..,ad) US.GS@ Ec ElMea -ade,uii@ (o-nion elodea) C Ch- p. (,uskg,ass) DATE FLOWN 6/25186 Va V.11j,-i. -6-- (- -le,,) SCALE 124,000 0 94 SUBMERGED AQUATIC VEGE7ATION 1986 BA3 AA2 HA2 A4 IF R 1A1 Zp SAI& JAI RA2 L KA3 OAI TA4 rasonville. A3 Z:i Z-. .6 Z A I P R 0 S P S C T XA4 c:@) + To JB4 IB KB2 _7 L82 gs ,a C) MB2 WYE a. E A S T E R N or. B83 B A y I= CB3 E 11 YA3 DB3 FBZ W Y 5 _R B3. 692 76- SPECIES SURVEY STATIONS Z. Z.111. -ma (.lgaal) H`v Hdilla ... icill- (hydnll.) MO-DNR Survey Station QUEENSTOWN, Rm Ruppia mafilima (widgeon grass) Hcl H--lh ... ofbm (-wr warglass) Ms Myriophyllum spicatum, (EL-un -tharriftig Pcr P,t-g-, (curly pondwe.d) MD Charter Boat Field Survey MD Pot Po-ege- perfolm- (redhead-grass) Cd C-inphyll- dm,,,,. (coonta,l) Citizens Field Obser,ration Ppc Ma-gelo, p-m-, (sago ponchIeed) Foul P,-og-n p-11- (slender penchveed) 33 Z 1-ich,lia p.1-1,u, (horneel pondveed) Nqu g,,odu1W- (southern read) VIMS Field Survey N Nj. pp. (naiad) NQr No,,Ls .calm. (n.l.d) U.S.Gs. DATE FLOWN 6125/86 Ec Elodea canadensis (cmmn stories) C Ch... sp. (nuakg-E) Va V.11i ... i, -Hcan, (mld celery) SCALE 1:24,000 0 -LE o --1. 95 TION 1986 SUBMERGED AQUATIC VEGETA a P yg- d, i T 27 arm @ 01 as 2 VY YAF > 0 Station ok mill 0 Cwlt Course 5 A'@ 3 -08 0 Ms Hd Ilk- Vaj@V,M$ Hd 'X 20 C) C., Gravelly Point Hy 51@ E A,1CI oa oa za a. 4 p .10 *x; Greente"I 4@ Rim e ,e . @p 7 ? . /19 41 MA _6 VS,torsCe Par 21 Hairl Point U S NAVAL !lq 4 'A A, j 0 ST "al '0 A IN GTON 'q Boll ST E N A T VU N A 1, AIRPORT e, -10 TO 11 Gg*2ro Va a, @3 aTH f safte Ak@: t alla 00 Ig 'o rt k r fah d r ia I G 4i@' < 9,h -7 A@St I&As &h E -113 AVE 3 Ft C Wa h,ngto, Sal M.W. FEW Yacht .,a, Basin Watlli,lek ' 8@- C,-' ttage 'a ght Hit Elmo A@-p 4, 9 0@- AVE Q: FA2 L'br 'y ID Y! 'CA.c mn ;,,'I ANACKI"I ;A A sa, Ft blij 74 t ?9 @e U cc) L ght 9A t 4 VAT 014 /j J1 75,@ 4 1 cS R S, m NAV 0 S @@- J@E0 RESEARCII LABUOSRATO 't4 @h,- I' NT -E qc@ LN ftq. a I -:,. ate :11 L x Va PoSa 4A aw Shephe@ s V ia at Lan .1 1 J ar ury Ell ILQ Hit 1s,H PI ge .AS 'o..e@q I r Sr, HAA \j, If 'Rnti rin-F, 116"Alil hit SPECIES SURVEY STATIONS ZM Zav- irtarin, (esignass) Hv Hdill. -Ixiffal. (hydrilla) IV10-DNR Survey Station ALEXANDRIA, VA-MD Rm Rappi, (,idgeon grass) Hd H,renaarhera dabs, (water staripass) IVIS Myrfophyllarr spicaaa,, (Eurasian watemilloil) Pcr Pwaalogeton ipas (curty oorahiead) MID Charter Scat Field Survey Pot Pormall-, pl,,falma, (redhead-grass) C4 C-taphyll- d--, (Coortm) Citizens Field Obsemation Northeast Quarter PPC Pa-ageto. pecorul (sago ponoweed) Ppu Po,...g,,a. p..11., (.lend., ,ondweed) Zp Zoeuch,li, p,lavfi, (horned pord-ed) Ngu So,. airdajp-j, (southern naried) A WAS Field Survey 34 NNj., ,pp@ (nauaa) Ngr No,., -Illirra (rallied) U.S.G.S. Ec Elodea carademis (oonvinion elooll C Chaia sp. (Mskgms) Va Valli ... zo -icaa, (wild celery) SCALE 1:12,000 DATE FLOWN 10/16186 .1 0 -10-1. 96 all SUBMERGED AQUATIC VEGETATION 1986 4,. 3 Hv AB IP ZA UA2 B03 42 YA2 ES3 TAI V, I x vi GB4 d.V Fo Ferry QA@ 71 4@ PA L -j ra 12 V,Cd t rIE OA2 191 III "AL Hv, d,Ms, HB4 INTFIRCHAN, @1 J- WAISTIO Va, d,N KB% 000ROW .1 a -0- a put 4 + 1-133 9 R On- Port 164 SB4 LAI JI34 11i Hv +-Hv. Hd, ma, V 0, M.- ountry Cluh F84 HA4 10 Hv, C. dMBI 0 @2 1dP. IA4 NB2 y 01 Ir 4 15 2Hd,Vd- Rr c Hill, Cd or e W,'A I e xa n d ifaV RBI GA4' Hv,M$,Va m 156 V W R.. @, FA4 A4 DA4 bgh Q L 941@ Milli it H Cd,Hv e 011@ "t rov RZ I o c te Oa To,e A: Bli 7 "a ;is J 114 0 La Hv,Ms,Hd,'Cd 00, Val, No 3 174 Af CA4 Indian Lie 'a Ell BA 't@o j - L -a P82 1 stand ftllw" t I% A 4 3 1 _j SPECIES SURVEY STATIONS Zm Zostem mama (eelgrall Hv Hydill. -U61M. (hydrdle) MD-DNR Survey Station ALEXANDRIA, VA-MD Rm Rppi. -W- (,idgeo, grass) Hd H--h- dbi,, (@ater targ,ass) Me Afy,iophyll- jpic- (Eurasian -emiffoil Pcr P--ger. ,ip,, (curly pon",ed) MD Charter Boat Field Survey Southeast Quarter Pat F.-g-. p,[email protected] (ledhad-gl..) Cd Ce,,uophyll@ demersum (coontasl) Citizens Field Observation POC P-lojef- p-m- (segO POndweed) Ppu Po-oge- p,sift, (slender @"eed) 34 Zp 7 .. khli, p.f-fi, ft-d Wr,d-d) Ng. Nj., g-d,,J@.... (a.uth.rn -i.d) VIMS Field Survey N Sqi- @pp. (ra..d) Ngr Nj,, (naiad) U.S.G.S. DATE FLOWN 10/16/80 Ec Elode . .... d-u (cw- elodria) C Chara sp. (muskgmss) Va Valli, .. i. -i... (Mild celery) SCALE 1:12.000 a I -O.E- 97 SUBMERGED AQUATIC VEGETATION 1986 "ni DA3, c z c Zp -..t. A A.@2 7 vl n.. h A; V ol, SPECIES SURVEY STATIONS DEALE, MD Zm Zosam marina (ftlg-) Hv Hydrilla crikiMaw (hydrilla) MD-DNR Suriey Station R. Rapl. dllia (.idg- 9-1) Hd ff-ranthera dubia lwatar stargraw) Me Myrjophyli@ spicalum (Eu-ian @aunmtlloil) PCr P-mogejon crisp@ (curly pdrd@aed) MD Charter Boat Field SutveY 35 Pot Ptamo,-. p,folia- (redheac-grass) Cd C,,alphyll. dem-m (cwmail) Citi.ers Field Observation DATE FLOWN 9113186 Poc Poramogew pectina- (sago dond,,need) Ppu Mam,geio, p,,iUw (sl8ndar Pondweed) Zp Zannichelia ;a1us,ij (horned pond-c!) Ngu A'djas uadalupensij (Southern naiad) A VRAS Field Su,,ney N Naj- , (-iad) Ngr Naja, t-111ma (naiad) US.G.S. Ec Elodea -adeasis (comrnon elodea) C Ch-p. (-.kgr.a) Va Vfhwia -ican, (vrild celery) SCALE 1.24,ODD 0 .1 0 98 SUBMERGED AQUATIC VEGETATION 1986 Rm,Zp K E N T A o '0 R A A.4 Rm,Zp R m CAC FA3 8 m, p R m BA2 GAZ HA3 A4 EA3 Rm,Zp R KA3 JA3 A3 m -R LAI SAI 44 01A,3 JJA2 PAI 0@ r.; 083 dl," MBI P B3 ......... .. 84 0B 1 4 VA2 + 4/ 42 K.. FO R B . .......... .. . 4r '.S ..% 4, WA t ... TO H64 U03 ZA B2@ V03 c- W 2 XAZ -'x A? P.'9- Hark- ZB2 YA3 .............. J. SPECIES SURVEY STATIONS Zm Z.'r- -b. (seloniss) HV HydH11--k&,w (hydrilla) 0 MD-DNR Suryey Station CLAIBORNE, RM Rwpi, madtima (widgeon grass) Hd Hem-hera dubla (water stargrass) 0 WO Charter Boat Field Survey NIS Myriophyllm spicaumn (Eumian watemilldl) PCr Pof-ff- rispw (curly poridweed) MD Pot Pora-gam p,rfofi-, (redhead-gms) C4 C-ophyil@ d,,,,s,m (coontail) 0 Citizens Field Obsenration PPc Pormosew pecibmw (saX pordweed) Piou Po-orerm pusillw (slerder pordweed) ZP Zamkhefia ;:jtrij (horned pondwead) NgU Najm jwdalu, .. i, (southern naiad) A VIMS Field Survey 36 N Naj-pp. (.led) Nigr Njw gwilli- (naiad) U.S.G.S. DATE FLOWN 6125/86 EC Eledea -akwU (corninon ebdm) C Ch-p. (mskgrws) Va VaW-H. @- (wild celery) SCALE 1:24,000 .5 .1 o 99 SUBMERGED AQUATIC VEGETATION 1986 A, D - X A@ -'@OA4/ EA *1 11 A D E A S T El R N 2 ""'L A3 ----------- t"e@ A3 GA4 A4 N 3-- B A yl r @@ 'G s-,- "_ w 2 RA2 @tA3 a- SH,i HA p 3 Rm 0A 2 SA2 A3 V 2 YA4 ZA3 -AB3 x 8B4 + W83 ------- c-1 X84 X FB4,, V813 R 84 Rm C -S84 U Rm R R 4 L 083 CE13 B OB2 N 8-3- M02 ....... Y9 Al Rm ZB4 L 0 GB3 Rm AC3 .:'Rm KB3 c, Rm H83 Ail.l.". -Rm Zp is R SPECIES SURVEY STATIONS Zm z-- -i- (eelgrass) HV Hydilf, -ciflaua hydrilla) IvID-DNR Survey Station ST. MICHAELS, Rm Rppil -iluna (Milgeon g,ass) Hd He-ihe,a dubi, (water stargrass) Ms %,r, riophyllum spicalul (Eurasian watermilfoil) Pcr p--@,- ispus (curly pondweed) MID Charter Boat Field Survey MD 37 Pot P-morefoapefoli,111 (,edhead-grass) Cd Ce,-phWl- de-11- Citizens Field Observation Ppc P,-og,io, p-uia- (sago pandweed) Ppu Poi-oge- p-11.s (sleMer ciondweed) Zp Z .. @helm palus,i, (@rned -rd.ead) Ngu (Scuthern naiad) A VIMS Field Survey DATE FLOWN 6125/86 N Vj.s spa. (natad) Ngr Na,.@ -dt- (-.d) U.S.G.S@ Ec El,,de. -adensis (convnon elodea) c Ch- p. (mu,skgrass) Va Vlli-i, -i-a (wild celery) SCALE 0124.000 .11, 100 SUBMERGED AQUATIC VEGETATION 1986 01 Cedar Grove C Pilin -Pile jPiling .... C ---- W1. -.1 ---------- - % Z BeIv IF ts BA y 3 % 4 rave Va 6, Piles%. "e.; A ., .1 1 so Hv jo Ay A or, n 5 Hv e ell AA4v it st' e* A 0 Point 1 4- CA4 a 7 Co. Pile Ch IMS 0- Gnaton 7 +_3 0 1 12 a n Mtseo 20 26 M&,Hv P' ng Ms,Hv,Va,Cd,Hd,P r4 FXB@- @12 2 1 7 at n 5 M8 Rd A G H -a- 0 N S 25 TA4 H I in Pt a 3 JA2 3 M a ebb XAZ' to 2 -.1 60-11 Pileo lesend SPECIES SURVEY STATIONS Z. Z arm. (ee1g,.a.) Hv lfydilla -ticiflat. (hydrilla) 0 MD-ONR Survey Station FORT BELVOIR, VA-MD RM R,,ppi, meilima (,idgeon grass) Hot Hf-rhe,, dbi, (water stapgrass) I IVIS Myiphyll,, pi- (Eurasian watemiffoil) Pcr PI-Iffell, irpw (-rty pondweed) N MD Charter Boat Field Survey Southeast Quarter Pol P,,,:,rget,, p,,ffi-, (redhead-grass) Go Ce.10phyll- dem-un, (cont.,J) Citizens Field Observation P P@, noge- pectin.l., (.ago pndweed) Poo P,fannege- p@sill,, (slender ,ondweed) Zpc 39 P Z-hh,1j, (horned oondweed) Ngu Nj,, geed&@-i, (s-them naiad) VIMS Field S.rvey N Naps spp. (naiad) Ngr NI,, -11- (naiad) U'S.G.S. DATE FLOWN 9114186 Ec El- -d-i, (cornnnon elodea) C Ch- p. (nn.Agraes) Va V,111,,,,i, ,,,i... (wild celary) SCALE 1:12,000 0 _4-E 0 101 SUBMERGED AQUATIC VEGETATION 1986 S Hv,Ms.Hd,Cd, a 3 Uw C -T.d armony d g,Hd, "ilia Hill, 14$.Jid, Cd EB4 FB % Hulks Qw. C d, kd, Va. N, N 9 1,- 7 'Arcturu 32 EB4 4 Ji .7 II'V H@ 9d'.4 a' IC 35 17 '11ingwoo Srmwden Hv,,Hd,Va AA4 38 x N.., h Hv,Va,Ms,Hd Z A i1A 4 - y \vrlwn Hv,Ms,Hd,Cd VAI Mv,M*,Hd,Cd V B4Rivervie U TA3 81 SA4 CB 2 . .... ... SA2 P-, HV*.c -1;i'Hd,M9 JOA2 Hv,Ms,Cd,Va, 3 4. OA H Va H 3 H 2 .DA1 CAI Hv Cd,@s,Hd.@Iillg ZEA 2 H M 3 NJ @"'M A 4 H Y, C d, M s, d, N 9 HAI 8 LA2 Hv, *,C-d HY,Ms,Hd,v 33 3 Hv Ng Cd 4 3@ @d, JA4 1AZ GA4 Hv,Cd,Ng 5 C KA3 HSI Hv,M Va, GA4 Hv, Hd, Hd a, t- Ms,Va,Cd,N u Hv,Ms,Cd,Ng vert@ anor SPECIES SURVEY STATIONS MT.VERNON, Zan Z-11. (eeignuis) Hv H)d,illa-icifl- (hydrilia) IvID-DNR survey station VA-MD Ran Rpp,, -jIm. fividgeon P-) Hd H-lb- d-bl- f-hil Ms ipica- (Eurasian watenniffoil) pct P--g,,ar cnp.r (curly pandi,eed) MD Charter Boat Field Survey pot pvt ... g,j- pefli-i (redhead-g,ass) Cd C,-,phytlu. de-rs- 4-nlaii) Citizens Field Observation Northeast Quarter Ppc P,-,- pe,-.- (sag. os@) Pot, P-r- islar@r pondweed) A VINIS Fieldsurvity 40 Zp Za-ichdw pal,-i, inarred loo,ol.sed) Ngu Va., g..mp,.- (southern ,,ad) N (aliad) Ngr Sin., g-difin, (naiad) U.S.G.S. Ec Eld,. innud-fil (civanion ekida) C Ch- sp. (muskgrass) DATE FLOWN 9114186 Va V,14,-m -icaii. (,,W elery) SCALE'l.12.000 102 SUBMERGED AQUATIC VEGETATION 1986 Hybla Valley -v Ih. . 0 Mt Vernon oods -'W-p A. is Drew Sniith Sch X "p, ..X @'s ew % :'Newt,,n' W 01AI Illy Woodley Hills 1; 1084 oil 4- '@Stllaafi,rd B# lAndiviv W.M1,,y H i I IsS 'ch AB4 ......... ZA4 E t fultil .'Yol(al Hosle% Hill ........ Chapel Ms,Hd Cd, YA.11@ .7 Ms,Hv,C -@'M& Hy tU@k 2 A4 Nl,iun lin Hv,M'Z6d,Hd-- LOU' 3 RAI PA4 OAZ 9 HV,Ms,Cd,kd,N Va' N VAI - 42 H mA _I WA2 v d As 3 LA4 0 MsN%L,VqCd IA3 30 Is R6 14- C kA 41t iWDA3 e'vatimd,N.No JB4 E84 ms Po HA4 23 27 ffms MS EA 2 \M*j H d, Cd MqHv Cd V 16 16 HB4 13 D82 7, FB3 G52- a N SPECIES SURVEY STATIONS MT.VERNON, Zm Z,,tw -ma (eelgrains) HV Hydilla l-willon, (hyd,illa) 0 MD-DNR Survey station Fla Rppi, -ifini, (,idgemn grass) Hd Hegearuh- dwbi, (water stargratill) VA-MD MS Mylilphytilm spkltm (Eurasian watemiffoil) Pcr Po-ogeea-up,s (curly pondweed) 0 MD Charter Boat Field survey Pot Pols,hogeton pefolial., (redhead-grass) Cd C-ophyll.. d,.,... (I-aftirl) 0 Citizens Field Obse-tion Northwest Quarter PpC P-mte- ,eclinalms (sago pondweed) Ppu P-m,g-, p,rills (slander pondweed) ZP Zorunch,li, P41,3141 (horned pondweed) Ngu Najaj guadalpemis (southern naiad) A VINIS Field SuNey 40 N Noya, pp. (rusad) Ng, Nq,,L g-illur. (naiad) U.S.G.S. Ec Eld- c ... d .. a (carrinion elodea) C Cham p. (muskgrass) DATE FLOWN 9/14/86 7 q - 4'11@ --- va Vallisnen, -fic... (wild cele,y) SCALE 1:12,000 ? w- a I 103 SUBMERGED AQUATIC VEGETATION 1986 DAP,' CA 4 - FA4- EA 20 Ms,Va,Hd 3mg 3/, G N 10 Hv 4 HAI 2 ms Hv IA2 3 ,07 Hv JAI 2 9 KAI Hv 3 7 2 13 3 13 23 7 Hv, Ms, H' PA V, OAI- S 11 v H Ms-,Hd, NA 7L 4 2 A S 4 QA2 WA TA3 RA2 VA4 Hv 25 Hv x US U L 2 SPECIES SURVEY STATIONS Zm Zoste,. manir. (,,aigaas) Hv H@,dn1la-fiilll. (hydnlia@ MD-DNR SuOrey Staliw MT. VERNON, VA-MD Rm R- --- iwidgeon grass) Hd Hefe-lh- Mi. (-t., MS Afi@h,11- p,,.,.. (E.-ian .1-ifflil) Pcr P--ge- ,ip., (-ry go,nd@e dill MD Charter Boat Field S-ey Southwest Quarter Pot P.-gv- [email protected] (,edhead-grass) Cd Ce-ophylks, d--- (coo-il) Citizens Field Obsenvation P.c P"-g-s p-m.- (saw oo@) Ppu P-.-- p-11@, (slender wrsMead) 40 Zp Z.-kh,li. p.l.-u (horned pondweed) Ngu truadai-- (so,then naiad) A VMS Field Survey N Sa- pp. (naiad) Ng, N-,, g-fli- (nitid) US.G.S. DATE FLOWN 9114/86 Ec Elodr. -.d-- (- elades) C Char, sp. (muskgrass) Va (.iU celery) SCALE 1:12.000 104 SUBMERGED AQUATIC VEGETATION 1986 % - --- -------- JL + nh B-h --- -- ----- -w. f Wt B-,h h, inak, C" ..0 7 No 8 dot on f, ct.d :@o rl!l photoq hy Zrn Zovera marina (eelorau) SPECIES HV ifyoffilla 1-kiflala (hyddta) SURVEY STATIONS NORTH BEACH, MD-DNR Survey Station Finn R@pla mariama (widomm grass) Hd Here-h1ra dbi, (water starorass) M3 Myriophyllon $Ficanan (Etnasian watermilloil) Per Potamog-, crisp@ (curty pondweed) MD Charter Boat Field Survey MD Pot Putamoge-perfolia- (redhead-Qras3) Cd C-lophyll- d--m (cooma,l) Citizens Field Obser@ation Ppc (@W. pondweed) PDU P.-,-n -fll., (Wonder ponchneed) 42 ZP Zannirkelfa palulfris (horned Pondweed) NgU Nova, ruadalw.su (muthern natat) A VMS Field SuNey N Alfa, pp. (-!ad) Ngr Nqj- jr-iffinn. (..i.d) U.S.G.S. DATE FLOWN 9/13/86 EC Bodea canad-ir (common elodea) C ch-p. (muskgras3) Va V,11isqeda ameficma (wild celery) SCALE 1:24,000 o -LE 105 SUBMERGED AQUATIC VEGETATION 1986 r Le*1 RM K Rm cat o@YA3 Rm XA1 46 WA2 Rm VAZ RM A- NA4 Rm A RA4: Rm N,;-11. 8 4 R m MA3 P 4 TA2 UA3 Rm Rrn R L 4 Rm Rm, IIG K JA2 I A RM EW2 3 F HA2 C RM Rm 44 P= AA Rm B1. -R SAV beds verified by Court Stevenson of UnNersity of Maryland Horn Point Laboratory. SAV beds too sparse to be detected from aerial photography. Approximate location of SAV beds provided by Court Stevenson of University of Maryland Horn Point Laboratory. 14. ;r- L I SPECIES SURVEY STATIONS Z. z-"'. -am. (esig...) HV HYdrilk -ticillare (hydnila) MD-DNR Survey Station TILGHMAN, MD Pint Rwpia maifima (widgeom grass) Hd dbi. (-ter tavrg-) If MS Myfiphyllvm spicarum (Eurasian waternmilloil) Pcr Po-ogeton cdsp@ (curly pondveed) MD Charter Boat Fiefd Survey 43 FDf Potem,geton pefoha- (redhead-g,ass) Cd Ce-ophyllm demers- (coontafl) Citizens Field Obse@ation Pot, Pof,mo,- p-in-u (sago pondweed) Ppiu P.-g-. p-dl., (wencie, pond-W) DATE FLOWN 6125186 ZP Z-ichefta paf-frij (horned porahveed) NgU JVejas (southern naiad) A VIMS Field Sur@ey N N'j.' "'. (neiad) Ngr lv@j- g-illim. (muadf U.S.G.S. Ec Elodea canad-ij (- eladea) C Chars jp. (muskgrass) Va Vallimed, -fi... (,ild celery) SCALE 1:24,000 I 1-TE1 106 SUBMERGED AQUATIC VEGETATION 1986 75 s' Z - ---------- ZP . ....... ZA @w' Rm '-p DA2 Rm ZP R"t EA2 a, A4 X FA Rm Z p,,, BAILEYS A:5 A4' E% E 4 42'10; - XAZ WA3 IA2 1 JA3 2 -,7 AS2 - E OA3 C DJB 4 F E %K x .0 'A@ 41 x 1 0 R D N E c K' QA3 PAZ + 0 E C K FB4 A SAY beds verified by Court Stevenson Of University of Maryland Horn Point Laboratory. SAV beds too sparse to be detected from aerial photography. Approximate location of SAV bed. provided by Court Stevenson of UnIve,elty of Maryland Horn Point Laboratory. alpft N. SPECIES SURVEY STATIONS Zm Zoit- marina (ealgress) Hv HIdnill. -litilll. (hydr.11.) IvID-DNR Survey Station OXFORD, MD Rm Roppiar maridma (widgeon glass) Hd B-th- d0s. (..IS, stargr-,) Ms MyrrophylIftee spicalam (Eurasian v,tilenniffoil) Pcr Pot ... geian itp,, (cudy pon"ead) MID Charter,130at Field Survey 44 PDf Potain,gelon perfifialts (redhead-grass) Cd Cen-phyllum demers- (coomad) Citizens Fie If Observation Ppc P-mollton pectmw (Bago pondweed) Ppu Pat,mageton pasillas (slender ponoweed DATE FLOWN 6125/86 Zp Z .. icheli, -[.-ij (homed pondweed) Ngu Vajas uadala,,enjis (southern naiad) A VlIvIS Feld Survey N Naia, sitip. (naiad) Ngr Najas gracillima (naiad) US.G.S. Ec Elodea ca-densi, (coirmon Blades) C Chaa sp. (muskgra55) Va Valli ... i. -4c... (wild celery) SCALE 1:24,000 -r 1 .5 0 107 SUBMERGED AQUATIC VEGETATION 1986 a ock;(It k: int G, .1 Put .7 W.ter idol Fot 31 BA3. 7- o" CAi 9 2 FA4 /0 '@@DA4 .0- 3 112 to Tidal 26 Fiat /10 32 H A 26 & 26 32'3C 128 N3 ter 25 po'M ..e, Stat- < J. 32 26 23 1-5 6 4 Possum Point 1,3 Ref M.r, 45 p'-g 27 27 12 9 26 P,Ing. -Chambero". 1, 32 Goli Vill.ge I f -- ------ 6" 10 ?7 p1lrig pp g Point 14 w 4 44 ,0 31 Moss P0 t art or s "VMt Schools 10 tico 29 -It@p,, n IAZ 22 250 37 fmc, S t". u rjAR-,: KA4 21 33 29 2 Ref, 4@ 42650DO' 26 3 IS 26 Post Ch 7 M @A -- - ----------------- Chopo*a IMalit; 27 25 22 NA R M r142 is, OA3 A R6 a orps 25 tion ff 19 24 38*30 1 17'30" 7ZOO00 FE0 (MD.): 7. 3nooft 15' SPECIES SURVEY STATIONS Zm Z,,m,, -m, (eeig,ass) H@ Hydfill. -twillr. (hydr,11.) MD-DNR Survey Station QUANTICO, VA-MD R. fiippu@ -uhn. (.idge.n g,.sa) Hd H,-,nnh@ Abia (,vare, stang,ass) MS Af, Hophi flum sp-- (Eurasian atenniffoil) Pcr Pa-ogeto. cirpur (curty pondweed) MD Charter Boat Field Survey Southeast Quarter Pot F-lamogeton peffi-s (redhead-g,ass) Cd Ce-ophyllum deme,s.m (cw,tail) Citizens Field Observation PPC Pol-g-, pecir-us (sago mndweed) PPu P-mrrelln p1liffl, (slender m,dweed) 47 Zp Z-irh,fi, p.1-rd, (horled pond,eed) Ngu Nj,, y.adiqe,r,, (awthern naiad) A VIMS Field Survey N Nj.@ (naiad) Ngr N@,, g-11ima (na,ad) U.S.G.S. DATE FLOWN 10/15186 EC Elodea canad-ri, (corruncin elodea) CChani p. (muskgrass) Va I .11ine,i, (@id celery) SCALE 1:12,= 108 SUBMERGED AQUATIC VEGETATION 1986 W4 Pit "as Am AR $0 M*,H Vt ft 47 Hills Ms Ms,Hv,V Riv Potomac Al Heignima .4BA2 30 India and He iNDLAN 'rh nal, Hv,Ms 2f St Malin ea4 Pe n Va Ma4ti glys 1 4- NDI VIA D OWD R CTORY Point CAI TW& I Flat Va Piling A %Rdaf Flat Piling 161 n proct wh. Hillt C C Thd&ough Island /0 Marbury a SWIM A Sul N N Y) ....... % 131 J'It Grinds s Re": Wharf SPECIES SURVEY STATIONS ZM Z.-M Man- (eelgrass) Hv Hyddl, -1killr. (hydrilla) MD-DNR Survey Station INDIAN HEAD, VA-MD Rm R@pia -itma (widgeon grass) Hd H,1 ... uh... dbi. (-arr ta,gr-) MS Myriophyllum spic- Eunisarn atemilloil) PCr Pos-,,- d,,n,, (curly ponfteed) MD Charter Boat Field Survey Northeast Quarter Pot P-w- wMi-s ftedhead-grass) Cd C-1,phyll., de,e,,., (Coortail) Citizens Field Observation Pot, P-n,,-n p-m- (sag. oondveed, PPU Po-oge- -ill- (slender oondweed) 48 ZP Zarnichelia Palurni, (horned pord-ed) Ngu Nqiaj g-d,1ap-ir (southern naiad) A VINIS Field Survey N N- W. (natact Ngr N--111hn. (na@ad) DATE FLOWN 10115186 EC El-d, . .... d-a (convnon elodea) C Ch- . (.u.k,r ... U.S.G.S. Va V,11i-Hp .-K-1 (,ild -lary) SCALE 1:12.000 109 SUBMERGED AQUATIC VEGETATION 1986 P.0, Hill Vt* a @-' FI/ z % o T ----------- Ij Q;'D -4- '4 Crufte,'@ AA3 _J BA4 AfA-ii 'V 1-2 cei"I" -Ij A 2 SPECIES SURVEY STATIONS Zm z,,-, -uia (eelgrass) Hv Hdd1,--d1a1. (hyddla) MD-DNR Survey Station BENEDICT, MD Rm Rupp, -m- (,idgeon grass) Hd 11--th- dubt, (,ater stargrass) IMS Xf-iophyll- spicall, (Eurasian ate-Ifoll) Pcr P-m,g-, ,,V.s (Cudy M,deed) MD Charter Boat Field Survey 49 Pot Polamogero. peffia- (redhead.g,ass) Cd C-Ioph,fl- deme-m (-nta,l) Cituens Field Observation Ppc pul ... g,- p-fi..- (.9. mnd-d) Ppu Po-oge- p,rdlus (slender ponfteed) DATE FLOWN 9/13/86 zp Za-wh,fi. p,if.-u ft-d -.d.sed) Ngu .,dip- (southern na,ad) VIMS Field Survey N Vjas spp. (naod) Ngr Naja, g .... flima (na-ad) U.S.G.S. Ec ElMe, --deniu, (c- eloclaa) C Ch... sp. (muskgrass) Va lWh-fi, a-i .. I (1,ld celery) SCALE01:2@ocio ..'r 110 SUBMERGED AQUATIC VEGETATION 1986 SAV beds verified by Court Stwerson of University of Maryland Horn Point Laboratory. 3 m NA h@ n, AA3 NA2R m JA2 Rm DA I A" EA2 4XA 4*KA FA HA'0A LA4 GA3 @'@R IPA2 RA3 QA3 R m SA R m TA2 J. UA2 Rm VAJ Rm jb3 XAZ KD9 2 Rm F83' 0 i0a B4 D82 m ABI -9C DC4 ZA2 HD2 02 C 063" EC3 F012 003 Rm ED4 ZE3. C%D3 'DD3 C& r Y84 FC2 A03 C Xci *83 XC2 WC4 UIC 2 C 4 22 842 4 R03 , wpw so R C:::: 0 @ I p 02 RIC 4 -- JC3 olps L82LC3 1 4 KB3 KC1 N MC3 H82 LDI 0---MDI @-NDI OD2 P02 RD44 ........... SPECIES SURVEY STATIONS Z. (.19'...) HV HYdnil, -1kill,11 ftd,illa) 0 MD-DNR Survey Station SHARPS Fin Ruppia maritima (widgeon grass) Hd H-ih- dubia (vnnar stergrass) Ms xrywphyll.. p,.,.. (E.-Jan -le-doil) PCr Polannogelon cnispus (-ty pondeed) M MD Charter Boat Field Survey ISLAND, MD Pot P-ogeo,p-fli.- (neathearl-Q-8) Cd Ce.lophyllm derne-n, (coone'l) 0 Citizens Field Observation 51 PpC Poia-g- n,@rira- (sag. P..d-d: PPu Polaniolrelon pusillus (slender pend_d) ZP Zamichelia palusiris (horned pondweed Ngu Vajus g,,adalVensis (southern naiad) A VIMS Field Survey DATE FLOWN 6/25/86 u 4@j N Nay- w. (naiad) Ngr Nq,@ g-dUrn. (naiad) U.S.G.S. Ec E19dea canadensis (corninon ek)dea) C Cham p. (m,skgmss) Va Valli,-ia arn-icara (vAld celery) SCALE 1:24.000 o 1.1'r I o -10-El SUBMERGED AQUATIC VEGETATION 1986 AAe 3 - ---------- CAe .............. SA3* % A FAe N.@ KA % 4 EA HAI Hills Poin E C 0 M F T E 0 G KB 0A Corners%@dl OBI 4 CB2 F 4 C Lloyd@ N E LC4 C 4 RA Ba& H -4- M13 K C,4 M8 AVC4 134- r. 3 C 4 Wri t -------- C4.. SAV beds verified by Court Stevenson of .. .. ....... 4 -ZA y University Of Maryland H.m Point Laboratory. . ........ D2 01312 in 4 0 3 . ........... Dr. - 1 .4 @, 0 ........... 3 8 tk 04 X A @R,3 H .3 PC D WA S ...... SD,111@-- 3 bC4FC V ..4' Irma Isa 4 1 *SAV beds too Sparse to be detected from aerial photography. 041 APP-Imate location of SW beds provided by Court Stevenson AB AC4 C2- of University of Maryland H- Point Laboratory. U C 414 2 4 i@3 R UD4 I if XB DC TA Yez. VD4 WD4 CC2 0 FE4 I dill- AE4 C G -a n BIC?. i g r 'eas QE2, ....... 0 Ff1f4 :D S YN 0 61 UE3 C H U,' R C H @C R E isoe 4'- VE;1 4 nh Creak M a SPECIES SURVEY STATIONS Zin ZO-na marina (eelgrass) Hv Hydrifla -ficillaw (hydrilla) MD-DINR Survey Station CHURCH RM R@jsia manisma (widgeon, gross) Hd Hl-h... dabi. (water MS Myriophyll,,,,, spicanan (Eurasian watenniffoil) PCr Polamgeta, cripas (curty muldweed) MD Charter Boat Field Survey CREEK,MD PCf Polonraferan p,rffi-s (redhead-g,ass) Cd C-tophyliam demer-, (coontinq Citi.ens Field Observation 52 PPC P.I-g,- p.,Ln- (ag. MrKk--d) PPU Potmag-, parille, tuienda, pordweed) ZP Zarnwhetw, p,lstris (horned condweed) Ngu Naiar guadolupensis (Southern naiad) VINIS Field Survey DATE FLOWN 6125/86 NNaj- pp. (runial) Ngr Nalas jr-illuna (naiad) U.S.G.S. Ec Elodea canad-is (common elodea) CCh.. p. (muskgrass) Va Valtamn, amen-, (wTd celery) SCALE 1,24.000 0 112 SUBMERGED AQUATIC VEGETATION 1986 AA3 SA2 SANDY 3 79 Sandy lot matlows Bay CA2 65 Liverpool Pt 7 POOL 0 Elm 79 DA3 0 EA2 Blue say FA3 GA2 Douglas Pt HA3 SPECIES SURVEY STATIONS WIDEWATER, Zm Z,,ma marin, (aelgrass) Hv Hydrilla -ticillaia (hydrilla) MD-DNR Survey Station VA-MD Rim RPpia marifima (widgeon grass) Hd Helem,rhera dbia (water stargras4) Ma Atyriphyllun, pw- (Eurasian latemilloil) Pcr Pojamgeton crispu, (curly pondwelad) MID Charter,Boad Field Survey Northeast Pot pommoget,, pejrliaju, (rechead-grass) Cd c-,,phya- d-r.. (coontail) Citizens Fie d Observation Ppc P,tam,,eton pectinal,j (sago porKtwmd) pp, polamogeton pusiar (siencier Ponoweed) A VIMS Field Survey Quarter ZP Zannicheha _1__ (nnnnaci pon@lw,ed) Ngu N@i- g,adaiwnsir (-th.,n naiad) N Naj,s pp. (naiad) Ngr Najas gracuthma (naiad) U.S.G-S 55 EC Ewe, canadensis (commn eladea) C Char, v. (m,skgrass) SCALE 1:12.000 Va Vwlij.ma meriana (wild cew,y) DATE FLOWN 10M5186 -O.E- 113 SUBMERGED AQUATIC VEGETATION -1986 AA3 Wades Bay 68 LER BA3 Clifton Beach SMITH 3 72 Smith Pt M BRENT s, Simms Pt A BRENT POINT LD MON 38 Brents Pt CAZ 104 Lower Thomas Fit SPECIES SURVEY STATIONS Zm Z..... -ir, (eeigniss) Hv Hydfilla -twill- (hyd,ilia) 0 MD-DNR S-ey Station WIDEWATER, VA-MD R. R.,ph. -irma (widgeon grass) Hd H--h- dbi. (-, stargres.) Ms MvIlophvIlum spica- (Eurasian atenhidoil) Pcr Po-gero. cnispur (curty @hfteed) 0 MD Charter Boat Field Suivey Southeast Quarter Pol Por-ogeton pefolia- (redhead-grass) Cd C-ophyflum de-s- (cwntail) 0 Citizens Field Obseivation Ppc P,,-rg,r- pecirnalus (sago @) Pou Po-eger.. p.sill., (slender wnd@eed) zp Z-nichh, p,l,,Ii, (thorned Wnci,eed) Ngu gada!V,.,i, (@lhern namd) A VIMS Field Suivey 55 N N-, -, (-wd) Ngr Njw g-dir- (,,i,d) U.&G.S. E@ Ekd,. -deasa (-- elmlea) C Cha,a sp. (mskgrass) DATE FLOWN 10115/86 Va Valli-fis me,i-a (.ild -[.ry) SCALE 1:12,000 o 114 SUBMERGED AQUATIC VEGETATION 1986 C t@ MA CORPS RESERVATI N M JNTS pt-, 1(j Widewater @u 7M AA2 ZIZ 0 BA3 CA2 5 iL SPECIES SURVEY STATIONS Zh, Z.- -M. (eelgras.) Hv Hydrilla Y-kilfaia (hydrilla) 0 MD-DNR Survey Station WIDEWATER, VA-MD Rni Rppia -ilim, (widgeon grass) Hd H--h- dbis (-Is, et.rg.s.) N Ms Mydphylliim pic- (Eurasian watemidoil) Pcr Po-ogrion aispiis (curly pondweed) MD Charter,Boat Field Survey Northwest Quarter Pat Potinnogeto. p-foli-, (mdhead-grass) Cd Ceralophyll-m de-s-m (coo,tail) Citizens Fie d Observation Pp@ P-mogrWn-nnw1w (sagociondweed) Ppu P-mogetonpusilliis (slenclerpondweed) 55 Zp Z .. 1chslia (horned pordweed) Ngu Njs giiadl@wis (scuthern naiad) VHAS Field Survey N Naja, pp. (naiad) Ngr Nj. racilhin. (ramd) U.S.G.S. DATE FLOWN 10/18186 Ec Ffd- --d-i, (conimn elodea) C CA- p. (muskgrms) Va Viiiiis-i, a-ic... (wild celery) SCALE 1:12,000 0 I .-ETE. 115 SUBMERGED AQUATIC VEGETATION 1986 13; 1/ IN 11 T, A C_ 16 .o OD ABS" 10 A3 20 42@@ A. QA4 x 5 C03 A 4 AS N_ VA4 OA4 8134 c@ A UAI RAI '00 D83 SA3 0 FEC4_ EBI so 683 L A 2 K132- IKA3 HB3 m8a '00 qoo -JAI L EW 0194 GA2 0 IA2*/-@, > :V-FA2 NB2 "Zhr-HA2 JBI Ar-AC4 1133 S132 @@50 Z84 U B4 R82 DA2 0 CA3 @,@BA2 W84 AA2 vs T84 L 31"? SPECIES SURVEY STATIONS NANJEMOY, MD Zrn Z-- .-M. (.Ig,.ea) Hv Hydilla (hydrilla) MD-DNR Survey Station Rm RVpia -ritm, (,idgeon grass) Hd H,,,-a,h"- d.bia (-te, stal9l.se) I MS Afi-ph@ 11- (Eurasian --ffol) PCF PF,.,g,f.. up,u (curly pon@eed) I : MD Charter Boat Field Survey Northeast Quarter Pot P,i,,,g,lon p,folia- (redhead.g,ass) Cd Ceafoph)tlumdmersum (coo,taill, Citizens Field Observation 56 Poc Pot-ge- pe,li,.I,, (sago mndaad) PPU Pol-ffe- p.@iff@, (a@enaar -d-ed) ZP Z-awhefi. p,1,-is (h,,ned pondweed) Nqu Nj,, g-datupe-, (awthern n,iad) A VINIS Field Survey DATE FLOWN ID/16/86 N Nj.5 spp. (.aiad) Ngr Nj., g-,11f- (naiad) EC El@dea -4de.sij (comm, alodea) C Chara jp. (muskgrass) US,G.S. Va V,11u,eri. a-fira- (,,Id celery) SCALE 1:12.000 116 SUBMERGED AQUATIQ )j@EqUATIQN 1986 LA3 W, Ck 7, 31 16 10 P 78 0 KAI JA2 20 rA3 )ak C ."Ve ch HA3 'o GA3 so 70 FAZ' Oak Grove 20 tj Ic 27 25 10 Burgess 10 EA2 0 Field DA3. 28 70. 30 CkCA2 Hivet-side 79 A2 30 10 AA2 SPECIES SURVEY STATIONS Z. Z,s-, md,, (aWgrass) Hv HYdrill, -icidll, (hydlilla) 0 MD-DNR Survey Station NANJEMOY, MD RM Ruppi, -itim, (widge.n or..) Hd H--th- d.bi. (water irrg..s) Me MYiophyllum spica- (EuMsian watemilloil) Pcr P01-gell, crisp,, (curly pondweed) MID Charter Boat Field Survey Pot P11-01- p-fofi,fus (redhead-grass) Cd Ce.tophyllm d,.,,,,, (coontail) Citizens Field Observation Southeast Quarter PP- P111-911- PIri-- 0-9. Pnd-c) PPU Polamogeton pusillas (slender Mndweec) E M 3. . /.-D A Zp Zannichelia palmstris (horned pondweed) Ngu Nam ffuadaiupensis (Southern naiad) A VIMS Field Survey 56 N Najas 4pp. (naiad) Ngr Na)as gmcillima (naiad) Ec Rod- -ademps (- elodea) C Chaa p. (muskgrass) US.G.S. DATE FLOWN 10/16186 Va Vcflis,eria .,r,c,,a (wild celery) SCALE 1:12.000 .4 117 SUBMERGED AQUATIC VEGETATION 1986 'o P A 3 RA3 Qilkj@ A4 XA4 OA3 NA4' m 0 Fourth t A 4 4 -7 ABZ Dgj B _jL 4 CB 5 Chapel t J 4 DB A 2 F4C _N @o 0 4 H 4 EB3 o 1- . ..... arin, 20 FA4 cl-eek 7 00se G 3 FB 9 5 E 3 -5 W,rd.dl i6: .150 BA2 CA3 G 8 SPECIES SURVEY STATIONS MATHIAS POINT, Zm z--, -ma (ealgrass) Hv H)di11-enw,11,n, (hydr,113) MD-DNR Survey Station Rm Ruppia -itima (widg... grass) Hd Hel,mr,he,, d,bi, (water stargrass) Ma .1jr-,ph)jju. spicu- (Eurasian wte,milfoll) Pcr P--ge- isp-s (Curly PDndweec) MID Charter Boat Field Survey MD-VA pot P-mogeion pef,1i-3 (redhead-grass) Cd Ce,orqphYllum deme-1 (coontail) Citizens Field Observation Northeast Quarter pp@ p,.m.g- p-ri.., (.go nd-ed) pp. pu..eff- p.srjjr (@Jonos, oo@aadt Zp Z-jh,he p,l,,Iis (horned pondweed) Ngu Vj,, g-dip,,u,1 (southern na,ad) A VINIS Field Survey N Sjs spp. (naiad) N91 N.)- -11- (naiad) U.S.G.S. 57 Ec EJd- 111-de-il (c- abda-) C Cha,, p trhuskgrass) Va 1'.1fi-n. ..en,... (wild -1.1y) SCALE,1:12,000 DATE FLOWN 10/16/66 118 SUBMERGED AQUATIC VEGETATION 1986 U 'A 2 C) BA20 0 D 2 'o A 0 0 0 7 6 E A 10 F A 9 'o 4 0 9 60 b 39 (oei t 10 Is HU Mathias Pt ',Club Eccentric 17 bit a IN-, IA2 ,,@entd_ 36 JA2 76 16 KA2 LA2 20 H 1 1- IN V 4 it i SPECIES SURVEY STATIONS Z. Hv Hydrilla weniallata (hydrilla) MD-DNR Survey Station MATHIAS POINT, 11M R"ppr, l*rdgeon grass) Hd Hele-hem dbw (water stargrass) Me Mylophyllum Vic- (Eurasian watemiffoil) Pcr Polmogelon cfisp,, (curly ponchveed) MO Charter Boat Field Survey MD-VA Pot P-09ef" Pelf1fil- (ledhead-grass) Cd Ce-PhYllum d,,esum (coortail) Citi.ens Field Observation PPC Polmoffetelpetim-, (sagopondweed) PPu Polmogelon p,,111,, (slender pondweed) Southeast Quarter Zp Zanakhefia pal-tris (horned pond"ed) Ngu Navas guadalupe.sm (southern naiad) A VMS Field Survey I'l Nj,, pp. (naiad) Ngr Nuira, gacillim, (naiad) Ec Elodea camade,sis (- ebdea) C Ch.. 1p. (na,sk9nisa) U.S.G.S. 57 Va Vallisneria amencma (w!W celery) SCALE,1:12.000 DATE FLOWN 9113186 o -o-El 119 SUBMERGED AQUATIC VEGETATION 1986 SO T VC, S@ 7- M AA JA _A\;V U@; 20 'o & 4v 'a EA4 & B AA3 2CA2 DA3 Gumt 'o SA4 WA2 3 ------- -- -- --- ... ..... .. . UAI 4 bg VAI SPECIES SURVEY STATIONS MATHIAS Zm zar-, -ma (deig,ads) Hv hlydill--icilluar (hydrilta) MD-DNR Survey station POINT, MD-VA Rm Ruppid -irmho (wiageon grass) Hd dbi, (dader stargrass) K Mo Charter Boat Field Survey Ms %it ridph)@Im spicatam (Eurasian ateumiftl) Pcr Pdia-g-, -,p., (curly Poacmsed) Pot Pura-getra pefoli,f- (redhead-grass) Cd C-loph)(Na,deme,sua, (-ruiff) Citizens Field Observation Northwest poc p,,,..dg.... (.9. horo.e.d) Ppu P--gerah p.silld, (slender pondweed) VIMS Field Survey Quarter Zp Zarnichelia palusiris (horned pondweed) NgU Adjas guadadupe.- (southern n.id) N Vj.r sp. (n-d) Ng, N.J., (-.d) U@[email protected]. 57 Ec Elad- canduensis (comnion ek)dea) C Chard p. (muskgrass) Va I .1h,aeia aaerfell, (,ild celery) SCALE 1:12.GDO DATE FLOWN IW16/86 120 SUBMERGED AQUATIC VEGETATION 1986 '@i KAI 3 'o JAZ TA4 Mpt GA2 FAI LAZ 4 C-1 Lf g' NAI 82 -;V A 4- BI.ffPt ZA2 YAI 2@ -51 0 XAI EA1 3 DAI WAI Cal, V 2 H-A.RR D1 RA 0 '7 OA2 >- CA3 3 l@ U 1 7 0 17, - BA3 20 Benny Gray Pt TAI 0 AA2 B osso Pt. 21 k t ot Per Cedar Pt QAI 0 1 RA2 37 31 0 6 11 0 a '10 29 0 2@ V 31 0 0 27 0 4@ 7 17 8 16 5@ 16 8 'o SPECIES SURVEY STATIONS HV HYdrilla -filillal, (hydrilla) MD-DNR Survey Station MATHIAS POINT, Rm RaaPia ma,ilini, (widg.on gr."@ Hd Her-them dbi, water starg.... MS MY-phyll-pi- (E-son-t-iffoal) pcr P-.ge- crup., (curly pdrdweed MID Ch ".1 B..t Field pot P.a.ng-n P"f.1j.- a Survey Southwest Quarter Cd C-Iphyff.. d--. t.-jaij) Citizens Field Observation PPC P--r-. p-mauu (eg. pond-d) PPU Pal-911- slander .d.-d) ZP Zannichelia p,l-ris (horned bordweed) Ngu NOW guadaimpen,i, (southern naiad) A VINIS Field Survey MD-VA NlVai-pp. (naiad) Ngr Nay,59-111ma (naiad) Ec E10dea canad-fi, (comnal elodea) CCh4ra SP. (muskgrass) U.S.G.S. 57 Va Valla ... ia lm,fi-a (wild celery) SCALE 1:12.000 DATE FLOWN 10/16/86 121 SUBMERGED AQUATIC VEGETATION 1986 A ......... i@ A lk 4 IVI, SPECIES SURVEY STATIONS MECHANICSVILLE, Z. z.11- --liee feefor-) Hy Hydfl,, 11-d1w. (hydrOa) MD-DNR Survey Stabon Rm Rvpizi maninima (widgeon graw Hid H-M- dba (-, atrswass) WO Charter Boat Field Survey MD MS Mymphylla,, 'pilaime (Eumian weltermillcil) Pcr P-nnogeion c,*pa, (curly pondweed) pDf Po-oge- 'erfoLfa- (redh ad-grai Cd C,-ephyll.. d,--. (C-tal) Citizents Field Observation ppc P.-r-, -Z' (aael,, ailind-cf) PP. F@ . in ..... n P.,X- 01and., P-dinead) 59 ZP Zenakhly,, p,l-ris (honned p..\,-d) Ngu Nqi@ jr-dalwalit, (sculftem naiad) A vus Field Survey N 84i."Pp (.led) Ngr Neia, jr,,cfflma (ftied) U.S.G.S. DATE FLOWN 9113186 EC Elodea canad-ii, (c,-ri el@odea) C Ch-p. (ruakgraas.) Va vm ... m -icaaa twild celery) SCALE @124.000 122 SUBMERGED AQUATIC VEGETATION 1986 N-1 Z.- f Zm Rm C A -Rm m A e aw -in A2 E SPECIES SURVEY STATIONS Z. Z.- (lielgra.) HV HYdIfill v'fk1Uf, (hydrilla) MD-IDNR Survey Station BROOMES Rm Rwpia m@sima (wkWeon grass) Hd H,.-,h.. dbi. (-W, @rgra-) N JAS MyHophyll-i spic- (Eumskin watormftQ PCr Polmogelon crispus (curly pondweed) 0 MD Charter Boat Field Survey ISLAND, MD Pot Po-vtomptrfollams (redhead-grass) Cd Ctrwophyllum dem-m (coontail) 0 Citizens Field Observation 60 PPC Pol-.,,I.. p.IbW. (..go POndwd) Ppu P-ogeto, p,udlm (slander wndweed) Z,p ZamkktUa palwirts (horned porKiweed) NgU NV. gadak-u (Swthe. ratad) VhMS Field Survey DATE FLOWN 9/13186 N Nqja-pp. (naiad) Nor Nj. g-iffl- (-id) US.G.S. Ec EJodea camademis (co-on elodea) C Ch-p. (-kur-) Va Vflftmeda -i- (wild celery) SCALE 1:24.000 .1 o 123 SUBMERGED AQUATIC VEGETATION 1986 i J AA2 8 A 3 5 Z p 4 SPECIES SURVEY STATIONS (eelg'..) Hv Hd,dt. (h,dnlt.) MD-DNR Survey Station, COVE POINT, Rm N,@pa-pi- jwjdgeonga-) Hd 11--h- db. f..- -g,-@ Ms --- (E,,-isn ft, P.-.,,- -- (-1y o..--d) MD Charter Boat Field Survey MD Pot P--- (r.dh-d-,,-) Cd c. ...... (-rw) Citizens Field Observation PDC P-.rgo- -f-w (sag. @nd.-d) Ppu P.--- p.,,11., (sieravr Mnd.eed) 61 ZP Z--hefi, p.1-- (norn1d mnd.e,d) Nqu AW- ..d.1.p-, (so,thern na,,d) AL VIMS Field Survey N A.--- @pp. (raiad) Ngr (-,ad) DATE FLOWN 9/lV86 Ec Elld- -d-m (co- ei@a) C ch", 'p, ('Uskq'ass) [email protected]. v. ".11is-i. ---. (-w SCALE 124.000 124 SUBMERGED AQUATIC VEGETATION 1986 4 --HA4 CA2 AA2 A2' 4 DA4 6 1A LA4 MA2 NA A A R SPECIES SURVEY STATIONS Zm Z-.. mvi- (eelg-) HV Hydill, -twillta (hyd,ifla) 0 MD-DNA Survey Station TAYLORS Rm R@ppja maritime (widgeon grass) Hd "1111-1h... db,. (w.tc, et.rg.e1) FAS My-phyllum spic- (Eum3ian wate-Noil) Pcr P--g-, (-ly poodweed) N MD Charter Boat Field Survey ISLAND, MD nt, PDf P-,-, peflia- (reclhead-grass) Cd Cnalphyll@ d,.,,,,, (cm 0 Citizens Field Observation 62 PpC F-..g,,.. ji,-@- (.9. ocirdweed) PPU Polumageton p-111vt (slender Zp Zam,ichefia palusirij (horned pondweed) Ngu Navas guadalp,nji, (southerr VIMS Field Survey DATE FLOWN 10119/86 N Nj.' pp. (naiad) Ngr Nja, gre,dli., (namd) U.S.G.S. EC Elodea canadenjis (-n elodea) C Ch- p. (rnuskg,ass) Va Valli-ed, =eric- (wild celery) SCALE 1:24.000 1.11E 1 0 ."o-E, 125 SUBMERGED AQUATIC VEGETATION 1986 DA3 or OWN @-@ Nzk 7 BA Rm SPECIES SURVEY STATIONS Z. z-- arvin. (eelgrasa) HV Hydfitla -ixilkta (hydrilla) 0 NlD-DNR Su@y Station GOLDEN Rm Rvpm m-triara (widgeon grass) Hd H--arh- dbia (w,nar stargmss) I Me MH@,hyll.. Vk- (Eulai- wata-ftil) PC, P.-jr-. -P., (curly M:..ad) 0 MID Charter Boat Field S-ey HILL, MD Pot (rdhad.g...) Cd c-,phyll.. d,,,,,.m (coo ,) 0 Citizens Field Ob-ation 63 PpC P--geton @crinah,o (sago pordweed) PPU Pora-o,,1o.,uji1h,, (alenderDondweed) ZP Zankhefta p&,sfdj (horned dondweed) NgU Nja, @odal@-u (southern naaad) I A vims Field S-ey DATE FLOWN 10119/86 N N-j-pp. (naiacl) Ngr Nj.1,1,cifts- (naiad) U.S.G.S. Ec Elode. coaad-is (co,nnnon elodea) C Ch-sp@ (-kgrass) Va Valfisneria dnaefic- (wild celery) SC@E 1:24.000 o 0 126 Cr% Af%l KA'rl^ VEGETATION 1986 33 31 6 6 50 13A 33 10 31? 5 a 20 M 3 19 36 Cf, 2 A42 32 Co CA4 a 37 All 10 9 29 JAS 12 Wheat No 3 's Somerset Beach 36 70 Cem Merthaville Ambar 0 -2t SPECIES SURVEY STATIONS Z. Zov". -in. leelg'-) Hv Hydill, -willom (hydrilla) 0 MD-DNR Survey Station KING GEORGE, RM Rappia manitima (widgeon grass) Hid Hel-them dubia (water stargrass) Ms Myriophyll- pi-n- (Eurasian watemigoil) PCr Poro,nog-, up@ (curty PW eed) MD Charter Boat Field Sumey VA-MD aon@ Poll Po-oge-perfolial- tredhead-grass) Cal C-tophyllu,,, dennersum (c sit) Citizens Field Observation Northeast Quarter PpC Polamog-n p-inar" (saga pondweed) Ppu Pola,oge-p,jilfus (slender pondweed) Zp Zamichelha pal-ri, (horned Pondweand) Ngu NJs gadlWmjr (southern naiad) A VIMS Field Survey 65 IN N.@., pp. (n.iad) Ngir Najar grocith- (naiad) DATE FLOWN 10/16/86 EC Elod- -nade,,i, (cmm, loolea) C CA-i p. (nnuskgrass) Va Vallurefia meric=a (wild celery) SCALE 1:12.000 0 am. SUBMERGED AQUATIC WIMETATION 1986 AZ %I ,% 2 4 A2 5 HA2 is r 1i Boys C All? 3 Hv,Cd,Vo, Ppc,zp EA1 FAI aryland GA2 Point Zo 27 23 (9 30 At jo C so .?3 3Z All 53 -Li ht J6 10 lk@ 1b C-, 30 rl) AV Is /0 of 25 11 Is a IA4 Grimes No 3 MARY Som, 12 Cm 3 G eac airview 0. SPECIES SURVEY STATIONS Zm Z-- -w. (eelgr-) H@ Hdn1l. -Iwill- (hydrill,i) MD-DNR S-ey Station KING GEORGE, VA-MD Rm Rupp!, -ujnu, (,idgeon grass) Hd H-uh- dubio (water stargrass) MD Charter Boat Field Suivey Me Afy,iophyffurn vi-In, (Eurasian atenrilfo@l) Pcr P-rnoxe- ispk, (curly pond@eeo) Northwest Quarter Pot P .. rno@- peflilf.r (redhead-gllss) Cd ce-.phyll.. d--n, (-njail) Citizens Field Observation PPC Po-otelon peca-a- (sago loondweed) Ppu P.-O"-p-Ml., (slander, 65 Zp Z-whefi, pol-il (Mmed pond.e.d) Ngu ,,d,1V-u, (southern VIMS Field S-ey N pp. (naiad) Ngr Naj., g-Uhma (naiad) U.S.G.S. DATE FLOWN 10/16185 Ec Eld,, c-d-u (common elodea) C Ch- sp. (muskgrass) Va I M-- -,wa- (.0 cald,0 SCALE 112,000 %a- 128 SUBMERGED AQUATIC VEGETATION 1986 R I Vr It ri MA-RYLAnt, CA2 0 DAI '4, to A k dilk A 8 A V 1, p G U.a R N D 7 % A7- mill Z 4 7@- A "NX Qcl Q, if CZ@ C2 U 8 N A V A L C' ol, 0-ts. Hill P R 0 V I N G G it '"e. C % dl@ .0a SPECIES SURVEY STATIONS DAHLGREN, Zin Zortem marina (eelgrass) Hv Hydrilla rerlicillato (hydrilla) MD-DNR Su"ey Station Rm RWpia mariffma widgeon gess) Hd H,le-lh- dlibut (..is, litingntit.) Ms Mydaphyflum vilanal (Eurasian walemil Pcr Pot-g-it rup., (curly rionatiesid) MD Charter Boat Field Suirtey VA-MD Pol Portmagirionpefoliants (redhead@grass) Cd Ceralophyflum demersum (coontaii) Citizens Field Obsentation lopc Pat ... getim pecimallis (sugo condfitelid) Pp. P-ogeron pltmw simile, gnnicsed) 66 Zp Zamlkhelia palustris (horned riondweed) Ngu Vj- g,mdalp-i, (southern naiad) A VIMS Field Suriiey N Vj,, Pp. (naad) Ngr Notes g-11ime (naiad) U.S.G.S+ DATE FLOWN gJ13186 EC Elodeal canadensis (Conerion elodea) C Ch.. @p. (.uskg,..) Va Vallism,fia americaml (wild celery) SCALE 1:24,000 o 129 SUBMERGED AQUATIC VEGETATION 1986 M.-i AA2 2 BA4 o -EA2 vv@ FAI j GA2 HA3 IQ JA3 I A 3 - -a'-, AM 4. jM A 2 --& kNA2 qkv- 0 A 2". o PA2 71A SPECIES SURVEY STATIONS Z. z.11". HV Hdfill. (hydnRa) MD-DNR Sumey Station COLONIAL BEACH Rm R@PPil @11@ (Wid@ gM33) Hd He-hem dbw (,ater Mrgms) MID Charter Boat Field Sumey NORTH, VA-MD Me Mynophyll- spica- (Eurasian watemifti) Pcr P-ow- cmspw (curly Pondweed) pDf P-,-. p,,fn.- (redhead-graso Cd Cmrophyfl-m de-,,su- (cwntail) Citizens Field Obselvation 67 PpC P-og-p-ml. (@pcrdwosd) Ppu Pwa. g,,,. p,,ill,, (slerlder Pondwe6d) Zp Z@h,Ua palustri, thorred -dweed) Ngu Nj- (-.e. VINIS Field Suryey DATE FLOWN 9113/86 N Nqja, spp. (ruuad) Ngr Naj= g@cuffima (ruuad) U.S.G.S. EC Eld,. -dmis (cc- elocea) C Ch- . ^skgram) Va V.Ifi-n@ -n-a (wild celery) SCALE .1:24.000 0 130 SUBMERGED AQUATIC VEGETATION 1986 2 f f V. T We N SPECIES SURVEY STATIONS Z. z.,.. eurni.. (.Ig,.aa) Hv HIdlill, -licillal, (hyd,illa) MD-DNR Survey Station HOLLYWOOD, MD Rm R,,pm m-irlm, (Widg- g,aSs) Hd H--h- d.bm (W.I., rit.19-1) MS Myriophyllum Spice- (Eurasian watenniffol) Pcr P-mo ..... .. irp. pondead) MD Charter Boat Field Survey 70 Pot P,-gvo, pefliaiur (redhead-g"".) Cd Cer-phyllun, demersum (coonlaul) Citizens Field Observation PpC Ponune,110. p-ml. (-go pondweed) PPU Po-ovio, p,,ill,, (slender pondweed) DATE FLOWN 9/13186 Zp Z .. ichelia p,I-fi, (horned dondweed) NgL1 Nej,o g-daf@-a (southern naiad) VImS Field Sur,rey N Nqi,, - (naiad) Ngr N@,, g .. iffi- (na,ad) U.S.G.S. Ec Vol- -,d-i, (conanon eloolea) C Cha,a p. (,uskgrass) V. V.114-H. -firse. (wild -Is,y) SCALE 1:24,000 131 SUBMERGED AQUATIC VEGETATION 1986 j EA2. FA3 R DA2 AA2 BA2 J, CA4 ms A P V .1 K Ppe,Hv,Zm Hv AM T' Aft mp GA4 v X I N t Ala HA4 1A*- J SPECIES SURVEY STATIONS Z@ z-'. Hv HYM11a -kiflala (hydr,ma) MD-DNR suivey stbw SOLOMONS ISLAND, Rm R@pio -wa (,odge- g-s) Hit H-1h ... d.b,. (-te, MS AfYfiophyfl-i spic- (Eurasiai wemiftt) Pcr P,f-og,to,m@pw (c,oy MD chalter Boat Field Suivey MD P.t F--1. ,f0f.- (,.ch-o-g,-.) Cd C-tophyll- de-jum (cmnta,l) Citizens Field Obseivation Ppc Pol.mogno, @cfmww (sago pond,@ew) PPu PI,mg,t,, p,,dlw (slede, wndeed) 71 ZP Zd@hchfa paim-is (@rned wrd-d) Ngu Nm., padlw@u (sm@em -ad) A VPAS Field Sumy N Nai- pp. (i,aiad) Ngr Na- p-iti- (namd) US.GS. DATE FLOWN 9113186 E@ FJ-d'- -d-u (- lda) C Ch-p. (mskg,ass) Va Valli-d, @fica- (,ild cele@) SCALE 1:24,000 o 132 SUBMERGED AQUATIC VEGETATION 1986 J A"N 133 A@ DA4 Rin IAS GAI H A JAI LA3 Rm. rMA2 NA2 7 OA2 PA2 -.2 7 q wan-a SPECIES SURVEY STATIONS 2:m zb- marina (selgress) Hv Hydrilla -ficiflaw (hydrilla) 0 MD-DNR Survey Station BARRENISLAND, Rm Rwpia maitima (widgeon grass) Hd Hef-A,,a dubia (water stargrass) Me MYHOPhYlfam $Fka- (Eurasian watermincil) Pcr p@tann,,- ca,., (c.Hy 0 MID Charter Boat Field Survey MD PIA P-191ro, pelfolf-I (redhead-crass) Cd Cemfophyffwn dtmtmm (c 0 Citizens Field Observation I% Powanorewn pecrinaw (sago Pondweed) PPu Polannogelonpu,inw lslenderLpo) 72 2:p Zafflkheila palastris (horned pordweed) Ngu Nqj. 9.a.1aa-u, (south.rn naiad) A VIMS Field Survey A I'l N-j-, ,P. (nsiad) Ngr Now ,acillf., (naiad) U.S.G.S. DATE FLOWN 1011W86 Ec, FJodeq caaa*aris (ccnnman elodea) C Chan, p. 4-.kQ-) va Valfisneda antericana (wild celery) SCALE 1:24,0DO @5 0 133 SUBMERGED AQUATIC VEGETATION 1986 AB3 U63 S132 4' a 'X v -in WBZ XB2 @H@v BA2 @A yel EA3 CA IA2 ------ DAI Z04 GA3 FA4 "A& ACZ"'-- T A R 3 QB4 D C KA2 21 2CY - 8 A + CC4 cc @y= LA2 M$4 UC2 GC3 NA2 -p C2 RC2 0 IC2 QC OAZ p I.C2 KCI 0 3 MC2 T c vC 03 WC3 D XC3 PA YC2 k 0 N G A Rm L 131 ZC4 X82 R M Jai E82 C D 4 QAI FBI D, D63 E .2 IBI / Qb4 me 'k FlkW + a-* R L D 2 ot,, %P RAI CB2 SA4 BB2 A92 c... KOa - T I HD4 JD2 '7- ID2 Rm ZA2 YA 2 Hoop-wllei XA2 UA2 % 0 SPECIES SURVEY STATIONS Z. z-- (eaw...) Hv HydHH--idaw, (hyd,itta) MD-DNR Sumey Station HONGA,MD Rm Avpia @U-m (wkl;;@ QM83) Hd H-th-i dubia (@ter starwaw Ms Mynophyll@ sk- (Eunisen watemiloto Pcr Po-oetv. cnjp@ (curtv pondweed) filD Charter Boat Field Smey 73 Pot Po-ol-R-ffir., 0edhinid-g-s) Cd Ceawphyfl@ de-,- (coomall) Citizens Field Obsenation Ppc Poui.og- p,-- (.ago P-*-d) Ppu Po-oltion usdl@ (slender pordweec!) Zp Z@hefia pal-n, (homed oond@W) Ngu Nj.,,-d.1,e-u (ii-th.ninsed) AVRAS Field S-y DATE FLOWN 10/19186 N Nj- @pp. (read) Ng, (n.id) U.S.G.S. Ec Eld,. -de.@ (oommon lod..) C Ch-,. (m,iskg-) Va VW-fia (wild celary) SCALE 1:24.000 134 SUBMERGED AQUATIC VEGETATION 1986 --- ----------------- - -- -------- - k 4 -Int, 76"L - , . 17- 17- AW=-@- - 1Z !F FA3 G D-k P.i.@ HA2 IAZ Rm 64 c... 3 KA4 7 LA2 j MA3 J NA4 ..... ..... . 76-07'31 SPECIES SURVEY STATIONS zin z.- -h. I-1g...) Hv Hyddll, -ficifl- (hydrilla) MD-CNR Survey Station WINGATE, MD Rm Rippia maduma (widgeon Qras3) Hd Hel-h- d,bia (@vater stargrass) Me Myriophyll- spicaliari (Euri3lan waterritiffoil) Pcr Por-toplo, cfirp@ (curly pondwead) MD Charter Boat Field Survey 74 Pot Pw-iv-xfMa- (iedheiid-Q-) Cd cemtphyff@ deme- (coonwil) Citizens Field Observation Ppc P-ogt-p-M- (woopordweed) Ppu Po-jiv- p-ill@ (slander pondweed) DATE FLOWN 10119/86 Zp Z@khefiapakstrij (homed pondiveed) NgU Naj@ g=dajWmris (sotithern mated) A VMS Field Survey N Nj. pp. (.led) Ngt Naj@ 9-illima (naiad) US.G.S. Ec Mod- -dewi, (c-n ek)dea) C Cha-p. (-.kg-) Va VqLlfsefia -ric-i (wild celery) SCALE 01:24,000 .1 0 ;-TE. 135 SUBMERGED AQUATIC VEGETATION 1986 .9 A Y N 0 .-f-j R T 0 W .. ..... ....... A N 0k r ILA ....... 1. ....... ..... if lily V fA L L E E . . ........... ... .......... -2L % .. .... % -A c-k f c' + % AA3 ot RM.Pt Pin Point @A C 0 P@ L SPECIES SURVEY STATIONS Zm Z-- -i- (eeigrass) Hv HM11. -,mfi- (niomw MD-DNR S.,v.y Station PINEY POINT, Rrn Rppi. -,,j- (.idgn- 9 .... Hd Her,-,h- dbin 1- -9-.) Ms Mr-wph,11-pic- (Eunt---iftil) Pc, Pw---,firp., (-ty 0--ed) IVID Charter Boat Field Survey VA-MD Pat (10h-d-grit-) Cd Ce, .. ph,11., d--, (coonta,l) Citizens Field Observation PpC P--g- p-in,fus (aaw wndeed) Ppu pto,nog-npusill., issen,,e,aon@eeci) 79 Zp ZnWch,liap,1.sr,u (Wrnedmn,J,eed) NgU Nj,, -diwe- (S-them namd) VIMS Field s-ey N Noyar @pp. (miad) Ngr g-alma (naiad) U.S.G.S. DATE FLOWN 10119/86 Ec Elodea -d-sij (i:o,rvna,i eiodea) C Ch- p. (-kgr-) Va VIfir-w -fic- (,ild celery) SCALE 1:24.000 136 SUBMERGED AQUATIC VEGETATION 1986 -A ..... ....... ---------- CHESAPEAKE BA Y ..; .... ........ . AA4 ..... ..... BA4 V CA4 4 J EA3 FAI NA2 GA3 Q) 0 U T L A N D IN E C' IA2 A KA3 JA3 LA3, SPECIES SURVEY STATIONS ST. MARYS CITY, ZM Zostem marina (",grass) Hv Hydfifl. -idll- (hydrilka) MD-DNR S-ey Station Rm Rppi. maritime (widgeon grass) Hot Her-lb... dabs. (-ue, gua,gr-) Ms Afyriaphyllum spicanan (Eurasian PCr Ponanagelo. cdsp.s (curly Mndweaal) MID Charter Boat Field Survey MD Pot Paternatelon Perfolial., (rech-c-9-0 Cd Ceratophyll.. dm,,,,m (coonvul) Citizens Field Obsemation Ppc Pommagew, pe,tin-, (sago oandneed) Ppu Pa-oge- puuitl., (sLnds, pond-d) 80 Zp Zannichelia palustris (horned pordneed) Ngu Njw ,,ddp,,,, (Southern namd) VIMS Field S-ey 14 JVj- spp. (naiad) Ngr Najw 9-111mra (naiad) U.S.G.S. DATE FLOWN 10119186 Ec Elodq canadensis (common elodea) C Chma p. (mskgrws) Va Vallineria americana, (wild celery) SCALE 0124,000 137 SUBMERGED AQUATIC VEGETATION 1986 ONC, al" 'eve. -a CAI 1-4 141 .a SPECIES SURVEY STATIONS Z. Z"11- -w. (-191...) Hv livdill. ivnirdlta (hydrdia) IvIO-DNR Survey Station RICHLAND POINT, RM Rwla ra-ilima (widgeom grass) Hd Hrl-h- dbia (@vate, slargrass) ms Aftlophyfilm 'ph- (Eulasian vatemiltod) Pcr F--g-, up., (curly porii%-) NID Charter Boat Field Survey MD Pot Pr-g-,, p,,r,,fi.- (iadha.d-gra..) Cd C-tph)ll-dm,smm (coontad) Citizens Field Observation PpC li--g- p-@aa- (.ago pondveed) PP. P.-w- P-11., iiiiand., pondvieed) Zp Z .. kh,[email protected], (horned Wnd-ad) Ng. (aclutl,- naiad) A VINIS Field survey 82 N Nj.' '- (-ad) Ngr S,- g-,lim. (naiad) U.S.G.S. EC Elodea -.d-u (connndr, eloda) C Cham p. (muskgrass) DATE FLOWN 10/19186 Va i, -fi- (.ild celery) SCALE.1:24.000 138 SUBMERGED AQUATIC VEGETATION 1986 AA2 !@CA4 N F I S H I N 0 B A y EA3 HA3 2 IA2 .41 0 0 OJAZ 12 3V T.. F4 LA2, MA3 N 4 -1- C@SA2 RAI TA2 Go 02 R-HWft H B 2 UA3 VA4 > A03 C82 ZAI 181 J83 K, I YA2 A T WA3 S T XA2 PB3 RB3 083 4rRm 083 SB2* R 1, 3 SPECIES SURVEY STATIONS Z. zam. ad.. Hv Hydnilla -acillaza (hydriga) 0 MO-ONR S-ey Station BLOODSWORTH Rm Roppia ma,11ima (wk*ew grass) Hd H-1hem dobi, (water stangrass) MS afjvdaphyfl@ spicaran (Eurasian watemillol) Pcr P-agelon crispw (curly poroweed) E MD Charter Boat Field Sumey ISLAND, MD Pot Pa-relm Perfolfanus (rediead-grass) Cd ceratophyflum dem-sum (coortaii) Citizens Field Obsemation PPC Pauaaagv.. (mg. wrKM-d) PPU Poianiollet.. pastIN, (slander panoad) Zp Z=nkhefta pal-tri, (homed pondd) NgV Naia, guadalVensm (southern naiad) A VIMS Field Survey 83 31C N brala, - (rauad) Ngr Nay. g-fili- (-iad) Ec Elodra caa,*wls (connnor, elodea) C Char. p. (...kg-.) US.G.S. DATE FLOWN 10119/86 Va Vallij-Ha an,tfi- (,rilol ceiery@ SCALE 1:24.000 0 1.1-E, 139 SUBMERGED AQUATIC VEGETATION 1986 C A N T I C 0 1 2 c L L N 0 1 8 W C C) I C 0 v R 1.11 P, 7 7 @:DEAL D E A L I S Z 4 0 IN 0 1 - IPA4 NA4 JA3 PAi", QA2 T.iw 4P=-@- A3\ Rm V E R AA1 A SPECIES SURVEY STATIONS DEAL Z. Z-11. (.19'es.) Hv 11,difle -dedfata (hydnlia) MD-DNR Survey Station Rm Rwpi. -jti.. (.idgem gra3s) Hd hf--h... dbw v,ale, ta,gass) rvey ISLAND, MD MS @C-ophyjl- spir- (E-lien --ffol) FiC, p---. -j,.,, (-t, -r-eed) MD Charter Boat Field Su Pot P.-geton pefolia- (n,din-c-g-ii) Cd Ce-.PWI-deme-m (coonta-0 Citizens Field Obselati0it 84 PPC Pw-og- P-m- (.9- -d--d) Pp. P--e- p-11.1 (@ierder ci-ed) A VIMS Field Survey DATE FLOWN 10119/86 Zp Z-jchefia patust,is (haired Md-.d) Ngu A,,.,x.,,dip-ir (souther,naiad) N S-, pp. (na,ad) Ng, N.,., -dh.. nal.d) U.S.G& EC Eldea -densij (oonencri elodea) C Ch- @p. Va v.11i, .. i, -w- (,,W ele,y) SCALE .124.000 I o 140 SUBMERGED AQUATIC VEGETATION 1986 K E 0 1 0 -W 0 U N T V 0 N 0 5 0 7 0 E C K -S T P R :1 N C E Ej S A N N T N 0 1 14 0 N G R E L NE C K ento T S P E T E R S St Stephen Monie 0 N 0 "A 2 0 :If V 6riole -0 t Ch..p -4 T.P, 4, `4 . .1 z 7" C K L S KAI E JA4 IA2 '.1V E S T V FA4 o 4 E M A IN 0 K I N AZ F-eR Rm AA3 A.ditp F A 1 0 U =q SPECIES SURVEY STATIONS Zm Zostera marina (wigrass) Hv Hydrilla -1killaia (hydrilla) 0 MD-DNR S.Ney Statian MONIE, MD Rm Rappia maritima (wiclgacm grass) Hit Hel-hera dub14 (,nater stargrass) E MD Charter Boat Field Survey Me Myriaphylim spicatum (Eurasian watermiffoil) Pcr Polamofferon crispas (curty nm:7) 85 Pot Poimogewa ptrfoliaws (redhead-grass) Cd C,-PhY11-- d,.,r,.. I- Citizens Field Obserwition Ppc P.-f-p"anw. Inegap-&-ad) Ppu PlIsmogetan p-jilar (slemder porKh-W) DATE FLOWN 10M9186 Zp Zanakheila pal-ri, (hrmea pond-d) Ngu lVain, 9=datuptnsis (southern naiad) VIMS Field Survey N Nqis spp. (miad) Ngr Najw 9,acdUma (natacit U'S.G.S. Ec Elo4ta canadenns (-an elodea) C Chars rip. (.unkgl..) Va Vaills-ri. am,mans, (wild -1.ry) SCALE 1:24,000 0 ."r .1 0 141 SUBMERGED AQUATIC VEGETATION 1986 1 1:9 25, % AA2 BAZ CA DAZ 7k, c % SPECIES SURVEY STAMNS Z."'. (selgraw H@ Hydn,11. -kX- (hycldRa) MD-DNR Sunney Station ST.GEORGE Rm R@pm -on, (,icigeon crass) Hd Herenunthm dubia (water starwass) Me myrwphyll@ rpk- (Eurasian walenrMcil) Pcr Pms,nw- 6$11$ (cunY Pond-d) MD Charter Boat Field Sunney ISLAND, MD Pof P.-r,- p,,ffia- (,.dh.ed-91.s) Cd Cenatophyll" de-um (coontad) Citizens Field Obamation FpC F-g-s X-- (.W pondweed) PW P.-Sts. p.n&, (sbdel P-*,.d) 89 Zp ZamkhcUa palusidt (horned pond-c!) NgU Ngi. (-them naiad) A VMS Field Sumey N Nqjs-pp@ (.id) Ngr Naim swillima (mlad) US.GS. DATE FLOWN 10/19186 Ec Elodea ca-dema (oor,rhon eloda) C Chsr. p. (-skg-1) Va VaUmfia @Hcons (vW cele@) SCALE 1:24.000 142 SUBMERGED AQUATIC VEGETATION 1986 W -Z A 2 T I I I SPECIES SURVEY STATIONS POINT LOOKOUT, (e.1g..) Hv Hydrifia venwiffam (hydn2a) MD-DNR Survey Station Rm Rwpi. ..H,La (.ldgeon 9,a.a) Hd Hetemndmm dubla (water StargM35) MD Charter Boat Field Suivey lAs myHophylim spicarwn (Eumolan latem"l) Pcr Po-,eion ,up@ (curly pc@dwead) MD Pot P-g- perfolla- (redhead-grass) Cd Ce-ophyuma d-- (c@tml) CAtiens Field Obamation Ppc Po-oge@ p-Ima- (sago Pordweed) PPU Po,dmojrelonpusill@j (sWiderpondweed) 90 Zp Z-n-lich,11. (horned wndweed) Ngu Ngiaj guadalW@& (southern naiad) A VIMS Field Survey N NYa,,pp. (raad) Ngr Naj- g,-Illia (-lad) LLS.G.S. DATE FLOWN 10119186 E Eladea caaa*@fj (codirmon elodea) C Charap. (-.kg-) .c Va VaMmfia a-nk@ (wild celeM SCALEL24,000 143 UNITED S ATES KEDOES STRAITS QUADRANOLE RTMENT OF THF IWERIOR MARYUND DEPA 7.5 MINUE SERIES ORTHOPHMMAP (rOPOO-q OEOLOGICAL SURVEY SUBMERGED A(IUATIC VEGETATION 1986 darn 7. NA2 3 C... x 10A LA C) -ZZ 0 KA3 i JA3 1A3 % R Z t + OR, P. 'r_r_- @!-OA4 R :--z]rA3 2 Lj@ S T R I T S D T- + + -AEe 7 C@ c- C SA4 /R YAP SPECIES SURVEY STATONS Z. Z.- -ft. (oft-) H, Yy&(Ua (hydrate MD-DNR Survey Statim KEDGES STRAITS,., Ft. Xvp@ -flb- (@Woe- or-) Hd Aft-kem dbia (wmw waw@) MD Charter Boat Field Survey Me My,@phyft@ vk- (E-.W @96,.Illblll Pcr Por-teim cupw (Curly pon&) MD. PDf P-8vr-"FfoUaW (Millood-g-) Cd C-PAYM@ d- (c-ftld) Chime FmId ObmVatim KEDGES STRAITS. MD. Ppc pot-v@ P`C@w ("90 pw& Ppu Po-r-'109 PRXHW (swoor por4weem VFAS Field Survey 91 Zp Zomkhefia pa&sf@ (hormd poncb@d@ N9U Nww' dbW-m N Xqjw App. (n&Md) Ngr N@- -,U,- (-W) US.G'S. Ec Bodea e-k-U (corr- elodea) C M. (-u-kg-) Va Valtuw@ -,rk-l (wdd colary) SCALE 124JO00 wo 0 144 UNITED STATES TERRAPIN SAN. POINT UADRAN.LE DEPARTMENT OF THE INTERIOR MAR LAND-@OmEpsirr CO. GEOLOGICAL SURVEY SUBMERGED AICIUATIC VEGETATION 1986 7.5 MINUTYE SEWES (TO -.IC) I E. 3-A FA3 DA EFLOWN 7 DA E FLOWN H 4- 2- -4 z Rm '-EA Bk4 N. DATEFLOWN 2-p=i ... ... . . ..... SPECIES SURVEY STAMNS Zm Zossem marbia (selgrass) Hy Hy&iUa werticiftwa (hydrilla) MD-DNTI Survey Station TERRAPIN SAND"- RM RAwpla madlisur (Widoson gresul) Hd dbis (Waw, mrgra.) MD Charter Boat Field Suruey Me .44yriophyUss; jpkau- (Eurasian watemillbil) Pcr PaNpruplewn crop= (curly POINT, MD. TEI@R'@LIN. St@@.MIM, "G. Pof P-rNwN,,f.1ia- (rdhead-q-) Cd C-ophylf-, de- (c Citizens Field Observatim PpC pou-vVeto. Mjissrw (sailo pmxWmd) Ppu polmopt" purww (slam Zp Zamkkefia paijurtrit (herried porKtweed) NgU Najw guadaf,,Nwi, (sournam 0aiad) VMS Field Survey N N-J- pp. (.isd) Ngr Najw rwiffima (,uuad) EC FJo&a -ademb (conwron ekxJea) C Ck-- A,- (-.kg-) Va ValUmda -kasa (Wild celery) SCALE.1:24.ODO 0 145 SUBMERGED AQUATIC VEGETATION 1986 -e Manokin r. 0 AA1 Up", Hill DA GA2 *,A 2 0 6 K ---------- N 0 L L A N "j.", K82 182 LC3 F 14 HB2 YA3 JC4 4 A83 E834 084 hB2 11 K L E Y S m I CB3 NB M E S S E X 0 a QB3 RB2 U83 SBI BC2 TBI % AC4 7 MARION ZB3 R N S @!7 'Ilk It Hopewell SPECIES SURVEY STATIONS ZM Zosmm m@na (aelgrese) H@ Hydill. -1wWw. (h,ordla) MD-DNR Sumey Station MARION, MD Rm R@i@ -rilima (widgeon grass) Hd H,11-lh- dbi. (water stargi MS Mynophyllum spical-, (Euresie, alemiffoil) PCf cmpw (cudy ponoweed) MD Charter Boat Field Survey Ppf P-,-. [email protected] (rodh-d-gras.) Cd Ceaiophyll-m deme,sum (coorteil) Citizens Field Observation 93 PPC P,-,ge-x,nmi- (sepopondweed) PPU P--gel- p.@ill., slender pondwead) Zp Zo-khbf,, p.l.-i, thorned pondweed) Ngu Nqj.., g-d.1w,.- eWhern n.id) VINIS Field S-ey DATE FLOWN 10/19/86 N Nj,, pp. (naiad) Ngr N,., ,.cilh.. (-led) ft Elade. -d-i, (- alcolea) C Ch- (.u.kg,-e) U.S.G.S. Va -H- (wild -Wrl) SCALE 1124,000 1 0 146 UNITED STATES EWELL OUADRANGLE M-Y-D VjRG_A DEP4RTMENT,OF HE INTERIOR SUBMERGED AQUATIC VEGETATION 1986 7.5 MINUT Rl@ 0 G 'S (.T EOLOG CAL SURVEY @!E @RAPHIC) YAI M4 WA2 Rm A Z - MA4 -45 0 (D NT!! IA4 HAB MR... FA4 (GAI 0 G- Rm Ll c .4 A-, A- BA4 Rm .14bn r r\ DA3 MR. 0 E N SPECIES SURVEY STAMNS /-v, Z. ZmEra -ri- (.1prass) Hv HYdHHa -firdfala (hydr#IQ MD-DW Sumy Station EWELL, VA.-M@"Z--,-, Rm Awpla @1@a (widgeon grssE) Hd dmb@ (Water sworas,,) M3 Myriophyu_ A*- (EumWm wal-iffoil) Pcr Pot-ge- civw (curty ponoEws@d) MD Charter Boat Field Survey Pot pol-r- prf.UE- (rclh..cl-g-) Cd Cemophy&m dewr- (-tsfl) Citizens Field ObserVation Ppc Z-khcua;7,tris (hmed pondweed) Ngu NVw gmd,[Wewij (smdhem naid) VMS Field Survey P-p. pwow. (seao pond@ed) PoU P-0- pwdis (slender pondwwd) Zp N X,;f- pp. (naiwd) Ngr NM-,,-0- (naiatd@ EC Eloka cawdtwb (@ elDd*8) C Ch-p. (mskgms) Va VaLfitmda -ka- (wild celery) SCALE 1:24.000 I 'ILE 147 UNITED SIAI. GREAT FOX ISLAN QUADRANGLE MENT OF T.E INTERIOR MARYLAND-DIRGINIA GEOLOGICAL SUR Y SUBMERGED A(IUATIC VEGETATION 1986 TA4 UA2 Rm VA4 A IS Rm m WA4 Ior I XA2 NRm OA3 Rm R EB4 E 11, WA LAI @A2 R + + EA4 M CA4 7. Rm Rm BA4 AAI Rm Rm B2 ERm f - 6Rm DE14 DATE FLOIA. .-7777= SPECIES SURVEY STATIONS Zm Z... (.12r-) Hu HydUl. -kuw. (hydw.) MD-DNR Suruey Sh*n GREAT FOX RM R@ppia -fd,- (widg- gr@) Hd He-41- dbm (mlar SWWm) I ISLAND, VA.-MD. MS AlpiaphyUm Vk@ (Eui- w&Wrffdffdo Pa p-r".. m". (curly pondwow) MD Charter Boat Field Sunrey PDf P-f1-p,,fWW. (r&&.6d-g-) Cd CemoPhYgum dr- (coontall) PPC P-S.-p-b- (@Wpdwesd) Ppu I : Citizens Fold Obsembon Zp Z@hBa paimilra (r-d p-Weed) N9U )V4- jL vivis Field su@oy N V.J- vp (r-w) Ngr Nw- I-M.. oww) U.Sas. EC Elodea camadmh, (@ sloclea) C ch- V. w-W-) Va vdfi-@ -@_ (wild ..Iry) 6- SCALE:24AW 0 W_ ows 148 UNITED STATES CRISFIELD QUADRANGLE .A. DEPARTMENT OF THE INTERIOR IN GEOLOGICAL SURVEY UTE SERIES (TOI'DORAMC) SUBMERGEO AQUATIC VEGETATION 1986 w Z1,11- C /R, SA3 A C1013 Rm S... C, Rm 21 Rm lp, A2 R- + Zm S -- - -- - -- - -- __wx 4 Z@9 DATE FLOWN SPECIES SURVEY STATKM ROAD -WFICITION Zm Z1,NvR alf- (RINIINNIS) HV Hy&ffla wrixigna (hydrMau MD-DNR Survey Stalton -I-CRISFIELD,- Rm Ruppla, madelma (wkloew onu,s) Hd HN,-Am dabia (Water sauciness) VA.-MD. IVIS AfyriophyI spka- (Euraoian walerno" Pcr PoNvnotelm crispw (curtv pndW-d) IVID Charter Boat Field Survey PDf Po-Vft,I @Ifoft- (redhead-oraws) Cd Cemeophyfiiom de- (o;oontaff) Citizens Field Observation PpC Pgjanogeto pectmlw (sago pondweed) PPU P-won P.,X. (Slonsa, Pnd..d) Zp Zanmkkfi.::-,f, (horned podweed) NW JVq-,-dhq,-f, (801 naiad) WAS Field Survey 101 N V.J-,pp. (naind) No, Nj. p-Mb- (nalmd) U.S.G.S. ED EJda camadeAn!,, (coI-ion elodea) C Ch-.,P. gm.) Va VaWwrja -f- (Wild celery) SCALE 124GOO "ILE 000MM) ip OWN 149 UNITED S ATES REEDVILLE QUADRANCLE ..@ARTMENT OF THE INTERIOR NIA SUBMERGED AQUATIC VEGETATION 1986 ?.5 MINUTE SE GEOLOGICAL SURV ? -s- .-01 RE,t T 0 41 r ell, &x A,. Rm EA2 A2 7 R- . . .... 7@ F54 -A R V E IS- N ECK I V G R A M B_ A I r r DA4 4;i, Zm 4Z A3 _8 I I N 1, @c ORM DATE F 71 w 3'7 SPECIES SURVEY STATX)NS . ...... Z. Z.- HV Hyddla wnwiflaM (hydr,U) MD-DNR Sumy Station FIRl Rvpw (@idgemn g-) Hd ff-them db14 (@ staWan) Me AfynophyH@ spk- (Eurasan watannilloil) Pcr P-v- @dv. (-ly p-d-W) MD Chalter Boat Field ...y REEDVILLE, VA. Pot P1-V-Nf1LI4fW (mclhead-g-a) Cd C-ophyll@ dr- (-Ulli) Cifizerls Field Observation fl@!E ,!E@VILLE. VA. Ppc Po-ojrcI-xct-uw (saWP-tweed) Ppu Po-og-, p,,Ww Islander po@), ZP Z-AI& [email protected] (homed poncleed) Ngu Nqi. g-d@hwi, (-them n.W) A VMS Field SurVey 106.7--- N NW-pp. (-led) Ngr Nqiw trwillona (miw) US.GS. Ec FW--&.u C Clwa V. (muskgr-) Va VWm4, @nw@ (,ad ceie,y) SCALE 124DW 150 UNITED STATES TANGIER ISLAND QUADRANGLE VIRGINIA-A MACK CO. EPARTMENT OF THE INTERIOR 7.5 MINUTE,,SERIES =APHIC) GEOLOGICAL SURVEY SUBMERGED AQUATIC VEGETATION 1986 On DA4 Ag m 0 @A GAI > 7. WAA 1A2 Al + @/P N f/7 -S BAI .7 AA3 4s, hh@ --DATEFLOWN- j SPECIES SURVEY STATIONS zm Z- .q" (-Ig..) Hv HyddU, w@fflaw (hyd,illa) MD-DNR Survey Station RM Ruppia madelma (widoem a-) Hd H-hem dbi, (@te, Inarwass) MD Charter Boat Fold Survey TANGIER IVIS Myriophyll- spicanan (Eurasian waterniftil) Pcr Pain-geton crivw (curly Pondweed) Pot Pot-remperfolialms (redhead-gms) Cd CeWophyllm de- (cconuMI) Citizens Field Observation ISLAND, VA. PpC Potmogeton P-dnatw (sW ponftvW) Ppu Pof@gefom p@fflw Islander Do-Weed) zp Z--khiis (horned pordv/sed) NgU Nqiw guadaimpewis (SOuthOm naiad) A VINIS Field Survey 107_ N ftj-pp. (.id) Ngr Nm-pilft- (naisd) U.S.GS. Ec EIdea .. ul-Is I- bd.) C Ch-p. (m,skgrass) Va Vallumfia s-d- WId celery) SCALE 124.000 .5 0 CYD- OWN 0 151 DEPART UNITED STATES CHESCONESSEX OUADRANGLE 4@ VI-N A-ACCOMA@@CO., E (To MENT OF THE INTERIOR 7.5 MINUTE'SERIE, EOLOOICAL SURVEY SUBMERGED AQUATIC VEGETATION 1986 A HIC@ `7 \3 o' UE13 GE12 HB21 E81 F T 184 DB3 ZA2 AU5 JE14 o B A Y 'RB4 A4 1. + PB x N4 VA3 TA4 4 RAJ C@- UAI LA4 KA2 IA) 4 DA3 7 DATE FLOWN AAI, B I CA3 a- SPECIES SURVEY STATICINS Z, Z. 7.,.. wi- (.Ianum) Fh, Hydnfla -kILA2W (hyd,4a) MD-DNR Su-y Station CHESCONESSEX, Rm Ruppia manum (widwon wsstII Hd H,-,h- dbio (Water roargra.) WD Charter Boat Field SurVey VA. Me Mydophyllm Apkanon (Eurasian watemum Pcr P-ogva, cdpw (curly pondimd) Pot P-f'-perfohatur jredhead-grm) Cd Cmvophylf@ dewjum (cocmail) Citizens Field ObsenratiOn (@@@S,!EX. VA. PPC (asWP=Ne*d) Ppu Pwo,not,- pilf. (@Iendw pondweed) Zp ZamkAefiapa4-4 (homed paviWeed) Ngu Ve= guadobw-, (@them miad) A vrAs Field suVey 108-- N VqJ- pp. (nhid) Ngr Nqj. g-iMo (.W) U.S.GS. Ec EJ.&. -ad,.b (common, Modea) C Ch-.p. (.uskgrass) @UE13 Va Voibumda @nfc-o (wW cewrY) SCALE .1:24,DDO 152 UNITED STATES PA KSLEY QUADRANGLE 13EPARTMENT Or THE INTERIOR lip-N OMACK CO, GEOLOGICAL SURVEY SUBMERGED ACIUATIC VEGETATION 1986 75 m, 'A&AIC' -.1C N.TE S ES (TOFOO QB4 TB3 'P84 BE A S' L Ely B A Y 08 71- x WB: LE12 M83 IB2 NB3 GB2 F84 G-- 7X6 G-- EB C84 BB2 tl@M WA2 zm VA3 3 SA3 z7 S. OA3 RA2, MA4 RA4 GA4 a + n -.4 + Zrn FA'3 @7 zm 4 c*7 - .............. .10 .17 DATE FLOWN -@C-I;SSIFICIIION SPECIES SURVEY STATIONS "'ev, zm zoln"s malfto feelgress) Hy Rydffla -dcXWa jhydrilla) MD-DNR Survey Statim RM Rppis e-ftbee (WWQ- 0-) Hd Htm-kem dabia (Wassr stargress) MD Charter Boat Field Survey PARKSLEY,VA. MS MyriophyUm jpkalm (Eurasian watennifto Pcr Po-ottion crispw (curlY pof po-,,@@Ifofia- Cd Cmtphya. (c Citizens Field Observatim PARKSLEY. VA. PpC P-sSeW. pecib-w (sap pondweed) ppu Po-nogetonp-aw (31@,. 11 Zp Zaamichelia pabstrU (Inmed pondweed) Ngu Najw g=dakwmi, (-thenm naiad) A VMS Field Survey 109-@ ..... .... N N.J. pp. (.led) Ngr Nvj= ll,-Ulim, (naiad) US.G.S. Ec Efodea canademb, (@dasddn eddies) CChars sp. (muskgrass) Va valluxtria a-rkana (wild celery) SCALE 124.000 0 153 UIITIO r AT@r DEPARTMENT OF HE INTERIOR SUBMERGED A(IUATIC VEGETATION 1986 IRVINOTON QUADRANGLE DEOLOGICAL SURVEY ""INIA 7.5 MINUTE SERIES (TOPOORAPH'q 0. 4 L) -0 AA ;olc J. .............. -A zM Ft S- I A ATE FL OWN A, SPECIES SURVEY STATIONS MD-DNR Survey StOw Z. 7-Ama narz- (-W-) H, HydM& mcdh.. (hydrills) "U== Rot ftippla @Ibns (-Kio.- g-) Hd H-them dubia (water strWass) I IRVINGTON, VA. Me Myiophylhoa jpkatsm (Eurasian watarmiltod) Pcr P-ji,im cmp@ (curty MD Charter Boat Field Survey Plot P-plan xrfoHaw (redhead-graws) Cd CimiophyUWn d- (c Citi@ena F.Id Observati- IRV "!:T@ "@A; PpC Pvtonropm. Xclinalw (sago Pondweed) Ppu P.-og"on '.'Ef. Zp Zsns@hcfio palwtu, (homed pordweed) Ngu Sojw g-MVtwu (s-lbern naiad) A VIMS Feld Survey 2. N Nqf-pp- (nai.* Ngr ivqj@ s-illism (naiad) Ec Erodes cana4mb (common elofts) C CA-,p. (-skg-) U.S.G'S. Va Val&wd, -kons (wild ce") 6- [email protected] ocq] OWN. .1 0 --a". 154 UNITE STATES FLEETS BAY UADRANGLE DEPART.ENT,.F THE INTEM. SUBMERGED ACLUATIC VEGETATION 1986 VIRGINIA EOLOG CAL SURVEY 7@ MINUTE SERA@ @0=P'-Hill ............ BB3 %51 C. 7 ZA3 p c -.7 ---- ------ '0 "v 4, v R oA2 N .4 Zm NAJ + 3+ zm FAI go Rm DAI .-k L I T T L' B A 15A3 c V L E E T S 1\5 L A N DATE FLOWN C-1-ON SMCIES SURVEY STATONS Zm 7-fta --I- (eebran) HV H@Wfla wrticillato (hydrilla) MD-DNR Survey Station Rm Awpi. --id.- (..dg- U-) Hd H-them dubla (Water slargra-) FLEETS BAY, VA. Me AtyriophyUm Vk- (EuraWon wabenW" Pcr Pat@gcm ctupw (Curly pontd-d) MD ChRrtOr Boat Field Survey Ppf P.,-.Vl- @rftfi- (rdh-ll-g-) Cd Cmtphylh. d- (c-,dail) Citizens Field Observatim FLE BAY, VA. PPC P-8.- pmflmal. (mg. p.WWd) PPU ft-gll- PWa. P..dWeed) ZP Zamkkefia patwtU (horned pondWeed) Ngu nWWJ) AL vm Field survey 112 N JVaj" jpp- (rai-d) Ngr Najw SaCiUbNa (mlad) US.GS. Ec Elodea camademb eloclea) C Cha-p. (-kgra@) Va Va@twrla -k@ (wad celery) SCALE 124PW 0 0170 [3LQ 155 UNITE[) S ATE$ NANDUA CREEK QUADRAN.Ir DEPARTME T OF THE INTERIOR SUBMERGED AQUATIC VEGETATION 1986 'N-_ A___ @', 4 GEOLOGICAL SUR@EY ?.5 MI UTE SERIES (T-RAPHIC) + G@ H E S A P E A-K E KAI B A Y LA3 JA3 1AI -A, 5@ C C C ;A -T1 1 -1 w2wma SPECIES SURVEY STAMNS NANDUA Z. Z-. (-ftniini) Hv HydiUa -VdUala (hydrika) MD4)M Su-y Statim R. Rpp,,, -,S@ (widg- a,..) Hd db&, (-W, StarWa-) CREEK,VA. Me MHophyff@ -- (Euniaim, inStRrindoff) Pcr cnv. (-fy fm Charter Beat Field Sumy NANDUA CREEK. @A. pot (rodhead-grasis) Cd CemtVhyU,,n, dem-n ((, Citizens Field Obsemation 113"' Ppc P.-jr.- (--w pond-1) Pm P-ore- P-siuw (Swd. Zp ZaRnk4a,, pajujf@ (Wned Pord"od) NgU Njw g,,dlWwi, (smthom naiad) VIIAS Field SumY N NW- pp. (-iiid) Ngr Njw -W@a (naiad) US.G.S. Ec FJod,, c-d-1, (-n obdea) C Ch-p. (-,kgr-) SCALE 124,000 Va VWw@ (@Id celtoy) .1 0- 156 UNITED STATES DEPARTMENT OF THE INTERIOR PUNGOTEAGUE QUADRANGLE -N GEOLOGICAL SURVEY SUBMERGED A(IUATIC VEGETATION 1986 VIR-1-ACCOMACK CO. 7 5 MINU 75- 'UTE 6EMES CrO@RAPHI -31 KBI J B3 @44 FB4 C TA? YAI A3 ZA" WA2 ZA VA2 A SA3 UA2 4,% j Q A 2 Al+ 8. A A K., k Rrr6 C'- 5 PAI LA3 Fir C SL u I -'N E TK A4' C JA4 N ...0 10@4 -1A1 wo DA3 EA4 -A j f C >/ ............ L C C c . .......... 'A' DATE FLOW 6/mm SPECIES SURVEY STATICINS D C@ZS71'1@1 Zm Zw'- Wt.. (-4..) Hv Hydrifia n,nkmaw (hydrima) MD-DhR Survey St&tbn PUNGO@'E'AGUE',"-@- RM RWpio marillma (widgeon gms) Hd H-h- dbia (wste, atmq;rass@ Me Mplophyllm spic- (Eurasim waternd" Per Poss-ge- cdjpw (curly pOndWsed) MID Charter Boat Field Survey VA.7@ Ppf Pw-r- p@dofiw. (reftiad-g,-) Cd Cenuophyll- cf-rnun (coontaff) Citizens Field Observation PUNGOTEA UE, VA. PPC Pwa-grlwi pcfiW. (sW p-tosed) PpU Potmogetm pwitlus (slender pondweed) ZD ZwWkheba palwInir (horned MKIWood) Ngu Mvw ewdakwwis (souftm naiad) A vms Field survey 114 .1. N N41-pp. (.Id) Ngr Now -iffim, (naiad) UZ.GZ. EC Fdd,. -&-b (c- bd-) C Ch-p. (-.kw-) Va VaLli-ria wmrk@ (wild calm) SCALE 124@DDO 00[1 W 0 we Sp 0 1 K-TER 157 DELTAWLLE QUADRAMrLE Uf4ITED STATES TERIOR SUBMERGED AQUATIC VEGETATION 1986 VIR INIA DEPARTMg OF THE IN 7.5 MINUTE RIES 'TI-1111C) .. [email protected] SURVEY @E V M' 17- 1. A2 .6 ------------ -- --------- R I -------------------- --- - ------------- "14 Zm r, zIn Zm W + iQ ..a B A Y 'i,N _X-1z % IA X.V, 4 c1Z R I VIE AA2 4m GODPRrr Zm* I A Y I s 5A 0.@ zm A'@m DA EFLOWN zm 1/15/m P. N, i - , . '. , ". G SPECIES SURVEY STATIONS Z. 7.1- @ (aelgra.) Hv Hydriffa ... @Qwa (hydrift) D-DW Survey StOw Rm Rppla NNaNtMM, (wklgW grass) Hd H..-,h- dbla t-tal trw-) MMI) Charter Boat Fieldsu, DELTAVILLE, VA. me Myjaphyflan, kokanan (Eurasawn watenniffoul PCr PoInNI cupW (CUrIY PWNJ) PCt pojaaN,,tuNI (redha&"nums) Cd C-phyff-d-r- Ciftens Field Observation ppC p-o,,N,MnNnw (@pordwwd) Pw P@,Ww (slandar Dondvaad) Zp Z-.khUpWnru, il-redWld@) Ngu Njm gwdlftwu (soLrthem naiad) VMS Field Survey N Nj.,pp. (-id) Ngr Njw trwilUm, (miad) LLS.GS, Ec Elda -d- I- CCh- 1p. (-.kgr-) Va VW@fia -,deana, IMId calory) SCALE0124.000 o GID- ak, @50 158 UNITED S ATES JAMESVILL DEPARTMENT OF THE INTERIOR VIE QUADRANGLE R IA GEOLOGICAL SURVEY SUBMERGEO A(WATIC VEGETATION 1986 7.5 MINUTE SERIONN 01-RAPHI 10 Z@A2 4 x 31 CL CREEK Iw, TAZ' 0 v SA3 CA W R A?- 36 NZS ...... ..... zj@ SCARe.M.U u K &dA JAF"" CAZ DA3 44 @o CAZ W Z 0 J@ A2 0 (@A2 SPECIES SURVEY STATK)NS ZM 7-ftm madw (001grign) HV Hydnfia venkillata (hydrilla) MD-DNR SurVey Station RM Rwpia mwid,,M, (Wklp@ 9NRIMI) Hd H-diem dubk (-wwr 3tvaraino) MD Charter Boat Field Survey JAMESVILLE, VA. 143 MyriopkyUm EUraslan watinft" Pcr Po-sewn c@pw (curty pondwood) Z ,Df P-M@U- P.,fu.- Cd C-Nphylf- (c-taol) Cifizws Field Otimmation JANESVILLE, VA. C Polmogeom pecdnww (woo pordweed) PpU Pot-gcw,,,w&u (slorderpondwimd) Zp Zmnkhefia pahui@ (hoi-I Pm&wftd) Ngu AFW= gmdakwwu (iiaAhem naW) WAS Field SiUmy 119 N! Nw- pp. (.am) Ngr Najw (Miad) Us.0's. Ec Eld,. ra-*-L, (@ -bdoa) CChant 1p. (mkg-) Va VaZ"rfa -ka,M, (vAid coWrY) .1 SCALE0124,000 0170 Eyj- "ZI 0 159 UNITED STATES WARE NECK OUADRANGIE EPART.E.T .1 E I.TERI.R V'- "'A SUBMERGED AIIUATIC VEGETATION 1986 7.5 M;NU-IE SERIES (TO@RAPHI@' GEOWGICAL SURVEY ... ....... -"j _j '@Z .......... T, it @"7 7 lb r 'U 0 R --* 'R. //JAZ 2@ 'kA2 A c LA2 'p -MAS HA2 NAI GA2 DAT FILOWN A CA] "A SPECIES SURVEY STATIONS Z. 7-- mi- Hv Hydrilfa vertwUlata (hydrIlla) MD-DNR Survey Station . ......... Ft. RpM -dd- (W.19- 9-) Hd H-mera dubin (Water awwass) MD Charter Boat Field Survey WARE NECK, VA. Ms A(yriophyllm 4@cWm (Euramm valenm" Pcr p-p- "Upw (wrly Pot P-VIm@rfvI(c1w (redhead-griwa) Cd C-ophyllm dr- (c Citizens Field Observation WARE NECK, VA. PpC Po-,,.-,-,-- (.QpndW-d) Ppu pw"'"- p"tau (81@- Zp Z-0,11a pliatfis (homed pondwead) Ngu Njw Z-dj@wjj (iio,,Ihsm naW) VMS Field Survey N Najw rpp. (naiad) Ngr Neyme,-011 (miad@ US.G.S. Ec Zlod- --&.4 (- b&.) C Char-p. (-kgr-) Va V.Ilisda -,k- (.ad ..law) SCAL%24.000 ocl 160 UNITED STATE MAT EWS QUADRANGLE ..@ARTME"T OF THE INTERIOR 75 MVIRGINISA MATHEWS CO. INUTE EVIES (TOPOGRAPHIC) EOL I SUBMERGED AO.UATIC VEGETATION 1986 UR@E@ 16- '30" cow 4 7-1 T C:) 1Zi 0 go N _.4 TEFLOWN SPECIES SURVEY STAMNS RND R-01 ZM 7-ftir oriaa (00191M) HV Hydga mnklUafa (hydrilla) MD-DNR Survey Station ....... Rm Auppla mariUma (widgaw grass) Hd H,-,h,. dbi. (-ta, targ-) MD Charter Boat Field Survey MATHEWS, VA. Me Myriopilytim spirwjpp, (Eurealm walemillkil) Pcr Poto-geton cri:pw (curly poriftaid) PpI Pvtgg@ perfoliatw (redhead-graia) Cd Cewophy1fum dew-i (coontall) Citizens Field Observation ppe po,-p- @cd,,,,- i.W PW-d) Ppu Poi-Stroi puslifia (aiiinder pondweed) Zp Zaaakkefta palwiris (homed ponihised) Nial N@vw,,,odojupewis (ilOuthern naiad) A VW Field Survey N Nqj- pp. (-W) Ng, No- -Ulf.. (@) # US.G.S. Ec Elodea caw*wl, (comniiii 610daa) C Choro sp. (-tki;,M) Va Vaiss, ja -k@ (add celery) SCALE.124,000 0 161 UNITED STATES FRANKT WN QUADRANGLE DEPARTMENT OF THE INTERIOR vj@jrlj -NORT-1AMION CO. GEOLOGICAL SURVEY SUBMERGED ACIUATIC VEGETATION 1986 @",TE SERIES (T0f0GRAPH11 0 C- A S3 qDB2 L ES 3 0@ !Rzrn XA E L L T T 5/ N E C K UA2 G, + y 1p. Eii p A2/ 14 A5 'y 3 0 w- ck) C9 NA4 A2 i MAI 1A i@ I I'S IA E Qzl- EA3 T c@ IF I HA3 4, DA3J G131 y CA3 3 0L T 0 .1 f DATE I.N - R- CIS&F-T101 SPECIES SURVEY STAWNS Z. z.,- mffb. IV.-) HV fly,*r0k, -&W- (hydIffila) M0,13INR Survey Staborl Ft. Ruppis --rid- (W-19-- g,-) Hit dbur (,ater Wargrass) IVIS MyHophyHrul Apk- (Eurasian walaryiftill Pcr P-s- c4,pw (curly EL) IVID Charter Boat Field sumey FRANKTOWN, VA. Pot P,,-VfmXf,1Iuw (mbead-griuml) Cd C-ohyHu,,, dew-m c 0) Cflizerls FwId Obseryation FRANKTO.N.VA. PPC p-oor,ul @Mw (@ pwidweed Ppu P- 'o. P.,dl- Zp za-khaw pWurm, (h-rd p-weed: Ngu Nm- -rw'ddWwur (@-m nalad) WAS Field SurVey, 12 4 N N,,j. pp. (rulmd) Ngr Nj. "achlb.. (,ulmd) U.S.GZ. EC Elo*a camad,@ elodea) C Ch- p. (-.kg-.) Va Vilumia -k,mul (vM coleV) SCAU 124= 0 0 U 162 UNITED T EPARTMENT OF@TTAIE`aMTMUOR NOROE QUADRANGLE I GEOLOO, CAL SURVEY SUBMERGED A(IUATIC VEGETATION 1986 -3- 5. Xw ,-T Q) Tm 0-141 17-W -r-5151, ilkl@ R .............. . . . . . . . . . DATE FLOWN R- SPECIES SURVEY STATIONS 'NORGE,VA. k\1 Zm zor- mm" ("Agnm) HV HydriMa wrtklWa (hydnUR) MD-" Survey Station R. Rqpi. -d1h- (wk*.- or-) Hd H-aem dubo (water euv"m) Me AfyriophyUum spk@ (EuraWm walam,11foll) PCr Po-ge- crUpw (Curty pondweed) MD Charter Boat Field Survey PDf wf.1me. (redhad-ar-) Cd Cemophyll@ downm (coontall) Cftens Field Observation NORGE,VA PIPC P.1-p- P..kt. (mo w-mved) PW (.Wder pxM*W) A vims Field survey Zp Z..kA.Ha pallrb, (11-d pond-ed) NgU Nqj. Z-d@IW-A. (-"-. relad) 1 111 Nqjarpp. (.id) Nor Najw grwdw@ (miad) Ec FJo*a -*@ (-nTwn elodea) C Ch@ sp. (muskg@) Va Vaij!U-ria -i- (wild calory) SCALE.124,000 w Rod.* 0 163 ^4 UNITED STATES ACHILLES. 0 UADRANGLE MENT OF THE INTERIOR 'N'A GEOLOGICAL SURVEY SUBMERGED AQUATIC VEGETATION 1986 75 MINUTE SER- 70-- ti VB3 0 LB Rm MB4 Zm R Z F84 Z 2 XA3 D93 UA AA @7 .;,r -Ai4 A Zm Rrn 'W V8, .......... 4 A4 El: 4 C, ir NA4 A 4 2@@ LA2 ------- GA4 G V E . A EA4 >".0 C Zm A DATE FLOWN. y 0 R.. E SPECIES SURVEY STATICINIS N, Z. 71- mwtMi (-Wass) HV Hyditik mnkXWa (hydrilia) MD4)NR Survey Station Z.- RID AWk maduma (widow grikait) Hd ffege-idh@ "Ia (mmr sUMgNUU,) MD Charter Boat Fields, ACHILLES, VA. Me Mynaphy&M J*-- (Euniii widamiliffioll) Pcr P.,-, @rD,. (ouny E) Pot P--*-@If@U-- Cd C,-.PhYU- d,-- (o Citizens Field Observation ACHILLES. VA. PPC POI-Nig- @C@4 @ (8090 wrid-sil) PPU Pormoorm pwi&a (Wend Zp Zamkilefta pautris'(homed M-0-0 Ngu Vqf- (wft. naiad) A mis mm Survey 131 N Nqj-pp. (neiad) Ngr Ndw,-Uhm, (nalad) EC Eloka camadtash, (@ ebfta) C Ch- v. (ii-konus) Va Vdhmn, -M@ (wild @Iary) SCALE 124DW OC70 CID 164 UNITE STATES NEW POINT COMFORT GUADRANOLE DEPARTMENTIOF THE INTERIOR V- NIA 0 1.1 MINUTE SE EOLOO CAL SURVEY SUBMERGED ACIUATIC VEGETATION 1986 ....... RMS.Z0 =RAPHIC) C x 'AAI 0 ,DA2 M 7 Zin U %. AZ JA3 ITI + RA4 C' rh A M QA2 .4i NAI MA4 Znn Q; Zrn IIA XA4 .61 BE12 A ZA4 Zm. ABI YA2 DA E FLOWN 7/15/BG 77 -0, -0 C-F-ON SPECIES SURVEY STATIONS Zrn Z.- -'aa (aalgnass) HV HY&W. -Ikul.. (hydrft) MD-DNR Survey Station NEW POINT- "Ad Fun Jtppk mada.. Wifteon a,-) Hd Ra-A.. dbi. (wabar WW-) MD Charter Boat HOW Survey COMFORT, VA. Me Afypjapky&;n e4canow (Eurasian wahungfoll) Per (curly pondsed) NEW@MIZT Pof Potgefm perfobalm (redhead-Grass) Cd C-mphyLban d- (coontaff) Citizens Field Observation VA. Ppc (sawponsveadi Ppu (Sw@da'ponlaaw) Zp 2W,,kkUa paf-Irt, (homed P-dweed) Ngu N4jw gwdaj@wjs (swftm naiad) A vus Field survey 132 N Vajw App. (naiad) Ngr Nojw 1@fflima (naiad) Ec Fjqdca caudad, (cohma, ebdes) C Chara sp. (muskarsda) Va va"ria -k@ (wild calory) SCALE 124AM Oil IN a Ems, .3 165 UNITED S ATES CAPE CHARLES OUADRANGLE DEPARTMENT OF THE INTERIOR SUBMERGED AIIUATIC VEGETATION 1986 VIROFNI-N-NAM-N C. GEOLtLCAL SURVEY 7.5 MINUTE SERIE. (Tc7,RA-'C ..a lall' J, J a- .. ... ............. . Co HAI IA4-' Zm JA4,@' a ..a FA4 + + KAI E.A. j Z 19 ICA2 m "ai yj 42 c DATE FLO- J SWIM @T- SPECIES SURVEY STATICINS Zm 7- ana. (--ill-) HV Hy*91, wnkillata (hyOrMa) MD-DNR Sunrey Station Rm Jtwp. -rilima (..'a.- gnaua@ Hd H-A- dbft Iaala, ftagraaa) MD Charter Boat Field Sumay CAPE CHARLES, VA. ms myHophyuun e'k- (Eurasian amitanallov) Per Pora-g- dWm (curly Pmdwaad) Pot P.,-",- dow- (rdhesd-grass) Cd C-ophygm al-- (coonuafl) Clfizens Field Obsemation CAPE 1"@RL@l pt ;VA. Ppc P-0m, P-bwau law www"di Ppu Paja-,- pciaw Islander Pond-1d) zo Z-."'I. pal-ris (horned pwWwftd) Ngu Xqja@ wdkma- 'southann naiad) A VMS Field SwM N N,;,a, .0p. Ngr Nam,,actuilna Oelad) U-SGS. T- rc Iod.) C Ch- V. (,nuakgraas@ Va VaUu-H. -,k- (wild c.1m) SCALE0124AOO 60 wo 0 166 UNITED STATES CHERITON QUADRANGLE DEPARTMENT OF HE INTERIOR SUBMERGED AQUATIC VEGETATION 1986 VIWINIA-NORrHA-ON W. 1 75 OEOLOO CAL SURVEY MINUTE SERIES (TO@RAPHIC AA4 x__ Z z T- J\" C K r_1 L ........... rq fli a.- Flo ht 4 04 ED 40 All 0 . .... ....... ...... ....... . ........... Idle _---------- 41@ SPECIES SURVEY STATIONS MD4)IIR Survey Station Zm zwore ad- (orwalail Hv Hy*Wlt @Hkglatls (hydrilla) . ..... Rm RWpla marlibeir (WkIPW grear) Fill dbi. (,orater slaWaaa) Me AfYr#VPAYMM *kalM MA"Wen Waternill04) Pcr Poterplgemm criWw (cuny pvxM*W) MID Chader Boat Field Sumy CH@R@l '6N,'VA. PDf Poar,,Mgw@ pwrloftaw (rodhood-grass) Cd C-ophyUll,,, d- (coontail) Citizens Field ObserVation @HERI@GN,,VA, Ppc polaaIllripeAMI pathwa, (saw pordweadi PIDU P-s- p-dia; (lIllenli., prh,.W) ZP Zaaakkefia RaWirli (horned porkWeed) NgU Nojw guadahWans (smithern naiad) VM Field Survey 134 N Nqjw spp. (miad) Ng' Nj. 91.0- (-led) U.S.GS. Ec Etd. -bft-) C Ch@ sp. (muskgras,;) Va Va"ria amurkalu, lead celery) SCALE 124AW 0 0 167 UNITED STATES YORKTOWN QUADRANGLE MENT OF THE INTERIOR VIRGINIA GEOLOGICAL SURVEY 7,5 MINUTE SERIES (r-RAFMC) DEPART SUBMERGED AOUATIC VEGETATION 1986 EE @A TOR Z @dh D Q@/ (r C X o: 10 101" re ----- - ---- *y T [email protected] v,@ A'P FORT rVIS 4,@-5 &I I L f T A7H Y -a- J. ...NEWPO _41 0;, t N11 DA E FLOWN .7/1 WES ? SPECIES SURVEY STAMNS Z. Z- anfaa (eelgrase) liv HydnUa vertwdlata (hydrilhl) M04M Survey Staflon Rm Rwpia -Ituna (wifteon gre,ai Hd H,,-,h- dbu; (wa., atenwass) MD Charter Boat Field Surve MS MyHophyllen, ;;,kan- (Eurldlien welarniff0d) Pcr Pa-jet@ ci;pw (curly Pond1weed) y @&R_KTO"W_'@, VA. Plot P-relon ;,,rfoliaw (reclhsackqrsss@ Cd C,-Rhyff- d,-,,- (--fell Citizen. Field Obsemition YOR OWN. VA. Ppc p-oV-pevjna_ (sagopondweed) Ppu P-g-n p.E91- (.1endial pod-ED Zp Zannichella pal-ri, (homed P@d) Ngu Njw jnadaj@wjs (southern naiad) A VM Fold Survey N Nwes pp. (rueid) Ngr Najw gracillima (naiad) US.GS. EC Efo&a can4drwu (common elofta) C Ch-p. (muskgms) Va Vellun,,uria a,heH- (wild celary) SCAL%124Q00 I 'ILE 168 POQUOSON WEST QUADRANGLE UNITED STATES DEPAPT OF THE INTERIOR SUBMERGED AQUATIC VEGETATION 1986 =., ?a MINUTE ERIES IT0i'00RAPHIC) 'A' 0 d"e RV 0 R K- 'QRAP. - ------------ -2' u Azm it 71 I, L, Sad KAI c H-G 013 0 0 flos, 71 ifo *-1. 0r L wJ H C4 IA3 FISH A U-1 - ------ ---- '6-2 'o-07"0, SPECIES SURVEY STATIONS Zm 7,- -ft. (aawass) HV HydW, (hydrala) 9 MD4)NR Survey Station POQUO N Rm AAA* maddInd (Widgeon areal) Hd Hetemthem dubla (water stargride) Me Myrj@ahyll- e4k.- (Euraid.. walennifficil) Pcr p-,- rispw (curly pondWeed) N mD Charter Boat Field Survey WEST, VA. pot Po"I'Maref"M Perfou"war, (redhead-gridia) Cd Cemophyffum de-sm (coontul) Citizens Field Observaborn POQUOSON WEST, VA. 140 Ppc pwaarlwm- P--,bW- Ww P.-Maied) PpU poldaacronpwinar (slanderpondweed) Zp Zamkkefia palwirb ihmed pondvared) Ngtj Nvjw jrwdafi;pewu (wLdhem naiad) VIMS Field Survey N Nqfw ipp. (naiad) Ngr Naw,-WrIa (naiad) US.GS. EC Elodea camdrasb (ommarnoni 9100m) C Ch-p. (-kg-) Va Vaabmja -kamia (wIM celery) SCALE:240DO' .5 0 169 UNITED STATES POOUOSON EAST GUADRAN LE HE INTERIOR @IRCI- a MENTIOF SUBMERGED A(IUATIC VEGETATION 1986 JE.L.. IAL U.1- 7.5 MIOUTE SERIES (T-RAPHIC) + C H E E B A. y GA2 Al CA2 DA4 @M C." DATE FLMN SPECIES SURVEY STATICINS OSON- MID POQU Z. 7"'- mafi- (Salor-) Hv Hydnlfa wmkIM- (hydrilla) -ONR Survey Station Fun Rwpia nodlb- (wkig- 9-) Hd H-them dubla (,eater staxiWass) MD Charter Boat Field Survey EAST, VA. MS Afyriophylf@ spkwan (Eurasian watem0off) Pcr P-geton edipw (curly PorKWeed) PDf Pof@V@ perfoftanu (redhead-gras,;t Od CewphyUm &- (Coonted) Citizens Field Observation POOU SON EAST. VA. PPC P.-V. p,,,-- (Ilaoo pdwed) PpU Pot-Iogelm pujilfw (Slerlder PorXie-c!) A VIMS Field Survey .to I- Zp Zaeekhtfia pal-tri, (homed pond-ed) Ngu Vajw guadalVewis (southem, nW&d) N Nqj. pp. (neiad) Ngr Najw jr-Meta (Mlad) EC Modea cana*nns (conmori elodea) C Ch- 1p. (.Ukgl-) Va Valli-@ -rw- (wild -Wry@ SCALE0124DW .-t 170 UNITED STATES ELLIOTTS CREEK QUADRANOLE DEPARTMENT OF THE INTERIOR VI-NIA-0irrNA-014 W. OEOLIDOICAL SURVEY SUBMERGED AO.UATIC VEGETATION 1986 7.5 MINU@E SERIES (TO@RAPHIC.) Al ..a AA2 lp it DATE FLMN SMCIES SURVEY STATIONS ELLIOTTS Z. Z..ftn, art- (colgra.) HV HyddUa n,&Waw (horila) PAD-0141 Survey SWM Rm AWW madilooo (wWgW grosa) Hd Hefenvetheno dubla (vatter stargress) MD Charler Boat Field Survey CREEK, VA. Me Myrtophylloos spkan,,n (Eurasian wolonnRION) Pcr Po-gewn crispw (cudy porKwood) Ppf P-ov- P-'Pfiar- Cd C-ophythm do- (cixfflau) Citkens Field Observation ELLIOTTS CREEK, VA. PpC Pwivag- p-Mat. (olgo P-tv-d) ppu P'-"t"p"X= (Sifindiff pon0weed) Zp Zanakhella pafweir (horned pordwood) Np Najw guadak- (=Mom naied) VMS Field Survey 14Z7-- N Nqf- pp. (ndiad) Ngr Nojw racillima (naiad) U.S.G.S. Ec EJ.*a c--A-,b W-) C Ckan@ sp. (invokWaia) Va Valft nerfa imericana (w�d colary) .5 [email protected] L 0 171 UNITED STATES SEND -.A.RA1`i.1. MENT OF THE INTERIOR DEPART SUBMERGED AQUATIC VEGETATION 1986 VIKIZA-N.RT A "ED CAL SURVEY 7.5 MINUTE SERIES Cro-RAr- EA ...... - -- -- b_ . ......... 73@@, 5'. qr, ,2 !@7 + Lj C@ 7;_ SMITH ISLAND-!' J BAY SPECIES SURVEY STATIONS Zm Z-11- (saigniss) Kv Hy&iao trorMor, (hydrilla) MD-DNR Survey Station R. Avp. -ibno I-idgeon grasa) Hit Ar,-Owa dubur fwas, starginas) MD Charter Boat Field SumOy OU 0- IVIS myriophyllun, pkansn (Eurasian -000) Pcr Porunogeron ciVw (curly Pondwood) Pot Folonsoolss p,,js1f- (redhied-gress) Cd C-tophyUmn, d- (coontail) Citizens Field Observation TO NSEND, VA. PpC Pot,unagew-Nclawfu, (Sagopondneed) Ppu pjonrogerom p.,Uha Islander ponchveed) Zp Zonkhelto pal-mr (horned pondweed) Ngu Njm MadllWwa (southern naiad) VMS Field Survey N 111,1- pp* (,!ad) Ngr Narm jr-Wim, (miad) U.S.GS. Ec Fdd,- c .. &-b C chorov. (naukurass) .@E Va Vallunn, a-,nkons, iWild celery) SCALE 1:24AOO IS 1 0 1 172 UNITED STATES HAMPTON QUADRANOLE @IRO 141A , DEPARTMENT OF HE INTERIOR SUBMERGED AO.UATIC VEGETATION 1986 7.5 MINUTE SERIES (TOPWRAPHIC) GEOLOOICAL SURVEY Z 0. 4 N-I 1E. LA4 or --Z KA4 AAI, H IA2 E-5 Z- 4 V v, AP, -01 7@ V D S HAMPT.ON R FLMN SPECIES SURVEY STATIONS HV HydrUla -Wila. (hydrills) MD4M Survey Station Zm 7.,un: -f- 0-1wass) Rm Rw* marlibna WWII" orm) Hd Hetemikera debts (mtOr Stap"aa) I MD Charter Boat Field Survey HAMPTON, VA. me Atyriaphyfies, spkwm (Eurasian -I.I. Per Pote-jeion crispw (Curly PWX6pNd) HAMPTON. VA. POI prrflk- Cd Cemop*y&m dcm,- (coontaill Citizens Field Observation PpC p.,_W- @,bmu. (We pond-cf) PpU p-g- p.,X- Islander por.Wed) Zp Za-kA,& P.1-1,11 (horned pondweed) Nou Netia, ewdak(pewis (scuthem nWW) A vms Field survey N N-jw pp. (nalad) Ngr Njw g-iMm, (miad) Usas. Ec Eloden cmiadcwa (@ ek488) C Cha,e V. Imuskgrass) Va Fafflmja -icama (VAId celery) SCALE .124.000 w weep L 173 UNITED STATES CAPE HENRY QUADRANGLE MINIA-VIROINI BE CH I DEPARTMENT OF HE INTERIOR VIMINUTE SERIES 0 M GEOLOGICAL SURVEY SUBMERGED AQUATIC VEGETATION 1986 7.5 Z T mu C\@@ S A A Y + L Y N N H A A D S :3 0r z a-- -ic A, F CA3 RmZ BA2 z rn;Z m 17 Z LYNNHAVEN DAY G R E A C K 1@ BAY 7 ';Z41 .1 L DATE F10.111-, 7/15@86 kk -v Al SPECIES SURVEY STATIONS A-- Z. 7.1- Hir HydrUl. -Wll.. (hyd,dl.) 40-OW SurVvy Static. u-- R. Jtwk @Ih- Wdo- Q-) Nd H--dur. &bh, (-W irtargre-) MD Charter Boat Reld Sumey CAPE HENRY, VA. me myd-pkyUu,, vk- IEwaWm watemdftM PCr P-j- cijpw (Curly Pm1wiiW) CA E HENRY, VA. Ppf Irrodh.ad-g-) Cd C-phyUu,,, d-- (C@d) Citizeris Field Obeemation PpC p-og- i@sw pmMsed) Ppu (.*.d-ondk-W) Zp ZmiCkebap@hun* (ItC,rodPondweed) Ngu Nowuudkww@ (liCuthemnaucl A vw Few surm N V@J- pp. (-Wid) Ngr Nojw,,"dhma (ftied) US.GS. Ec C Ck-p. (.-kg-) Va Vfiumd, @m@ (wild celery) SCALE0124.000 00 DIE;-) 174 SUBMERGED AQUATIC VEGETATION 1986* 0 q x c,Ngr EC r. C No &W*d ected.on aerial photogra hy. p SPECIES SURVEY STATIONS ZM Zoifew marine (selgrass) HV Hydrilla -tkillai, (hydrill.) MD-DNR Sunrey Station BRISTOL, MD R. RWpl@ @,@ (widgeon g,.a.) Hd H11-1h- dbi. (-.r tmra..) N MS MYHoPAYU@ xpkaf@ (Eumian watermilloil) Pcr P-og-, Mpw (curly pordweed) IVID Charter Boat Field Sumey 159 Plot P-91- (radh.ad-g-) Cd C-wphylfrn d,.,,,- (.oo.j. ) Citizens Field Observation @@waad) PPC Po(enagelon pectinaw (58go P=Wdeed) PI)u Pota-gel-pusillw (51oriderpo DATE FLOWN 9113186 Zp Zamkhefia paljfis (homed pondweed) NgU Najas guafp-is (southem naiad) A VIKAS Field Su"y N Nale-pp. (.led) Ngr Najw pacellima (naiad) EC Efd- ce-*-. (- loil..) C Ch.rrp. (-.kg-) U.S.G.S. Va VaMswda mencana (vvild celery) SCALE 1:24,000 o 175 SUBMERGED AQUATIC VEGETATION 1986 Jk [TART 4111111111111tVAIM Mt Car on" 194 pool Haber de lit, enture it" Thom s Ston %t 11 P, Rose Hill 'J% 16 All, P, t ..... . Port Tobacco w-;.rt em 170 -.4, 72 41 54 4 EIA4 CA2 DA2 'rive?M jK Pit N" EA21 FA4 SPECIES SURVEY STATIONS PORT TOBACCO, MD Zm Z--n -mn (,,elgr-) Hv H)dfilla -ticilia'a 4hyd,ilta) MO-DNR Survey Station Rm RWpi. (.idgew gr-) Hd No ... @,hew d-bi, (.atr starg-) MD Charter Boat Field Survey Southeast Quarter Ms V-,ph, It.. pw- (Eurasian aterriniffoil) P,,, F.-q-n -- (-1, @.,-e pot P---- -fob-, ftedherid-grala) Cd C-wph,11- d-,- (_ntrifl) Citizens Field Observation p- -i-. (.w [email protected]) Ppu P,-,g,- pufll- (wender wnd@e@) 161 Zp p.lrifis (horned pond-ect Ngu vaids (sainhern -iad) A VIMS Field Survey N Nj. @p,@ (n-d) Ngr X.)..r -dfi.. (naiad) U.S.G.S. DATE FLOWN 10116186 EC Eln*@ -.d-i, (common C Ch- @p. (-kgre.) Va 11,11i ... j. --i... (wild cele,y) SCALE 1:12,001) 176 UNITED STATES TINGLES ISLAND QUADRANGLE Ei'AR' NTE M RYI@ND-WORCESTEJR W. MENT OF THE I RIOR 7.5 MINUTE SERIES ITO@RAPHIC) OLOGICAL SURVEY SUBMERGED AO.UATIC VEGETATION 1986 Rm A JA2 @A3 RZ "3 + FA4 04 -k CA3 7 'A Zm 4 DATEFLOWN 7P"M 411 SPECIES SURVEY STAnMS Zm art- (-Iw-) HY Hydr(Ma nnnIcillow (hydrifla) IVID-DW Survey Steffim TINGLES ISLAND, MD. Rm Rwpia aMalIbna (.5do.- Gre-) Hd Heteramhera dabh, (unflor slargrass) MD Charier Boat Field Survey Me MY40PAYfimn, JpkatMa (Eurasian vaitaffrAW) P., P-,,.. (.urty pnd1MnIadI) Pof Pora-sef@@rfofiarur (rodhead-graduil Cd Cenuophyum dc- (coontag) Citizens Field Observation TINGLES ISLAND, MD. PPC p-ka- (sSW P-M.W) Ppu P-ogeton pwWw Islander pondweed) .3. 170"'5 Zp Zavakkena= (Nmwd pmdwmd) Ngu Nwm gwdalwwu (southem naiad) A VIMS Field Survey N Nqf- pp. (-Id) r4gr Aadw g-Mbna (miad) U.S.G.S. Ec Eladea camadealu obdea) C Ch-p. (-Ekg-) Va YaWneria dinerkamm (wild I;eleq) SCALE 124PW 0 m." 017(1 U m 0 --ru, 177 UNITED STATES BOXIRON QUADRANGLE DEPARTMENT OF THE INTERIOR MARYLAND VIRGINIA 1=1@1'11 SURVEY SUBMERGED ACIUATI GETATION 1986 7.5 MINUTE SERIES (TOPOGRAPHIC) -Z. MAY + a100,11,811, cows 14 JORMSON &AT FA A-S. 0- D r) D - I . PA.18 A 2 .T G c@ R PURNBLL 71 0 A N D DAY C, zm AL N A 1 0 L IT A 14:: "' C IV X'* DATE FI_6;@ 7/30/% ................ SPECIES SURVEY STAMNS Z. 7.,- (selgrius.) HV Hydiff--twiff- (hycrilla) MD-DNRSumy Station BOXIRON, MD.-VA. RM Ruppia manirmo (widgeon graas) Hd Her-them dbia (mmr stargraw) MD Charter aoat Field Survey Me Mydophyu_ spicaran (Eurawan watemildoill) Pcr P,,,-,,- rri,,- (-Py pon&.-d) Ppf P-op-PlIfIfia- (redhead-grarss) Cd Ccraiophyfl@ demr- (coontail) Citizens Field Observation BOXIRON. MD.-VA. PpC F@I-ej- p-e- (.W pordweed] Ppu Paramogenon pmsjU@ (slerdler pondweed) 172 Zp Z-kkeha pZ'jtfij (horned pOrKhvIed) Ngu Ngim @dol@ws, (soUthern naiad) A VIMS Field Survey N Nj.,Pp. (.id) Ngr JVqjw jp-illim, (naiad@ U.S.GS. Ec Elodea cAned-m (GoRvnOn elodea) C Ch@ V. (mskgNosa) Va Vollismmo (wild celary) SCALE.124AM 00 11 MID- "i OWN. 178 UNITED STATES WHl7nNOTON POINT QUADRANGLE DEPARTMENT OF THE INTERIOR MAR LAND-VIRGIRIA GEOUDOICAL SURVEY 7.5 MINUTE SERIES (ropco"77, SUBMERGED AQUATIC VEGETATION 1986 1K OR fassm ar; &AT sAr Re OR DATE FLOWN 7=86 - -6 1161' SMCIES SURVEY STATIONS Zm Z.,N. -fee (001on.) HV Hy&i& -*111lao (hydrela) MD-DW Survey Station WHITTINGTON Rm Rwpla madame (wWolson arm) Hd H-ft-M- deble (Water staronsee) Me Myrjapkyttm eRkatum (Eumsian wderneffoll) Per Porjr- crirpw (curt, ponOWeed) MID Charter Boat Fleld3urvey POINT, MD.-VA. Pof (red1wed-grams) Cd Cemophyffurn At- (coonta") Citizens FisAd Observation WHITTINGTON POINT, MD.-VA. Pipe Pt_#.ARrj-@- ow-p-t-W) Ppu P-Seto, pmMu (Wer4er pont-ed) "173 ZP Z-.khka paleari, (t...d P-M-d) Ngu Nqiw ewdakwwa (mouthem melsf) A V114S Field Survey N Nojw ipp. (nalad) Ngr Najw g,,,raUma (mied) US.G.S. Ec El@a cama&wis (coev,,on elodsa) C CA-P. (-korzes) Va Vffillmrja -L-ema (Wild celery) SCALE@24jboo 0 1-.. 179 N UNITED STATES 1140 CHINCOT AGUE EAST OUADRANOLE DEPARTAIENT OF THE INTERIOR MVIROINIA-AC -COMACK CO. GEOLOGICAL SURVEY SUBMERGED A(IUATIC VEGETATION 1986 TS INUTE SERIES (TOPOGRAPHIC) Z2 ARM ZM A3 C5 10 ell J. + 5 0, W _2 CD C, TONS COVE CHINCOTEAGUE EAST, VA. 175 J# SPECIES SURVEY STATKM Zm Z-- Ig-) Hv HydrW4 mrdeii'ala (hydrilla) MD-" Sumy Station Rm R-Ppi. (..Jg- gr-) Hd 11-thu,,a dbla (water sterWase) MD Charter Boat Field Sumey MS MyrfophyUm iptcoop, (Eurasiar, watermittal) Pcr Pota-grion criv@ (curly pondweed) PDf Pohewploaperfolfatw (redheatt-grus) Cd C-phyll- d--r,- (-tafl) Citizene Field Observation Ppc P,t-,- "o-tw (sago porxiweed) Ppu Por-o"'.. P.,W. (.Wder Prdwed) P6 Nqw mda[Wemis (southem miad) A VIMS Field Surtrey ZP ZM%kk9LW palwfrii (homed pondweed) Ngu N Nqjw spp. (muef) Ngr JVojaj,,-,zLlu- (mad) U.S.GS. EC Slodea ca-dewil (oooe,mn ekXWa) C Ch@ ip. (Muskgrass) Va Valll-ia -ko- Wit celary) SCALE 124j(100 c OC70GID W 0 180 111011111011 3 6668 00000 8716