Distribution of Submerged Aquatic Vegetation in the Chesapeake Bay and Tributaries and Chincoteague Bay
QH 541.5 Virginia Institute of Marine Science .~8 School of Marine Science 11.:. E-,.:-nr-c-tll Prntecfion figency 083 College of William and Mary F:<;Y~ r r fntrrnai\on Rts$urce 1987 <;-::r I 2~~521 $1; CLn~'lu'SfrCcf 1987 Phli~I~Ip~bi,'1 13107 Distribution of Submerged Aquatic Vegetation in the Chesapeake Bay and Tributaries and Chincoteague Bay - 1987
Robert J. Orth, Adam A. Fri sch, Judith F. Nowak, and Kenneth A. Moore Virginia Institute of Marine Science School of Marine Science College of Will iam and Mary Gloucester Point, VA 23062
Contributions by: Nancy Rybicki U.S. Environmental Protection Agenq R.T. Anderson Region 111 Information Resource Virginia Carter Center (3PM52) U. S . Geol ogi cal Survey 841 Che~inutStreet Reston, VA 22092 Philadelphia, PA 19107
Funded by: Mary1 and Department of Natural Resources Virginia Institute of Marine Science U.S. Fish and Wildlife Service U.S. Environmental Protection Agency All ied-Signal Inc. National Oceanographic Atmospheric Administration
Final Report Submitted to: U.S. Environmental Protection Agency Chesapeake Bay Program Annapolis, MD 21403 April, 1989
Cover Photo: Aerial photograph of the Potomac River south of Washington D.C., shot at 12,000 feet by AEROECO Inc., Edgewater, MD. CONTENTS Paqe Tables ...... iv Figures ...... Executive Summary ...... Acknowledgements ...... 1. Introduction ...... 2 . SAV Species ...... 3 . Methods ...... Introduction ...... Aerial photography ...... Mapping process ...... SAV perimeter digitization and area calculation ...... Tests of precision and accuracy ...... Calculation of SAV bed mean area ...... Standard operating procedures ...... Conversion of SAV Perimeter Points to Latitude & Longitude .. Organizational provinces for analysis ...... Ground truth and other data bases ...... Data presentation ...... 4 . Results ...... Susquehanna Flats (Section 1) ...... Upper Eastern Shore (Section 2) ...... Upper Western Shore (Section 3) ...... Chester River (Section 4) ...... Central Western Shore (Section 5) ...... Eastern Bay (Section 6) ...... Choptank River (Section 7) ...... Patuxent River (Section 8) ...... Middle Western Shore (Section 9) ...... Lower Potomac River (Section 10) ...... Upper Potomac River (Section 11) ...... Middle Eastern Shore (Section 12) ...... Mid-Bay Island Complex (Section 13) ...... Lower Eastern Shore (Section 14) ...... Reedville (Section 15) ...... Rappahannock River Complex (Section 16) ...... New Point Comfort Region (Section 17) ...... Mobjack Bay Complex (Section 18) ...... York River (Section 19) ...... Lower Western Shore (Section 20) ...... James River (Section 21) ...... Chincoteague Bay ...... CONTENTS (CONTINUED)
5 . Historical Trends ...... 88 York River ...... #...... 90 Rappahannock River ...... 95 Eastern Shore ...... 100 6 . Literature Cited...... 105 7 . Appendices ...... 108 A . Species of submerged aquatic plants found in the Chesapeake Bay and tributaries ...... 109 B. Latitude and longitutle coordinate points defining the 21 major sections of the Chesapeake Bay SAV study area and Chincoteague Bay ...... 110 C . Topographic quadrangles showing distribution. abundance. and ground truthing of SAV in 1987 ...... 114 D. SAV bed areas for each topographic quadrangle in 1987 ..... 219 TABLES Number Paqe 1 Guide1 ines for acquisition of aerial photographs ...... 7 2 List of topographic quadrangles in Chesapeake Bay and Chincoteague Bay SAV study areas and corresponding code numbers ...... 11 Area description for 21 major sections in the Chesapeake Bay SAV study area...... 23 Total area of SAV by quadrangles for 1987 ...... 3 1 Number of hectares of SAV for each of the major sections in the bay for 1987 ...... 3 8 Number of square meters of SAV in each quadrangle of the 21 major sections for 1987 ...... 39 FIGURES Number Paqe 1. Map of Chesapeake Bay and tributaries with locations of all SAV beds in 1987 ...... VIII 2 Approximate location of flight lines where SAV photo- graphy was acquired in 1987 ...... 6 3 Location of topographic quadrangles in the Chesapeake Bay and tributaries and Chincoteague Bay for determining distribution of SAV ...... 10 4 Crown density scale used for determining density of SAV beds: very sparse (I), 0-10%; sparse (2), 10-40%; moderate (3), 40-70%; dense (4), 70-100%...... , . . . , ...... 14 5 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 and Appendix B for exact boundaries) ...... 22 6 Location of USGS vegetation sampling transects in the tidal Potomac River above Mattawoman Creek ...... 27 7 Location of USGS vegetation sampling transects from Mattawoman Creek to Port Tobacco River ...... 2 8 8 Distribution of SAV in Susquehanna Flats section ...... 49 9 Distribution of SAV in Upper Eastern Shore section ...... 51 10 Distribution of SAV in Upper Western Shore section ...... 53 11 Distribution of SAV in Chester River section ...... 55 12 Distribution of SAV in Central Western Shore section...... 56 13 Distribution of SAV in Eastern Bay section ...... 58 14 Distribution of SAV in Choptank River section ...... 60 15 Distribution of SAV in Patuxent River section ...... 62 16 Distribution of SAV in Middle Western Shore section ...... 63 17 Distribution of SAV in Lower Potomac River section ...... 65 18 Distribution of SAV in Upper Potomac River section ...... 67 19 Percent cover of Hvdrilla in vegetated areas in the tidal Potomac River in 1987 ...... 68 Fl GURES (continued) Number Paqe 20 Percent cover of submersed aquatic vegetation in the tidal Potomac River in 1987 ...... Distribution of SAV in Middle Eastern Shore section ...... Distribution of SAV in Mid-Bay Island Complex section ...... Distribution of SAV in Lower Eastern Shore section ...... Distribution of SAV in Reedville section ...... Distribution of SAV in Rappahannock River Complex section ... Distribution of SAV in New Point Comfort section ...... Distribution of SAV in Mobjack Bay Complex section ...... Distribution of SAV in York River section ...... Distribution of SAV in Lower Western Shore section ...... Distribution of SAV in James River section ...... Distribution of SAV in Chincoteague Bay ...... Location of 3 areas used in historical trends analysis ...... SAV changes in the Ycrk River, 1971-1987 ...... SAV in the York Riverb. 1971...... SAV in the York Riverb. 1978 ...... SAV in the York River. 1987 ...... SAV changes in the Ra.ppahannock River. 1971.1987 ...... SAV in the Rappahannc~ck River. 1971 ...... SAV in the Rappahannc~ck River. 1974 ...... SAV in the Rappahannc'ck River. 1987 ...... SAV changes along the lower Eastern Shore. 1978.1987 ...... SAV along the lower Eastern Shore. 1978 ...... SAV along the lower Eastern Shore. 1980 ...... SAV along the lower Eastern Shore. 1987 ...... v I EXECUTIVE SUMMARY
The distribution of submerged aquatic vegetation during 1987 in the Chesapeake Bay, its tributaries, and Chincoteague Bay, was mapped at a scale of 1:24,000 using color aerial photography. SAV bed perimeter information was digitized and stored in a computerized data base. Ground truth information was obtained from the U. S. Geological Survey, the Mary1and Department of Natural Resources, the University of Maryland Horn Point Laboratory, Harford Community College and the Virginia Institute of Marine Science. Citizen support via the U. S. Fish and Wild1 ife Service and Chesapeake Bay Foundation, as well as the Maryland Charterboat Association via the Maryland DNR Watermen's Assistance Program, provided additional ground truth information. In 1987, the Chesapeake Bay had 20,119 hectares of SAV, with 2,954 , 9,202 and 7,963 hectares occurring in the Upper, Middle and Lower Bay zones, respectively (Fig. 1). Seventy-five percent of the SAV in the Upper Bay zone was located in the Susquehanna Flats section. Nine species of SAV were documented by ground truth surveys in this section, with Mvriophvll um spicatum being the dominant species. Hvdrilla verticillata was found in the Flats but occurred in small isolated beds, as did all SAV in this area. In the Upper Western Shore section SAV was concentrated in the Bush, Gunpowder, and Middle Rivers, in particular Saltpeter and Seneca Creeks, with M. spicatum and Vallisneria americana being most abundant. In the Chester River section, SAV was most abundant adjacent to Eastern Neck and Eastern Neck Island and in Langford Creek. In this region Rup~iamaritima was the most abundant of six species which were reported. Figure 1. Map of Chesapeake Bay and tributaries with locations of all SAV beds in 1987.
viii In the Middle Bay Zone SAV was abundant in: the Eastern Bay; the 1ower Honga River area including Barren Island; Big and Little Annemessex Rivers; the lower sections of the Manokin River; Bloodsworth, Southmarsh, Smith and Tangier Islands, and the broad shoal area between Smith and Tangier Islands. This Middle Bay zone was redrawn from earl ier surveys and now includes additional areas of SAV formerly designated to the Lower Bay zone. R. maritima was the dominant species reported for this mid-bay area, with Z. marina being abundant in the Smi th-Tangier Is1and area. The Middle Bay zone also includes the entire Potomac River. SAV was concentrated in two distinct zones: the tidal freshwater region where H. verticillata was the numerically dominant species, and in the region around the Rt. 301 bridge, including the Nanjemoy and Port Tobacco Creeks. y. americana and y. s~icatumwere dominant species in this area. The total SAV in the Hvdrilla dominated areas has not increased appreciably during the last 2 years, a1 though Hvdrilla has been reported further downriver. SAV was abundant throughout the entire Lower Bay zone except for the James River. Fifty-one percent of SAV in the Lower Bay zone was found in the Lower Eastern Shore section, around the Fox Islands and the mouths of major creeks (i.e Cherrystone Inlet, Hungars Creek, Mattawoman Creek, Occahannock Creek, Craddock Creek, Pungoteague Creek and Onancock Creek). Along the western shore, SAV was abundant in Mobjack Bay (15% of SAV in the Lower Bay zone), 1ower York River, Back River and Drum Is1and Fl ats area adjacent to Plum Tree Island. Both R. maritima and 7. marina were abundant throughout this zone. 8. maritima had rapidly spread in both the Piankatank and Rappahannock Rivers in the 1ast year, occurring in sparse to dense beds in many previously unvegetated areas, especially in the Corrotoman River. SAV in Chincoteague Bay was little changed in distribution from 1986. All of the SAV consisted of R. inaritima and I. marina and was located along the eastern side of the bay behind Assateague Island. SAV distribution since the 1970's was examined for three locations in the Chesapeake Bay which represent different scenarios of change that SAV has undergone: 1. The York River (1971-1987) where SAV declined in upstream sites in the early 1970's but has been slowly returning over the last five years; 2. The Rappahannock River (1971-1987) where SAV almost completely disappeared in the early 1970's and has just recently been returning to a few sections, and 3. The lower Eastern Shore (1978-1987) where SAV had only slightly declined in the 1970's, Continued monitoring of the changes in SAV populations at these sites as wctll as others, coupled with detailed water qua1 ity measurements and 1aboratory experimentation, should 1ead to a much greater understanding of those factors that control the distribution and abundance of SAV in the Chesapeake Bay. ACKNOWLEDGEMENTS
We would 1i ke to gratefully acknowledge all federal and state agencies who financially supported this project: the Maryland Department of Natural Resources (Md.DNR); the Virginia Institute of Marine Science (VIMS); the U.S. Fish and Wildlife Service (F&WS); the U.S. Environmental Protection
Agency (USEPA) ; and the National Oceanographic and Atmospheric Administration (NOAA). Also, we thank Allied - Signal, Inc. for generously providing funding for this work. Acknowledgement would not be complete without commendation for the groups which provided ground truthing of SAV beds which was used in conjunction with interpretation of the 1987 photography. F&WS and the Chesapeake Bay Foundation (CBF) organized citizens to report locations and species composition of grassbeds around the Bay. In addition, members of the Maryland Charterboat Association were funded by the Md.DNR to participate in the ground truthing program and contributed valuable information on location and species composition of SAV beds in Maryland waters. J. Court Stevenson and Lori Staver of the University of Maryland, Horn Point Environmental Laboratory (HPEL), and Stan Kollar of Harford Community College (HCC) provided ground truth information for certain specific regions of the Maryland portion of the Bay. Nancy Rybicki, R.T. Anderson and Virginia Carter of the U.S. Geological Survey (USGS) provided ground truth information from three 1987 surveys conducted on portions of the Potomac River and a1 so contributed figures to this report from their open-file report (Rybicki, et. a1 . , 1988). VIMS personnel who assisted in ground truthing Virginia waters of the Bay are Curtis Harper, Angela Barbieri, Jim Perry, Carol Curtis, George Pongonis, and Steve George. The production of this report required the dedication of numerous scientists, technicians, artists, photographers, and others. The following people deserve a note of thanks: Bert Brun and Linda Hurley, U.S. F&WS; Frank Dawson, Md.DNR; Rich Batiuk and Rickie Price, USEPA-Chesapeake Bay Program (CBP); Margaret Podlicli (CBF). We are especially grateful to the dedicated VIMS personnel who contributed greatly to the production of this report: Jan Hodges, Tim Smithwick, Michelle Feeley, Jennifer Whiting, and Chris Peery for assistance in data collection and compilation; Mary Jo Shackel ford, Harold Burrell, Kay Stubblefield, Diane Bowers, Silvia Motley, and Billy Jenkins for graphic art work on the SAV maps reproduced in Appendix C, and for figure pre,paration, photography and printing; Ruth Hershner, Val i se Jackson, and Janet Wal ker for word processing; Pat Hall and David Boughan for computer ser'vices; and Cathy Hodock, Marion King, and Ned Hedrick of the purchasing department. Leigh Medford, Photographic Services, Virginia Department of Transportation; Claud Summers, U.S. Geological Survey (USGS), National Cartographic Information Center (NCIC), Mid-Continent Mapping Center; and Craig Breen, Engineering Media Inc., were helpful in the procurement of high quality top0 maps and map copies. Robert Macomber (AEROECO) conducted the aerial photographic missions and was responsible for the high quality photographs. Technical reviewers of the 1987 report were Linda Hurley (F&WS), Frank Dawson (MdDNR) , Robert Bl ama (Corps of Engineers, Baltimore District), Rich Bati uk (USEPA-CBP), Debbie Jell ick (Metropol i tan Counci 1 of Governments), Jim Cummings (ICPRB) , Tim Goodyear (NOAA) , Catherine Harold (Virginia Council on the Environment), Stan Kollar (HCC), Court Stevenson and Lori Staver (HPEL), and Virginia Carter and Nancy Rybicki (USGS). SECTION 1 INTRODUCTION
A major goal of the Chesapeake Bay cleanup program is to insure that the 1iving resources of the bay remain viable and productive components of the bay ecosystem. Understanding the complexity of the Chesapeake Bay, in particular those factors that affect the distribution and abundance of the living resources, is critical if we are to develop effective management strategies to improve the quality of the Chesapeake Bay environment. Submerged aquatic vegetation (SAV) is one of the most important living resources of the Chesapeake Bay. Because of its sensitivity to small changes in environmental conditions, SAV can serve as a barometer of the health of the bay (Orth and Moore, 1988). A key component to understanding factors affecting spatial and temporal changes in distribution and abundance of SAV is documentation of annual changes in abundance of SAV beds over a 1ong period. The Chesapeake Bay Program includes a component which emphasizes the monitoring of living resources on a regular basis. Since SAV communities can respond quickly to changes in water quality, comprehensive monitoring of this resource can provide an integrated view of the status of eutrophication and relative health of the system throughout much of the bay region. SAV communities in the entire Chesapeake Bay and tributaries have been photographed, mapped and the areas of the beds digitized in 1978, 1984, 1985, 1986 and 1987 while portions of the upper bay were mapped and digitized in 1979 and the lower bay was mapped and digitized in 1980 and 1981 (Orth, et. a1 . , 1979; Anderson and Macomber, 1980; Orth, et. a1 . , 1985, 1986, 1987). Numerous SAV ground surveys have been conducted but most have been limited to specific sections. No one ground survey has delineated baywide SAV patterns. Aerial plnotography has proved to be a useful tool in examining SAV distribution pattterns and, when combined with appropriate ground data, has provided an accurate, synoptic picture of baywide SAV distribution. The goal of the 1987 work was to continue the annual monitoring of SAV on a baywide basis using aerial photographic methods with appropriate ground truth to substantiate presence or absence of SAV in parti cul ar sections. 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. Mvrio~hvllum spicatum (water milfoil), Potamoqeton Pectinatus (sago pondweed), Potamoqeton ~erfoliatus(redhead grass), Zannichellia ~alustris(horned pondweed), Vallisneria americana (wild celery), Elodea canadensis (common elodea), Cerato~hvllumdemersum (coontail) and Najas quadalu~ensis (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). Rumia 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 when present, occur primarily in the middle and upper reaches of the bay and the tidal rivers (Appendix
A). Hvdrilla verticillata (hydrilla), presently dominates SAV beds in the tidal freshwater reaches of the Potomac River and has also been reported from the Susquehanna Flats, where its growth has not been as widespread (Kollar, pers. comm.). SECTION 3 METHODS
Introduction
Color aerial photography at a scale of 1:24,000 was the principal source of information used to assess the distribution and abundance of SAV in the Chesapeake Bay, its triklutaries, and Chincoteague Bay in 1987. SAV beds mapped from photographs or~toUnited States Geological Survey (USGS) 7.5 minute topographic quadrangles were then digitized, providing a digital data base for analysis of bed area aind location. Ground truth information collected in 1987 was mapped ordo the same topographic quadrangles.
Aeri a1 Photography
The 1987 SAV photography was obtained by AEROECO (Edgewater, MD) using a Zeiss Jena LMK 15/2323 camera, a 153 mm (6 inch) focal length Zeiss Jena Lamegon PI/C lens, and Kodak 24 cm (9 1/2 inch) square negative Aerochrome MS type 2445 film. The camera was mounted in the bottom fuselage of AEROECO'S Partenavia P68 Observer, a twin engine high wing reconnaissance aircraft. Photography was acquired at approximately 12,000 feet altitude, yielding a 1 :24,000 photographic scale. Flight lines for photography were predetermined by AEROECO (and approved by the Principal Investigators) to include all areas known to have SAV, as well as those areas which could potentially have SAV (i.e., all areas where water depths were less than 2 m at mean low water), as well as land features necessary as control points for accurate mapping. Flight 1ines were drawn on 1:250,000 scale USGS maps (Fig. 2). Flight lines were prioritized by major sections and dates of flight windows for aerial photography were specified by the Principal Investigators by contract with AEROECO. Acquisition of photography was timed to occur at peak standing crop of species known to occur in the sections. In addition, specific areas with significant coverage were given priority. Prior documentation and approval by the funding agencies was required to extend dates of flight windows if necessary. Actual dates of acquisition of photography are noted on each quadrangle map in Appendix C. General guidelines for mission planning and execution (Table 1) address tidal stage, plant growth, sun el evation, water and atmospheric transparency, turbidity, wind, sensor operation, and plotting. Adherence to these guidelines assured acquisition of photography under nearly optimal conditions for detection of SAV, thus insuring accurate photo interpretation. Quality assurance and calibration procedures are as follows. The altimeter was calibrated by the Federal Aviation Administration annually. Photographic settings were selected with an automatic exposure control. Sun angle was measured with an indicator on the plane. Flight 1ines were plotted on 1:250,000 scale maps to allow for overlap of photography. To minimize image degradation due to sun glint, the camera was equipped with a computer controlled intervalometer which established 60% line overlap and 20% sidelap. An automatic bubble level held the camera to within one degree Figure 2. Map of Chesapeake Bay and tributaries with approximate locations of flight lines for 1987 photography.
6 TABLE 1. GUIDELINES FOLLOWED DURING ACQUISITION OF AERIAL PHOTOGRAPHS.
Tidal Stage - Photography was acquired at low tide, +/- 0-1.5 ft., as predicted by the National Ocean Survey tables. Plant Growth - Imagery was acquired when growth stages ensured maximum delineation of SAV, and when phenologic stage overlap was greatest.
Sun Angle - Photography was acquired when surface reflection from sun glint did not cover Bore thag 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. Turbidity - Photography was acquired when clarity of water ensured complete delineation of grass beds. This was visually deprmined from the airplane to insure that SAV could be seen by the observer. 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. 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. Sensor Operation - Photography was acquired in the vertical mode with less than 5 degrees ti1t. Scale/al titude/film/focal length combination permitted resolution and identification of one square meter area of SAV (surface). Plotting - Each flight line included sufficient identifiable land area to assure accurate plotting of grass beds. ti1t. The scale/al titude/film/focal length combination was coordinated to produce two foot resolution. Wind speed was monitored hourly from the flight service avail able in the region. Under normal operating conditions, flights were usually conducted under wind speeds less than 10 mph. (Above this, wind generated waves stir the bottom sediments which can easily obscure SAV beds in less than one hour.) Pilot experience determined what acceptable level of turbidity would insure complete del ineation of SAV beds. (Robert Macomber of AEROCOo, personally responsible for acquisition of the photography, has had 10 years experience in aerial photography of SAV and is knowledgeable of the Chesapeake Bay and tributaries.) At low tide the pilot should have been able to distinguish bottom features such as SAV or algae.
When turbid conditions prevailed photography did not commence. Cloud cover did not exceed 5% of the area covered by the camera frame. Determination of cloud cover was based on pilot experience. Records of this parameter were kept in a flight notebook. Every attempt was made to acquire photographs with no cloud cover below 12,000 feet. A thin haze layer above 12,000 feet was general ly acceptable. Experience has shown that the optimal conditions given above generally occur twcl to three days following passage of a cold front when winds have shifted from north-northwest to south and moderated to less than 10 mph. Where possitlle, and within the guidelines given for proiritizing and executing the photography, flights were planned to coincide with these atmospheric conditions. Exposed film was processed by AEROECO. A contact print was produced for each exposed frame. Each photograph was labeled with date and time of acquisition as well as location. Film and photographs were stored under appropriate environmental conditions to prevent degradation of the product. Mapping Process
This study util ized USGS 7.5 minute topographic quadrangle maps as a basis for mapping SAV beds from aerial photography, for digitizing the SAV beds, and for compiling SAV bed area measurements. Figure 3 gives locations of topographic quadrangles in the study area which includes all regions with potential for SAV growth. Most quadrangles are sequentially numbered for efficient access to data. The name corresponding to each quadrangle in Figure 3 is 1isted in Table 2. Photo interpretation to identify and delineate SAV beds utilized all available information including knowledge of aquatic grass signatures on film, distribution of SAV in 1986 from aerial photography, 1987 ground truth information, and aerial site surveys. USGS published 7.5 minute topographic quadrangle masters (1:24,000 scale) printed by the Mid-continent Mapping Center of the USGS on stable transparent mylar were used as base maps. Identical copies of these base maps were made at the same scale on stable transparent mylar by the Virginia Department of Highways using a diazo process. SAV from the 1987 aerial photographs was mapped onto these diazo copies of USGS topographic quadrangles. Delineation of SAV bed boundaries onto the topgraphic quadrangle maps was facilitated by superimposing the photographic print with the appropriate mylar quadrangle on a light table. SAV boundaries were then traced directly onto the my1 ar quadrangle with a pencil. Where minor scale differences were evident between a photograph and a quadrangle, or where significant shore1 ine erosion or accretion had occurred since USGS publication of a map, either a best fit was obtained or shoreline changes were noted on the quadrangle. Figure 3. Location of USGS topographic quadrangles in the Chesapeake Bay, its tributaries and Chincoteague Bay. TABLE 2. LIST OF USGS 7.5 MINUTE QUADRANGLES IN CHESAPEAKE BAY AND CHINCOTEAGUE BAY SAV STUDY AREAS AND CORRESPONDING CODE NUMBERS (SEE FIG. 3 FOR LOCATION OF QUADRANGLES. THOSE TOPOGRAPHIC QUADRANGLES WITH SAV BEDS CAN BE FOUND IN APPENDIX C).
- Conowingo Dam, Md.-Pa. 46. Preston, Md. Aberdeen, Md. 47. Quantico, Va. -Md. Havre de Grace, Md. 48. Indian Head, Va.-Md. North East, Md. 49. Benedict, Md. El kton, Md. 50. Prince Frederick, Md. White Marsh, Md. 51. Hudson, Md. Edgewood, Md. 52. Church Creek, Md. Perryman, Md . 53. Cambridge, Md. Spesutie, Md. 54. East New Market, Md. Earleville, Md. 55. Widewater, Va.-Md. Cecilton, Md. 56. Nanj emoy , Md . Baltimore East, Md. 57. Mathias Point, Md.-Va. Middle River, Md. 58. Popes Creek, Md. Gunpowder Neck, Md. 59. Mechanicsville, Md. Hanesville, Md. 60. Broomes Island, Md. Betterton, Md. 61. Cove Point, Md. Galena, Md. 62. Taylors Island, Md. Curtis Bay, Md. 63. Golden Hi11, Md. Sparrows Point, Md. 64. Passapatanzy, Md.-Va. Swan Point, Md. 65. King George, Va.-Md. Rock Hall, Md. 66. Dahl gren, Va. -Md. Chestertown, Md. 67. Coloni a1 Beach North, Md. -Va. Round Bay, Md. 68. Rock Point, Md. Gibson Island, Md. 69. Leonardtown, Md. Love Point, Md. 70. Hol 1ywood , Md . Langford Creek, Md. 71. Sol omons Isl and, Md . Centreville, Md. 72. Barren Island, Md. Washington West, Md.-D.C.-Va. 73. Honga, Md. Washington East, D.C.-Md. 74. Wingate, Md. South River, Md. 75. Nanticoke, Md. Annapol is, Md. 76. Col oni a1 Beach South, Va. -Md. Kent Island, Md. 77. Stratford Hall, Va.-Md. Queenstown, Md. 78. St. Clements Island, Va.-Md. A1 exandri a, Va. -D. C. -Md. 79. Piney Point, Md. -Va. Deale, Md. 80. St. Marys City, Md. Clai borne, Md. 81. Point No Point, Md. St. Michaels, Md. 82. Rich1 and Point, Md. Easton, Md. 83. Bl oodsworth Is1and, Md. Fort Belvoir, Va. -Md. 84. Deal Island, Md. Mt. Vernon, Md.-Va. 85. Monie, Md. Lower Marl boro, Md. 86. Champlain, Va. North Beach, Md. 87. Machodoc, Va. Tilghman, Md. 88. Kinsale, Va.-Md. Oxford, Md. 89. St. George Island, Va.-Md. Trappe, Md. 90. Point Lookout, Md. TABLE 2. (continued)
Kedges Straits, Md. Cheri ton, Va. Terrapin Sand Point, Md. Savedge, Va. Marion, Md. Claremont , Va. Mount Landing, Va. Surry, Va. Tappahannock, Va. Hog Is1and, Va. Lottsburg, Va. Yorktown, Va. Heathsvi 11e, Va. -Md. Poquoson West, Va. Burgess, Va.-Md. Poquoson East, Va. Ewell, Md.-Va. Elliotts Creek, Va. Great Fox Island, Va.-Md. Townsend, Va. Crisfield, Md.-Va. Bacons Castle, Va. Saxis, Va.-Md. Mu1 berry Isl and, Va. Dunnsville, Va. Newport News North, Va. Morattico, Va. Hampton, Va. Lively, Va. Benns Church, Va. Reedville, Va. Newport News South, Va. Tangier Island, Va. Norfolk North, Va. Chesconessex, Va. Little Creek, Va. Parks1ey, Va. Cape Henry, Va. Urbanna, Va. Chuckatuck, Va. Irvington, Va. Bowers Hill, Va. Fleets Bay, Va. Norfolk South, Va. Nandua Creek Kempsvi 11e, Va. Pungoteague, Va. Princess Anne, Va. West Point, Va. Wye Mills, Md. Sal uda, Va. Bristol, Md. Wilton, Va. Fowl ing Creek, Md. Deltaville, Va. Port Tobacco, Md. Jamesville, Va. Charlotte Hall, Md. Toano, Va. Mardel a Springs, Md. Gressitt, Va. Wetipquin, Md. Ware Neck, Va. Sel byville, Md. Mathews, Va. Assawoman Bay, Md. Franktown, Va. Berl in, Md Westover, Va. Ocean City, Md. Charles City, Va. Public Landing, Md. Brandon, Va. Tingles Island, Md. Norge, Va. Girdle Tree, Md.-Va. Williamsburg, Va. Boxi ron, Md. -Va. Clay Bank, Va. Whittington Point, Md.-Va. Achilles, Va. Chincoteague West, Va. New Point Comfort, Va. Chincoteague East, Va. Cape Charles, Va. Anacostia, D.C.-Md. In addition to delineating SAV bed boundaries, 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. 4). Bed density was classified into one of four categories based on a subjective comparison with the density scale. These were: 1, very sparse ( SAV Perimeter Digitization and Area Calculation The perimeters of all SAV beds mapped from the aerial photography were digitized in a clockwise direction using a Numonics Model 2400/2200 DigiTablet Graphics Analysis System having a resolution of .001 inches (.00254 cm) and an accuracy of .005 inches (.0127 cm). Coordinates were transmitted to a PRIME 9955 computer for area calculations and data manipulation via software developed at VIMS. Each SAV bed was digitized at least four times and the area reported as a mean of three. -- PERCENT CROWN COVER Figure 4. Crown density scale used for determining density of SAV beds: (1) Very sparse, 0-10%; (2) Sparse, 10-40%; (3) Moderate, 40-70%; (4) Dense, 70-100%. The perimeter of each SAV bed was defined by a polygon with a 1 inear data point density of 127 per chart inch (50 per cm, 5 meter ground resolution). The total number of points defining any SAV bed is dependent on overall bed size. The SAV bed perimeter was stored as X and Y coordinates in centimeters from the quadrangle origin (lower left corner). Any 'island' within a polygon (digitized SAV perimeter) was disregarded as long as a 1 ine was drawn from the outside of the polygon to the 'island' and the resulting polygon was digitized in a clockwise direction. The line connecting the 'island' polygon to the larger surrounding polygon was drawn in by the digitizer operator. SAV bed area in square centimeters on the chart was calculated via the fol 1 owing equation : where Xn and Yn are the nth digitized perimeter points in centimeters. The area is then converted from square centimeters on the chart to square meters on the ground. This is done via the following conversion based on a chart scale of 1 :24000: 2 2 2 2 A (m on ground) = Ac(cm on chart) 57600 (m on ground cm on chart) 9 * / where A is the area on the ground of each SAV bed and A, is the area on the g chart. The area on the ground is then stored for later use. Tests of Precision and Accuracy Prior to each digitization session, the Numonics instrument was checked manually against a digitizing standard. After a map had been secured to the digitizing tablet, the standard was secured to the map and digitized four times. The information from digitizing the standard was transmitted to the beginning of the SAV bed Perimeter File on the PRIME computer. This same procedure was followed at the end of each digitizing session. When this file was processed by the computer, the digitized area of each standard was compared to the known area of the standard. If a variation between the known and the mean of the observed areas exceeded 1.0% a warning was printed advising the operator to check the digitizing system. In addition, checks were made with respect to the absolute location of the digitizing standard as secured to the map. A comparison was made between the 1ocati on of the standard before and after the digitizing session. If the absolute location differed by more then 0.10 cm another warning to check the system was printed. Any movement in absolute location can be indicative of digitizer instrument drift or chart movement during the digitization session. These checks assure that the final calculated bed locations are as accurate as possi ble. Maximum accuracy was maintained by exclusively using mylar topographic quadrangles rather than paper ones which can change scale as a function of changes in air temperature and humidity in the digitizer room . Calculation of SAV Bed Mean Area and Choice of Representative SAV Bed Every SAV bed mean area was the result of at least four independent digitizations of the outline of each SAV bed. The computer made an area calculation of each replication and the 3 bed outlines or perimeters most similar in terms of area were then used for the calculation of a mean area. The perimeter defining the area most similar to the mean area was then saved by the computer as the representative perimeter for this specific SAV bed. Representative perimeters for all 1987 SAV beds were later converted to Latitude and Longitude and a copy of each on computer tape was then sent to the EPA Chesapeake Bay Program. The areas used in the mean area calculation do not by contract requirements have a range in excess of 5% of the mean area. All bed areas having an error rate in excess of 5% are flagged by the VIMS quality assurance quality control computer program for additional error assesment. In fact, the VIMS error rate is normally less than 1%. A complete outline of the digitization procedure can be found in the quality assurance project plan for the 1987 submerged aquatic vegetation, distribution and abundance survey of the Chesapeake and Chincoteague Bays (available from the EPA Chesapeake Bay Program Office). Standard Operating Procedures for Qua1i ty Assurance/Qual ity Control Standard operating procedures (SOPs) were developed to faci1 itate orderly and efficient processing of the 1987 SAV maps and the SAV bed perimeter computer files produced from them, and to comply with the need for consistency, quality assurance and quality control. SOPs developed include: a detailed procedure out1 ining 46 steps for digitization of SAV maps; a 47 step checklist for editing SAV perimeter computer files to insure completeness and accuracy; a digitizer log in which all operations were recorded and dated, and which was used to guide and record editing operations; and a flow chart used to track progress of all operations including all changes in file names. Examples of these SOPS are in the quality assurance project plan for the 1987 submerged aquatic vegetation, distribution and abundance survey of the Chesapeake and Chincoteague Bays. Conversion of SAV Perimeter Points from X,Y Centimeters to Latitude and Longitude Before SAV perimeter information was to be exported to the EPA Bay Program, the perimeter points had to be converted from X,Y centimeters to the more generally applicable latitude and longitude. This is done via a three step two dimensional 1 inear interpol ation between the four corner points of every quadrangle. At the start of digitization of every chart, the location of each corner point in X,Y cm and in latitude and longitude is recorded at the head of the data file. The corners are numbered: 1 = lower left corner or chart origin 2 = upper left corner 3 = upper right corner 4 = lower right corner These corner points are then used to convert each individual X,Y perimeter point to latitude and longitude. If additional files are needed for a given chart, a new set of corner points are digitized and stored at the head of these files. The steps for the conversion of from X,Y cm to lat. and long. are: 1. Transpose each X,Y perimeter point from the original, non orthogonal (not at right angles) chart axes defined by the original four corner points to a new set of orthogonal chart axes and defined by a new set of four corner points. 2. Calculate centimeter to lat. and long. linear conversion factors from the transposed chart corner points via: XCONV = 0.125 / (XCORNERPOINT(4) - XCORNERPOINT(1)) YCONV = 0.125 / (YCORNERPOINT(2) - YCORNERPOINT(1)) Where : XCONV is the X cm to lat,lon conversion factor. YCONV is the Y cm to lat,lon conversion factor. 0.125 is a constant representing the distance in decimal degrees latitude or longitude between each successive chart corner point. XCORNERPOINT(#) is the X value in centimeters of the numbered chart corner point. YCORNERPOINT(#) is the Y value in centimeters of the numbered chart corner point. 3. Perform linear conversions from orthogonal X,Y cm perimeter point to latitude and longitude via the following equations: YLAT = YCHART(1) + (YPORTH * YCONV) XLON = XCHART(1) - (XPORTH * XCONV) WHERE : YLAT is the new Y point in decimal degrees latitude. XLON is the new X point in decimal degrees longitude. YCHART(#) is the latitude of the chart corner point. XCHART(#) is the longitude of the chart corner point. YPORTH is the Y perimeter point in cm from the orthogonal chart coordinate system. XPORTH is the X perimeter point in cm from the orthogonal chart coordinate system. These new Lat,Lon perimeter points are then stored in a special EPA submission file for VIMS SAV Data. The submission file structure is fully documented in the VIMS 1987 QA project plan. Organizational Provinces for Atnalysis and Discussion 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 approximately 3 nautical miles south of Tangier Island then extending to the eastern side of the bay to an area just south of the mouth of the Little Annemessex River is referred to as the Lower Bay zone (Fig. 5). (It is important to note here that the designation for the Lower Bay and Middle Bay zone has been altered to facilitate a more accurate way of reporting SAV distribution in the mid-section of the bay, in particular in and around the major is1and complex from Tangier to Bloodsworth Is1and. ) The area between the south shore of the Little 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: polyhal ine (18-25'/00), Lower zone; mesohal ine (5-18'/00), Middle zone; 01 igohal ine (0.5-5~/00), Upper zone. A1 though the major rivers and smaller tributaries of the bay have their own salinity regimes, the distribution of SAV in each river is 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. 5, Table 3). These sections, which were first delineated for the 1984 survey (Orth, et. al, 1985) and have been slightly modified for the 1987 survey, denote relatively distinct parts of the bay and its tributaries that are readily identifiable from a map. Sections 1 through 4 are located in the Upper Bay zone. Sections 5 through 13 are located in the Middle Bay zone, and sections 14 through 21 are located in the Lower Bay zone. Appendix B gives the lat. and long. of the boundary points of each Chesapeake Bay section. SAV distribution in Chincoteague Bay is presented and discussed as a separate section. Figure 5. 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 boundary positions) TABLE 3. AREA DESCRIPTION FOR EACH OF 21 MAJOR SECTIONS OF THE CHESAPEAKE BAY SAV STUDY AREA.** 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, and to include SAV on the Swan Point 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 Is1and to include the Choptank and Little Choptank 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. ------.-...... continued TABLE 3.** (continued) Section 12. Middle Eastern Shore - all areas south of Taylor Island and north of a line bisecting Cedar Island to include the Big and Little Annemessex Rivers, Fishing Bay, and the Honga, Nanticoke, Wicomico and Manokin Rivers. Section 13. Mid-bay Island Complex - all areas in and adjacent to Bloodsworth, South Marsh, Smith and Tangier Islands. Section 14. Lower Eastern Shore - a1 1 areas south of a 1 ine bisecting Cedar Island and located just above the Maryland-Virginia line to Fisherman's Island. 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, Pi ankatank F!i ver and Mi1 ford Haven area. Section 17. New Point Comfort Flegion - 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 north of a line bisecting the large shoal area around the Guinea Marsh area. Section 19. York River - all areas along the north shore from Clay Bank to the Guinea Marsh area and south of a line bisecting the large shoal area around the Guinea Marsh area, and along the south shore to include the north shore of Goodwin Island. 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. **- Sections 12, 13, 14, 18, 1!3, and 20 were given new boundaries for the 1987 report which also changes the delineation of the three major zones. (See report for these changes ,and see Figure 5 and Appendix B for boundary 1 ocat ions) . Ground Truth and Other Data Bases Ground truthing was accomplished by cooperative efforts of a number of agencies and individuals. Although incomplete for most areas, ground truthing confirmed the existence of some SAV beds mapped from 1987 aerial photography, located a few SAV beds not visible from the photography, and provided species data for most of these beds. For those areas in Virginia waters where aerial photographic evidence of SAV beds was inconclusive, photo-verification was accomplished by ground truthing. Observations were principally made from small boats and by divers snorkeling over areas indicated from the photographs. In several river systems included in this survey (York, Piankatank and Rappahannock) where VIMS researchers transpl anted SAV (principal ly eel grass), transpl ant sites also were examined carefully by divers for any extant SAV. U.S. F&WS Citizen survey data were also added to the Virginia maps in Appendix C. In addition, a great deal of ground truth information could be extrapolated from earlier studies (Orth et al., 1979; Orth and Moore, 1982) since SAV beds in this region contain primarily one or two species and have not undergone drastic fluctuations since the first bay-wide survey in 1978. In Maryland, ground truth data were obtained in 1987 by the USGS Potomac River study, two SAV research and transplanting projects, and the Citizen and Charterboat Captain volunteer surveys. The field study in the Potomac River by the USGS (Rybicki et al., 1988) from the Chain Bridge near Pimmit Run at Washington, D.C. to the 301 bridge near Morgantown, Md. (Figs. 6, 7) used shoreline surveys and sampled transects to document the distribution of SAV in the tidal Potomac River and transition zone. The USGS conducted shoreline surveys in the tidal freshwater portion of the river and tributaries (Fig, 6) in late June and early October of 1987 by boat, using rakes to collect samples to determine presence or absence of SAV. Plants were identified by species and the proportion of each was estimated for vegetated areas. Each vegetated area with species proportions was referenced on USGS 7.5 minute top0 maps. The transition zone (Fig. 7) was surveyed in late July by raking for SAV at previously established vegetation transects and by spot-checking between transects and in small tributaries. Transects were pe>ppendicular to shoreline and terminated just beyond vegetation or at 60 meters when no SAV was present. All species were identified and tabulated by transect. Codes for the transects in Figs. 6 and 7 contain the location and the river or tributary mile. For example, in MN-O1T-2, MN is Mattawoman Creek (Fig. 6), 01T is one nautical mile up the tributary from the mouth, -2 is the second transect; in PY-OGR, PY is Piscataway Creek (Fig. 7), 06R is the sixth transect on the edge of the main river. Data from these surveys were transferred to the SAV distribution maps in Appendix C. One SAV transplanting project being conducted on the Susquehanna Flats by Stan Kollar of Harford Community College (HCC) provided data in the form of species presence by percentage, primarily by visual estimates. Species locations from these data were added to the SAV maps in Appendix C. A SAV research group at University of Maryland Horn Point Environmental Laboratory (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 (Appendix C) indicating the species reported for 1987. Figure 6. Location of vegetation sampling transects in the tidal Potomac River above Mattawoman Creek. \,.A \,.A 10 MILES 0 5 10 KILOMETERS Figure 7 Location of USGS vegetation sampl ing transects from Mattawoman Creek to Port Tobacco River. 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 Maryland Department of Natural Resources (DNR) Watermen's Assistance Program. Boat captains were provided with reduced SAV quadrangle maps to aid in location of SAV beds and with data sheets on which to record information on each SAV bed identified. Sampling of SAV sites was 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. (See maps, Appendix C, for these data.) Private citizens volunteered to assist in the SAV ground survey under guidance of the United States Fish and Wildlife Service (F&WS) and the Chesapeake Bay Foundation (CBF). 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, how many and which kind of species, grass bed size, percentage area covered, and location description. All information from the Charterboat Captain's survey and Citizen's survey was submitted to Linda Hurley (F&WS) and Margaret Podlich (CBF) for processing. Species locations were mapped in Appendix C. Ground survey information was included on the SAV distribution and abundance maps in Appendix C 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 identify 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 on the map unless it was redundant. Data Presentation SAV distribution data are presented by topographic quadrangle (Tabl e 4), by section and zone (Tabl e 5), and by quadrangles within a section (Tabl e 6). Topographic quadrangle maps annotated with a1 1 SAV beds are presented in Appendix C, while individual bed areas for each quadrangle are given in Appendix D. TABLE 4. TOTAL AREA OF SAV IN HECTARES BY TOPOGRAPHIC QUADRANGLES FOR 1978, 1984, 1985, 1986 AND 1987. QUADRANGLE 1975 1984 1985 1986 1987 Conowingo Dam, Md.-Pa. Aberdeen , Md. Havre de Grace, Md. North East, Md. El kton , Md. White Marsh, Md. Edgewood, Md. Perryman, Md. Spesuti e, Md. Earleville, Md. Ceci 1 ton, Md. Bal timore East, Md. Middle River, Md. Gunpowder Neck, Md. Hanesv ill e, Md. Betterton, Md. Galena, Md. Curtis Bay, Md. Sparrows Pt., Md. Swan Point, Md. Rock Hal 1 , Md. Chestertown, Md. Round Bay, Md. Gibson Island, Md. Love Point, Md. Langford Creek, Md. Centrevil ley Md. Washington West, Md.-DC-Va. Washington East, DC-Md. South River, Md. Annapolis, Md. TABLE 4. (continued) QUANDRANGLE Kent Island, Md. Queenstown, Md. Alexandria, Va.-DC-Md. Deale, Md. Cl aiborne, Md. St. Michaels, Md. Easton, Md. Fort Belvoir, Va.-Md. Mt. Vernon, Md.-Va. Lower Marl boro, Md. North Beach, Md. Ti1 ghman , Md. Oxford, Md. Trappe, Md. Preston, Md. Quantico, Va. -Md. Indian Head, Va.-Md. Benedict, Md. Prince Frederick, Md. Hudson, Md. Church Creek, Md. Cambridge, Md. East New Market, Md. Widewater, Va.-Md. Nanjemoy, Md. Mathias Pt., Md.-Va. Popes Creek, Md. Mechanicsville, Md. Broomes Is1and, Md. Cove Pt., Md. Taylors Island, Md. OmQI bmd*- a3 WWeO g dyb OI~COOQI * *bc‘/W. .O . . . . .O~O~O-0 ' . N we-*0°eCOmN4 0 NmO* 4 4 .-I comb 4 edWN NcD4 m PC cn I I i&&~iI o I wcu I 4m0 I I I owmm I I I I I wem 4 CON 4 CU w w m4a3 4 4mN m > n *um c, m c> * K >'e 1 '0UZ-- rZE 0 -54 m -n ,-I+= ,"ln ? u Cnt'Q-6 mv) - n H 3%- C s+'t' T-6 omm F C C +'C aJY L0-6 -6 V, u aJ.7 L mu mow ZT 0 lnH LEO ol-E L om C 0 s 0 an 3 ln O-I " 3 0 r +I- lnn " w lnor hE aJ (d k5.F r: -6 aJ at'w m 0 FOLmmt' 0 ZU3 0 F .r C mL.7 t-t- L KCKt- L *K oms= ..r=L L oom0.- 0 t' t' .r ,a0 t'c'aam smmI3ZO mma mor maul-r TABLE 4. ( conti nued ) QUANDRANGLE Mount Landing, Va. Tappahannock, Va. Lottsburg , Va. Heathsville, Va.-Md. Burgess, Va .-Md. Ewe11 , Va.-Md. Great Fox Island, Va.-Md. Crisfield, Va.-Md. Saxis, Va.-Md. Ounnsville, Va. Morattico, Va. Lively, Va. Reedville, Va. Tangier Is1and, Va. Chesconessex, Va. Parks1ey , Va. Urbanna, Va. Iwington, Va. Fleets Bay, Va. Nandua Creek, Va. Pungoteague , Va. West Point, Va. Sal uda , Va. Wilton, Va. Del taville, Va. Jamesville, Va. Toano, Va. Gressi tt, Va. Ware Neck, Va. Mathews, Va. Franktown, Va. * dCnCU0 COmCUmP- cn * *CSd;Y I , cnma-**m m 53 110010 II *'* I000 ' I mmwm ooCUm4I IOm 0 ma-Lob mm 4 CO e b OCU CUP (U 4 ..... 1 1 Owe-e 1 1 1 M I0I QP- I 4COd m m Nu? CU CUdrnrnO V) b ?'?'9'2P: (Uw 1 140-a-N 1 I 1 03 I + 1 1 C I 44e-e 4 CUm r\! m .. C C, C,rb m rb L rb =I> m > 0 >* -. 2- v," . e "rb ' -. m c -> ahg cn>ca5cnm .r >+'a L >aaJ>m 9C% m -r> .J n >- ClJoClJ>, -a cans -t'T C, ZZ L L L ">V)CV)CClC- -c CCcn a C V) E E @ aJ.rT 0 ClJ 0 0 OC, C,Y aJ > aJ 0 'am- OV-C,rnE cn mt' Lv as 0-U W-r YO- .rU ClJ 0 0 0 0 OF t'LC0yh.r aJLaJL 3 3.r 'I-t'a V) m m L, as3 Pa, 2 ca DWI- 9 LC, sa ClJT L 0.r- U aJ 0 0- w 0%-rb 70m23a4200wo aaw ZZJa TABLE 4. ( conti nued ) QU AND RANGLE 1978 1984 1985 1986 1987 Kempsville, Va. - Princess Anne, Va. - Wye Mills, Md. - Brist01 , Md. - Fowling Creek, Md. - Port Tobacco, Md. - Charlotte Hal 1 , Md. - .'mardei a Springs, bib. - Wetipqui n, Md. - Selbyville, Md. - Assawoman Bay, Md. - Berlin, Md. - Ocean City, Md. - Public Landing, Md. - Tingles Island, Md. - Girdle Tree, Md.-Va. - Boxi ron , Md. -Va. - Whi ttington Point, Md.-Va. - Chincoteague West, Va. - Chi ncoteague East, Va. - Anacostia, D.C.-Md. - TOTAL SAV - Chesapeake Bay 16,622.40 TOTAL SAV - Chincoteague Bay TABLE 4. (continued) 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 1 ikely had SAY in 1978 based on data collected in subsequent years. Area not photographed in 1984 or 1985. We made the assumption that the 1984 and 1985 distributions would be similar to the 1978 distribution. Area was photographed and mapped in 1986. Area was photographed in 1987 and was known to have SAV in 1987 but was not mapped because SAV beds were too narrow and obscured by the shoreline at 1:24000 scale. In 1987 ground truthing revealed narrow beds fringing the shore1 ine of small tributaries of the Chickahominy River (see map, Appendix C) . 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 1986 SAV report (Orth, et. a1 . , 1987) for discussion of Section 2, Upper Eastern Shore, and Section 3, Upper Western Shore, in Results, and maps in APPENDIX C. Aerial photography unavail abl e in 1986, therefore, SAV acreage data not collected. SAV presence verified by ground truth surveys. See 1986 SAV report (Orth, et. a1 . , 1987) for discussion of Section 21, James River, in Results. Presence of SAV beds not detected from 1987 aerial photography. Information provided by Linda Hurley of the USF&WS indicated presence of SAV. TABLE 5. NUMBERS OF HECTARES OF BOTTOM COVERED WITH SUBMERGED AQUATIC VEGETATION IN 1987 FOR SECTIONS WITHIN THE THREE ZONES OF THE CHESAPEAKE BAY AND IN CHINCOTEAGUE BAY. (Section boundaries redefined for 1987. See Figure 5, Table 3 and Appendix B for boundary locations.) Zone !;ect ion AREA (HECTARES) 1. Susquehanna Fl ats 2,219 Upper 2. Upper Eastern Shore 103 3. U~~elrWestern Shore 117 4. chester River 515 Zone Total 2,954 ...... 5. Central Western Shore 0 6. Eastern Bay 900 7. Choptank River 356 Middl e 8. Patuxent River 4 1 9. Middle Western Shore 0 10. Lower Potomac River 4 58 11. Upper Potomac River 1,655 12. Middle Eastern Shore 1,527 13. Mid-Bay Island Com~lex 4,265 Zone Total 9,202 ------...... 14. Lower Eastern Shore 4,036 15. Reedvi 11e 324 Lower 16. Rappahannock River Complex 208 17. New Point Comfort Region 238 18. Mobjack Bay Complex 1,227 York River 608 Lower Western Shore 1,322 James River 0 Zone Total 7,963 ...... TOTAL SAV FOR CHESAPEAKE BAY 20,119 TOTAL SAV FOR CHINCOTEAGUE BAY 2,301 TABLE 6. NUMBER OF SQUARE METERS OF SAV IN 1987 FOR EACH QUADRANGLE CONTAINED WITHIN THE 21 SECTIONS OF THE CHESAPEAKE BAY AND FOR CHINCOTEAGUE BAY. MAP CODE NUMBERS FROM TABLE 2 IN PARENTHESES. SECTION QUADRANGLE AREA Susquehanna Flats - 1 Conowingo Dam (1) Aberdeen (2) Havre de Grace (3) North East (4) El kton (5) Perryman (8) Spesutie (9) Earleville (10) 22,187,300 sq.m 2,218.73 hectares 5,482.48 acres Upper Eastern Shore - 2 North East (4) 56,482 El kton (5) 0 Perryman (8) 0 Spesutie (9) 225,071 Earlevil le (10) 46,884 Cecilton (11) 0 Gunpowder Neck (14) 0 Hanesvil le (15) 423,504 Betterton (16) 198,125 Galena (17) 75,689 Swan Point (20) 0 Rock Hall (21) 0 1,025,740 sq.m 102.57 hectares 253.47 acres Upper Western Shore - 3 White Marsh (6) Edgewood (7) Perryman (8) Spesutie (9) Baltimore East (12) Middl e Ri ver ( 13) Gunpowder Neck (14) Hanesville (15) Curtis Bay (18) Sparrows Point (19) Swan Point (20) Round Bay (23) Gibson Island (24) cont inued TABLE 6. (continued) Upper Western Shore - 3 (continued) Love Point (25) 1,167,700 sq.m 116.77 hectares 288.54 acres Chester River - 4 Betterton (16) 0 Galena (17) 0 Swan Point (20) 16,049 Rock Hall (21) 53,110 Chestertown (22) 0 Love Point (25) 0 Langford Creek (26) 4,991,752 Centrevill e (27) 14,474 Kent Island (32) 0 Queenstown (33) 74,591 5,150,020 sq.m 515.00 hectares 1,272.57 acres Central Western Shore - 5 Curtis Bay (18) Round Bay (23) Gibson Island (24) South River (30) Annapolis (31) Deale (35) North Beach (42) 0 sq.m 0 hectares 0 acres Eastern Bay - 6 Annapolis (31) Kent Island (32) Queenstown (33) Cl ai borne (36) St. Michaels (37) Easton (38) Ti 1ghman (43) Oxford (44) 9,002,720 sq.m 900.27 hectares 2,224.57 acres conti nued 40 TABLE 6. (continued) Choptank River - 7 Clai borne (36) 0 St. Michaels (37) 0 Easton (38) 0 Ti1 ghman (43) 854,462 Oxford (44) 55,139 Trappe (45) 0 Preston (46) 0 Hudson (51) 1,677,407 Church Creek (52) 494,585 Cambridge (53) 0 East New Market (54) 0 Taylors Island (62) 474,703 Golden Hi11 (63) 0 Fowling Creek (160) 0 3,556,280 sq.m 355.63 hectares 878.76 acres Patuxent River - 8 Deale (35) \ 0 Lower Marl boro (41) 0 North Beach (42) 0 Benedi ct (49) 12,655 Prince Frederick (50) 0 Mechanicsvil le (59) 20,782 Broomes Isl and (60) 202,040 Cove Point (61) 46,206 Hol lywood (70) 49,740 Sol omons Is1and (71) 83,334 Brist01 (159) 0 414,758 sq.m 41.47 hectares 102.49 acres Middle Western Shore - 9 North Beach (42) Prince Frederick (50) Hudson (51) Broomes Island (60) Cove Point (61) Taylors Island (62) Solomons Island (71) Barren Island (72) St. Marys City (80) Point No Point (81) Rich1and Point (82) continued TAB'LE 6. (continued) Middle Western Shore - 9 (continued) Point Lookout (90) 0 0 sq.m 0 hectares 0 acres Lower Potomac River - 10 Nanjemoy (56) Mathias Point (57) Popes Creek (58) Mechanicsvil le (59) King George (65) Dahl gren (66) Col on ia1 Beach North (67) Rock Point (68) Leonardtown (69) Hollywood (70) Solomons Is1and (71) Col oni a1 Beach South (76) Stratford Hall (77) St. Clements Is1and (78) Piney Point (79) St. Marys City (80) Machodoc (87) Kinsale (88) St. George Is1and (89) Point Lookout (90) Lottsburg (96) Heathsvi 11e (97) Burgess (98) Port Tobacco (161) Charlotte Hal 1 (162) 4,581,660 sq.m 458.17 hectares 1,132.13 acres Upper Potomac River - 11 Washington West (28) 0 Washington East (29) 0 A1 exandr ia (34) 4,709,559 Fort Be1 voi r (39) 193,510 Mt. Vernon (40) 10,567,873 Quanti co (47) 462,680 cont inued TABLE 6. (continued) Upper Potomac River - 11 (continued) Indian Head (48) 175,902 Widewater (55) 391,663 Nanjemoy (56) 0 Mathias Point (57) 0 Passapatanzy (64) 0 King George (65) 36,080 Dahl gren (66) 0 Port Tobacco (161) 8,868 16,546,000 sq.m 1,654.60 hectares 4,088.52 acres Middle Eastern Shore - 12 Taylors Is1and (62) 0 Golden Hill (63) 25,312 Barren Isl and (72) 2,698,140 Honga (73) 6,320,436 Wingate (74) 1,719,705 Nant icoke (75) 0 Richland Point (82) 424,582 Bloodsworth Is1and (83) 631,752 Deal Island (84) 602,364 Monie (85) 245,963 Terrapin Sand Point (92) 116,443 Marion (93) 1,601,402 Great Fox Island (100) 405,412 Crisfield (101) 474,794 Mardel a Spri ngs (163) 0 Wetipquin (164) 0 15,266,300 sq.m 1,526.63 hectares 3,772.30 acres Mid-Bay Island Complex - 13 Richland Point (82) 0 Bl oodsworth Island (83) 4,925,260 Deal Is1and (84) 0 Kedges Straits (91) 6,933,686 Terrapin Sand Point (92) 816,166 Ewe11 (99) 20,129,335 Great Fox Is. (100) 5,070,650 continued TABLE 6. (continued) Mid-Bay Island Complex - 13 (continued) Tangier Is1 and (107) 4,776,080 42,646,200 sq.m 4,264.62 hectares 10,537.88 acres Lower Eastern Shore - 14 Great Fox Is1 and(100) 5,423,941 Crisfield (101) 757,425 Saxis (102) 0 Tangier Island (107) 215,117 Chesconessex (108) 9,117,026 Parks1 ey (109) 2,358,039 Nandua Creek (113) 3,787,050 Pungoteague (114) 6,967,337 Jarnesvi 1le (119) 4,195,310 Franktown (124) 3,927,005 Cape Charles (133) 2,664,183 Cheri ton (134) 735,050 Elliotts Creek (142) 94,300 Townsend (143) 119,663 40,362,000 sq.m 4,036.20 hectares 9,973.45 acres Reedville - 15 Heathsvi 11e (97) 0 Burgess (98) 0 Reedvi 11e (106) 879,860 Irvington (111) 0 Fleets Bay (112) 2,356,672 3,236,500 sq.m 323.65 hectares 574.88 acres Rappahannock River Complex - 16 Tappahannock (95) Dunnsvi 11e (103) Morattico (104) Lively (105) Urbanna (110) Irvington (111) Fleets Bay (112) Saluda (116) Wilton (117) Deltaville (118) Ware Neck (122) continued TABLE 6. (continued) Rappahannock River Complex - 16 (continued) Mathews (123) 285,143 2,076,490 sq.m 207.65 hectares 513.10 acres New Point Comfort Region - 17 Mathews (123) 0 New Point Comfort (132) 2,384,410 2,384,410 sq.m 238.44 hectares 589.19 acres Mobjack Bay Complex - 18 Ware Neck (122) 1,943,175 Mathews (123) 295,692 Achilles (131) 5,133,250 New Point Comfort (132) 4,902,160 12,274,200 sq.m 1,227.42 hectares 3,032.95 acres York River - 19 Toano (120) 0 Gressi tt (121) 0 Williamsburg (129) 0 Clay Bank (130) 0 Achilles (131) 2,420,750 New Pt. Comfort (132) 3,196,458 Hog Island (138) 0 Yorktown (139) 9,776 Poquoson West (140) 452,685 Poquoson East (141) 0 6,079,660 sq.m 607.97 hectares 1,502.28 acres Lower Western Shore - 20 Poquoson West (140) 2,452,510 Poquoson East (141) 7,524,160 Elliotts Creek (142) 0 Newport News North (146) 0 Hampton (147) 2,839,868 Norfolk North (150) 0 continued TAB1.E 6. (continued) Lower Western Shore - 20 (conti,nued) Little Creek (151) 0 Cape Henry (152) 405,040 Kempsvi 11e (156) 0 Princess Anne (157) 0 13,222,100 sq.m 1,322.21 hectares 3,267.18 acres James River - 21 Toano (120) Westover (125) Charles City (126) Brandon (127) Norge (128) Williamsburg (129) Savedge (135) Cl aremont (136) Surry (137) Hog Island (138) Yorktown (139) Bacons Castle (144) Mu1 berry Is1 and (145) Newport News North (146) Hampton (147) Benns Church (148) Newport News South (149) Norfolk North (150) Little Creek (151) Chuckatuck (153) Bowers Hill (154) Norfolk South (155) Kempsville (156) 0 sq.m 0 hectares 0 acres cont i nued 46 TABLE 6. (continued) Chincoteague Bay Berlin (167) 70,564 Public Landing (169) 0 Tingles Is1 and (170) 10,205,999 Girdle Tree (171) 0 Boxiron (172) 6,649,380 Whittington Point (173) 2,079,020 Chincoteague West (174) 0 Chinoteague East (175) 4,010,000 23,014,963 sq.m 2,301.50 hectares 5,687.00 acres SECTION 4 RESULTS 1. SUSQUEHANNA FLATS There were 2219 hectares of SAV in the Susquehanna Flats section in 1987 (Tables 4-6, Fig. 8). SAV beds were located principally in two main areas: 1. moderate to dense fringing beds in the Susquehanna River consisting primarily of M. s~icatum,with P. pectinatus, C. demersum, y. americana and 1. suada1u~ensA in lesser amounts from Robert, Wood and Spencer Islands to the river mouth at Havre de Grace on the west side, and to Stump Point at the mouth of Mill Creek on the north side; and 2. a large area of patchy SAV located in the broad shoal area at the river mouth. This broad shoal consisted primarily of small patches of 1. spicatum, with P. pectinatus, C. demersum and N. quadalu~ensis. A total of nine species (1. s~icatum, H. dubia, y. americana, H. verticillata, C. demersum, P. pectinatus, N. guadalu~ensis,P. perfoliatus, and Najas spp.) have been reported either by Stan Kollar of Harford Community College or the citizens' field survey. SAV beds consisted of up to six species, with 1. spicatum being dominant. H. dubia, y. americana, H. verticillata and C. demersum also occurred in significant abundance. The total SAV abundance in this section has remained relatively stable since 1984, although beds in the river portion have increased in density. SAV is virtually absent from Mill Creek, Furnace Bay, Northwest River, Swan Creek, Spesutie Is1 and and western IIl k Neck. The charterboat captain survey located only several small beds of M. s~icatumin the Northeast River, i ncl udi ng two SAV beds i dent i f i ed from aeri a1 photographs. Figure 8. Distribution of SAV in Susquehanna Flats (Section 1). 2. UPPER EASTERN SHORE There were 103 hectares of SAV mapped for the Upper Eastern Shore section in 1987 (Tables 4-6, Fig. 9), consisting of sparse to moderately dense, small beds. Principal locations of beds were in the 1ower El k River, Swan Creek, lower Sassafras River, Stillpond Creek, and the mouth of Churn Creek. Very little SAV was mapped in the Bohemia River and along the mainstem of the bay from Stillpond Creek to Swan Point. This section has contained relatively little SAV since the baywide SAV survey began in 1978, although, historically, this section has contained abundant SAV. -M. s~icatum and V. americana were the two most commonly reported species, with six other species reported in lesser amounts as determined by the citizen and charterboat captain surveys. Figure 9. Distribution of SAV in Upper Eastern Shore (Section 2). 3. UPPER WESTERN SHORE There were 117 hectares of SAV mapped from the aerial photographs in 1987 for the Upper Western Shore section (Tables 4-6, Fig. 10). SAV beds were concentrated in the Bush, Gunpowder, and Middle River areas and in Saltpeter and Seneca Creeks. Very little SAV was reported in the Back, Patapso, and Magothy Rivers. -M. spicatum and y. americana were the two most abundant species as reported by the citizen and charterboat captain surveys, with 5. canadensis, -Z. palustris, P. pectinatus, 5. canadensis, P. perfoliatus and C. demersum being occasionally reported. The amount of SAV reported for 1987 is less than previous years. SAV in this section appears to be quite dynamic, with potential for the many small areas that only are reported in the ground truth surveys to rapidly expand if water quality conditions improve. Figure 10. Distribution of SAV in Upper Western Shore (Section 3). 4. CHESTER RIVER There were 515 hectares of SAV in the Chester River section in 1987 (Tables 4-6, Fig. 11). Most of the SAV was located adjacent to Eastern Neck and Eastern Neck Island, and in the Chester River. Dense beds were found in Grays Inn and Langford Creeks off the Chester River. The remainder of Chester River, including the area adjacent to Kent Is1and, was re1ati vely unvegetated. Additional beds are found in Swan and Huntingfield Creeks, located above Eastern Neck on the Chesapeake Bay. Six species of SAV were reported from this section in 1987 by the citizen and charterboat captain surveys. R. maritima was by far the most abundant species in this section with P. pectinatus, P. perfoliatus, M. s~icatum,5. canadensis, and 2. palustris being reported less frequently. The Chester River area, historically, supported some of the most dense and diverse stands of SAV in the middle reaches of the bay (some of which are still present today). 5. CENTRAL WESTERN SHORE There was no SAV observed from the aerial photography in the Central Western Shore section in 1987 (Tables 4-6, Fig. 12). In fact, this area has had very little SAV since 1984. Although not evident in theaerial photography, the citizens' survey reported SAV in the Deale and South River quadrangles, with R. maritima and Z. palustris found in Deale and I. palustris found in South River. Z. palustris has been reported from the headwaters of the Magothy, Severn and South Rivers (F. Dawson, pers. comm.). Figure 11. Distribution of SAV in Chester River (Section 4). Figure 12. Distribution of SAV in Central Western Shore (Section 5). 6. EASTERN BAY There were 900 hectares of SAV identified from the Eastern Bay section in 1987 (Tables 4-6, Fig. 13). SAV occurred as mostly sparse to dense beds throughout this section and is the most that has been observed since 1978. The large increase in SAV abundance from 1986 may represent an artifact of the aerial photographs, since SAV was reported throughout this section by the charterboat captain survey in 1986. In 1987, the SAV was identified as being particularly abundant along both shorelines in Crab Alley Bay, Prospect Bay, Parson Island, Piney Neck and the lower portion of the Miles River. Little SAV was present from Punch Point on the Western shore of Eastern Bay to Pawpaw Cove on Tilghman Island. e. maritima is, by far, the most abundant species as reported by both the citizens and charterboat captain surveys, with only one other species, P. perfoliatus, reported once from the Eastern Bay region. There are numerous reports of R. maritima in areas where beds were not identified from the photographs. These sightings probably represent areas that are sparse and patchy and would not show up on the imagery. Therefore, estimates may be low. Figure 13. Distribution of SAV in Eastern Bay (Section 6). 7. CHOPTANK RIVER There were 356 hectares of SAV observed in the Choptank River section in 1987 (Tables 4-6, Fig. 14). Most of the SAV occurred in sparse to dense beds in only a few areas. These were principally along the eastern side of Tilghman Island, the lower portion of Harris Creek, the mouth of Chapel Creek, Cook Point Cove, Covey Creek, Brannock Bay, and Cators Cove. There was almost no SAV in Broad Creek, Tred Avon River and much of the Little Choptank River. Vegetation above Chapel Creek in the Choptank River is sparse but not completely absent. R. maritima was found by HPEL personnel behind Hambrooks Bar near Cambridge, and in front of the Horn Point Laboratory boat basin. Z. palustris grew in Dickerson Bay, Trappe Creek, Bolingbroke Creek and Foxhole Creek in the early part of the growing season. Ground surveys in the river by citizen and charterboat captain surveys, as well as scientists from the University of Maryland's Horn Point Environmental Laboratories, located four species of SAV in this section, with R. maritima being the most prevalent. P. pectinatus and L. palustris was observed in scattered locations, while L. marina was reported at only one location. R. maritima was reported from a number of areas in this section that did not appear to have SAV from the aerial photographs. Figure 14. Distribution of SAV in Choptank River (Section 7). 8. PATUXENT RIVER There were 41 hectares of SAV reported in the Patuxent River section in 1987 (Tables 4-6, Fig. 15). SAV in the Patuxent River has always been at very low levels of abundance and has not exceeded 50 hectares in any year since the baywide effort began in 1978. There were sporadic sightings of four SAV species in the Patuxent River by citizens and charterboat captains. Those species reported were: 1. palustris, P. pectinatus, M. spicatum, and -R. maritima. 9. MIDDLE WESTERN SHORE There were no SAV beds identified in the Middle Western Shore section in 1987 (Tables 4-6, Fig. 16). Four species cited by the citizens' survey (e. maritima, C. demersum, 1. palustris, P. pectinatus) occurred on the St. Marys quadrangle. Most of the area in this broad section of the bay is of high energy, exposed beaches that are unsuitable for SAV growth. We would therefore not expect large expanses of SAV, rather only small pockets of SAV in creeks or ponds that empty into the bay. Previous surveys have reported no more than 23 hectares of SAV. Figure 15. Distribution of SAV in Patuxent River (Section 8). Figure 16. Distribution of SAV in Middle Western Shore (Section 9). 10. LOWER POTOMAC RIVER There were 458 hectares of SAV identified in the Lower Potomac River section from the 1987 aerial photography (Tables 4-6, Fig. 17). Most of the SAV in this section occurred in the region near the Rt. 301 bridge, in Nanjemoy and Port Tobacco Creeks and in the shoreline adjacent to these two creeks. A majority of SAV beds were moderately to densely vegetated. SAV beds were identified as fringing along the eastern side of Mathias Point Neck to the Rt. 301 bridge. Several small beds were observed in Machodoc and Cuckhold Creeks, just below the Rt. 301 bridge. The USGS survey found y. americana to be the most common species here, with M. s~icatum,P. perfoliatus, -P. pectinatus, C. demersum, and 2. palustris also being reported (see quadrangles in Appendix C for USGS species information). Citizen volunteers reported many of these same species. SAV was absent in the remainder of this section from just below the Rt. 301 bridge to the river mouth except for small but moderately dense beds in and adjacent to the St. Marys River. Citizen survey observations indicate that R. maritima was the only species present here. Figure 17. Distribution of SAV in Lower Potomac River (Section 10). 11. UPPER POTOMAC RIVER There were 1,655 hectares of SAV mapped in the Upper Potomac River section from the 1987 aerial photographs (Tables 4-6, Fig. 18). The area of the river between Marshall Hall and the Woodrow Wilson bridge was very densely vegetated, with H. verticillata being by far the dominant species here. Although the total abundance of SAV in this section had not changed as dramatically in the last three years as before that time, SAV continued to be observed further down river in smaller, but densely vegetated beds. -H. verticillata is found down to Quantico and Mallows Bay. Numerous SAV species were present, with M. s~icatum,C. demersum, H. dubia, Na.jas spp. and y. americana being reported most commonly in this region, while Z. palustris, P. pectinatus and N. quadalu~ensiswere reported less frequently. Results from the USGS survey of this region were very similar to the data collected from the aerial photography (Rybicki , et a1 . , 1988) (Figs. 19, 20). Species information from the USGS survey can be found on the topographic quadragles located in Appendix C. Their survey continued to confirm aerial photographic observations of the absence of SAV from Occoquan Bay south to Quantico. SAV was present around Quantico but, except for a few scattered beds, is absent along the western side of the river from Quantico south to Mathias Point Neck. Figure 18. Distribution of SAV in Upper Potomac River (Section 11). I I - EXPLANATION Percent cover of hydrilla in vegetated areas. >95 71 -95 31 -70 1-30 no VIRGINIA - Marshall Hall MARYLAND 10 MILES 0 5 10 KILOMETERS Figure 19. Percent cover of Hvdrilla in vegetated areas in the tidal Potomac River in 1987, 68 - EXPLANATION Percent cover of submersed aquatic vegetation. 70-100 40-70 10-40 Q 1-10 VIRGINIA - Marshall Hall MARYLAND 10 MILES 0 5 10 KILOMETERS I Figure 20. Percent cover of submersed aquatic vegetation in the tidal Potomac River in 1987. 12. MIDDLE EASTERN SHORE There were 1,527 hectares of SAV identified in the Middle Eastern Shore section (Tables 4-6, Fig. 21). For this report this section has been reorganized as indicated earlier, with boundaries given in Table 3. It now excludes South Marsh and Bloodsworth Is1ands and includes the Big and Little Annemessex Rivers. SAV beds were very abundant in: 1. the lower Honga River adjacent to Middle Hooper Island, Wroten Island, Parks Neck, and Asquith Island; 2. between Barren Is1and and Meekins Neck-Upper Hooper Is1and; and 3. the lower Manokin and the Big and Little Annemessex Rivers. Little SAV was observed in Fishing Bay, the Nanticoke and Wicomico Rivers. -R. maritima was the predominant species found by the citizen and charterboat captain surveys. They included reports from many areas that were not identified in the aerial photography. SAV in this section has undergone a very large increase since first observed in 1984 due to the rapid spread of B. maritima. 2. marina, the only other species found, was reported from one location in the Big Annemessex River. Figure 21. Distribution of SAV in Middle Eastern Shore (Section 12). 13. MID-BAY ISLAND COMPLEX There were 4,265 hectares of SAV mapped in the Mid-Bay Island Complex in 1987 (Tables 4-6, Fig. 22). This section's boundaries have been revised from the earlier surveys and now include Bloodsworth and South Marsh Islands, but exclude the area from the Big Annemessex River to Chesconessex Creek. The broad, expansive shoal area between Tangier Island and Smith Island continued to be densely vegetated by both R. maritima and Z. marina, and was by far the largest bed in the Chesapeake Bay. Shoal areas inside these two islands also were densely vegetated. SAV continued to increase in abundance around Bloodsworth and South Marsh Islands. Only R. maritima had been reported by the charterboat captain survey around these islands. 14. LOWER EASTERN SHORE There were 4,036 hectares of SAV observed in the Lower Eastern Shore section in 1987 (Tables 4-6, Fig. 23). This section has been revised for the 1987 report. It now includes the area from just above Great Fox Island to Chesconessex Creek which had been part of Section 13. Large dense beds of I.marina and R. maritima continue to persist at the mouth of Cherrystone Inlet near Cape Charles, at the mouths of Hungars Creek, Mattawoman Creek, Occahannock Creek, Craddock Creek, Pungoteague Creek, Onancock Creek, and Chesconessex Creek, at the Big Marsh area near Chesconessex Creek, at Webb Island off the mouth of Deep Creek, and on the large shoal area on the eastern side of the Fox Islands. Those areas between the above mentioned creeks were sparsely vegetated. This was due largely to the dynamic and Figure 22. Distribution of SAV in Mid-Bay Island Complex (Section 13). Figure 23. Distribution of SAV in Lower Eastern Shore (Section 14). 14. LOWER EASTERN SHORE (cont inued) exposed nature of these sites. There was very little SAV in the Pocomoke Sound area, and there was no SAV south of Old Plantation Creek just below Cape Char1 es. 15. REEDVILLE There were 324 hectares of SAV identified in the Reedville section in 1987 (Tables 4-6, Fig. 24). SAV beds consisted of sparse to moderately dense beds of B. maritima and Z. marina, as noted by the citizens' survey. Most were found in Little Bay, Dymer Creek, Indian Creek, Ball Creek, Dameron Marsh, Fleeton Point and Taskmasker Creek. 16. RAPPAHANNOCK RIVER COMPLEX There were 208 hectares of SAV observed in the Rappahannock River Complex in 1987 (Tables 4-6, Fig. 25). This was a significant increase from that reported in the last three annual surveys and was a result of the rapid spread of B. maritima into both the Rappahannock and Piankatank Rivers. In particular, dense beds of e. maritima were found in the Corrotoman River where little SAV was found prior to 1987. q. maritima was present in small scattered beds throughout these two systems, many of which did not appear on the aerial photography. A dense SAV bed consisting of B. maritima at the mouth of Carter Creek off the Rappahannock River, and a small dense bed of -R. maritima and L. marina off Willis Wharf, and on both sides of the Hole in the Wall in Milfqrd Haven, continued to persist. Figure 24. Distribution of SAV in Reedville (Section 15). Figure 25. Distribution of SAV in Rappahannock River Complex (Section 16). 16. RAPPAHANNOCK RIVER COMPLEX (continued) -Z. marina was present in very small patches off Parrott Island in the Rappahannock River, Milford Haven and Burton Point in the Piankatank River. This vegetation is the result of successful transplant efforts by VIMS scientists. 17. NEW POINT COMFORT REGION There were 238 hectares of SAV identified in the New Point Comfort Region in 1987 (Tables 4-6, Fig. 26). SAV consisted of sparse to dense beds of Z. marina and R. maritima between New Point Comfort and just north of Horn Harbor. 18. MOBJACK BAY COMPLEX The Mobjack Bay Complex contained 1,227 hectares of SAV in 1987 (Tables 4-6, Fig. 27). This section has also been revised from the 1986 report. The boundary between this section and the York River section (19) is now a line bisecting the large shoal off the Guinea Marsh area. Moderate to dense SAV beds, consisting of I. marina and R. maritima, were most abundant along the entire shoreline of the Mobjack Bay as well as in three of four tributary rivers: Severn, Ware and North. Several small beds of R. maritima were observed within the East River. The Mobjack Bay area continued to harbor some of the more extensive SAV beds on the western shore of the lower Chesapeake Bay. Figure 26. Distribution of SAV in New Point Comfort (Section 17). Figure 27. Distribution of SAV in Mobjack Bay Complex (Section 18). 19. YORK RIVER There were 608 hectares of SAV observed in the York River section in 1987 (Tables 4-6, Fig. 28). This section has also been revised from the 1986 report. The boundary between this section and the Mobjack Bay section (18) is now a 1ine bisecting the large shoal off the Guinea Marsh area. Moderate to dense SAV beds, consisting of both I. marina and R. maritima, were located principally along the north shore from Gloucester Point to the mouth of the river. The only beds present along the south shore were located on the north side of Goodwin Islands. SAV beds were absent upstream 2 of Gloucester Point except for small (<1 m ) patches of Z. marina at Little Mumfort Island on the north shore, and just below the Naval Weapons Station on the south shore. These were transplanted in 1985 and 1986 and have persisted through 1987. The SAV beds planted in 1982 and 1983 at Gloucester Point continue to thrive in 1987, similar to many naturally expanding beds along the north shore. 20. LOWER WESTERN SHORE There were 1,322 hectares of SAV mapped in the Lower Western Shore section in 1987 (Tables 4-6, Fig. 29). SAV beds, consisting of L. marina and 8. maritima, remained as dense beds in Broad Bay, Back River, Drum Island Flats and on the south side of Goodwin Island. No SAV was present in the southwest and northwest branches of Back River, or in the Poquoson River, Chisman Creek and Back Creek. OODWIN ISL. Figure 28. Distribution of SAV in York River (Section 19). Figure 29. Distribution of SAV in Lower Western Shore (Section 20). 21. JAMES RIVER The mainstem James River and tributaries emptying into the James remained, for the most part, unvegetated in 1987 (Tables 4-6, Fig. 30). A small section of the Chickahominy that was identified as having SAV in 1987 was photographed. It included Gordon and Nettles Creek, and Nayses Bay. The photography showed SAV beds as occurring in similar locations to previous aerial surveys, indicating that these beds appear to be relatively stable. However, SAV beds were not mapped. Many of the observed beds occurred in small creeks and on a topographic quadrangle were represented by a thin line. Tracing and digitizing a single line rather than a polygon shaped bed would have resulted in large errors, thereby compromising our qua1 i ty control standards. Ground survey information from a graduate student of the University of Virginia, and from several citizens indicated fringing SAV beds consisting of N. minor, N. auadalu~ensis,C. demersum and -Z. palustris in Sunken Marsh, Morris Creek and the Chickahominy main stem, on the Brandon quadrangle. SAV species are probably distributed throughout the Chickahominy River system, occupying the fringes of many tidal creeks. Figure 30. Distribution of SAV in James River (Section 21). 22. CHINCOTEAGUE BAY There were 2,301 hectares of SAV identified in the Chincoteague Bay section in 1987 (Tables 4-6, Fig. 31). Beds were mostly of moderate to dense coverage with 2. marina predominating in the southern part of the bay and R. maritima in the northern half. 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). The vegetation was concentrated in four relatively distinct areas identical to that reported in the 1986 survey. They were located west of the northern end of Chincoteague Island, and west of West Bay, Green Run Bay, and the Tingles Island area. The increase in SAV in 1987 from 1986 was a result of additional SAV being mapped in the middle and upper sections of Sinepuxent Bay which were not flown in the 1986 survey. It is likely that these beds were present in 1986. Thus, this region appears to have remained quite stable over the past several years, with little expansion observed in the other southern, oceanside lagoonal systems. SECTION 5 HISTORICAL TRENDS SAV in the Chesapeake Bay has undergone rapid fluctuations in distribution and abundance in the recent past (Orth and Moore, 1981, 1983, 1984). Although, overall, there is currently much less SAV baywide than in the recent past, patterns of change have varied from region to region within the bay. In order to assess these changes from an historical perspective, it is critical to have long term data on distribution of SAV including species presence or absence and the size of individual SAV beds in specific areas of the bay. SAV in the Chesapeake Bay has been accurately mapped on a baywide basis for the years 1978, 1984, 1985, 1986 and 1987. In addition, sections of the upper bay were mapped for 1979, and sections of the lower bay were mapped for 1971, 1974, 1980 and 1981 (Orth and Gordon, 1975; Orth, et al., 1979; Anderson and Macomber, 1979; Orth, et al., 1985, 1986, 1987). Three representative areas in the lower bay were chosen to describe changes in the distribution of SAV in this region based on the availability of digitally mapped data (Fig. 32). These areas represent three different scenarios of change that SAV has undergone since the early 1970's. In the lower York River SAV declined in the early 1970's but has slowly returned in the last five years. In the Rappahannock River area SAV almost completely disappeared in the early 1970's and has recently returned to a few sections. The eastern shore area, where SAV had not significantly declined in the 19707s, had some smaller changes in the last decade. HISTORICAL WINDOWS VA EASTERN Figure 32. Location of 3 areas used in historical trends analysis. YORK RIVER SAV data for this area, which includes all of the area in section 19, were available for 1971, 1974, 1978, 1980, 1981, 1984, 1985, 1986, and 1987 (Fig. 33). The recent changes of SAV in the York River can be characterized by: 1. an abundance of SAV in 1971, primarily along the north shore and extending upriver to Clay Bank, consisting primarily of I. marina and R. maritima (Fig. 34); 2. a rapid decline between 1971 and 1978, primarily in the upriver sections as well as the deeper portions of the establ ished beds in the downriver areas (Fig. 35), during which approximately 50% of the SAV was lost; 3. a gradual increase in SAV between 1984 and 1987, principally in the downriver portions and in those areas in close proximity to existing beds (Fig. 36). These changes suggest that SAV had been affected by a major perturbation in the early 1970's that caused a shift in the abundance of SAV from upriver to downriver areas. The pattern of change in this river, as well as others along the western shore, has suggested that factors reducing SAV abundance may be related to upland runoff. Many factors known to be associated with SAV declines (i. e. increased turbidity and dissolved nutrients) generally increase with distance upriver, and, also, effects should be more pronounced as water column depth increases. The questions currently being asked by researchers investigating these hypotheses concern whether levels of these factors are sufficient to effect the observed responses. SAV has increased gradually between 1984 and 1987, principally in the downriver sections only, indicating that suitable conditions for SAV growth have returned to these areas. Although this revegetation has LOWER YORK RIVER HISTORICAL WINDOW PLOT OF TOTAL SAV AREA FOR ALL DENSITY CLASSES YEAR Figure 33. SAV changes in the York River, 1971-1987. Figure 34. SAV in the York River, 1971. 3722. 5 3715. 0 OWER YORK RIVE SAV AREA = 452.2 HECTARES 3707. 5 Figure 35. SAV in the York River, 1978. Figure 36. SAV in the York River, 1987. occurred naturally, success of VIMS transplanting efforts along the gradient of SAV in the York River since 1978 has paralleled the natural recovery (VIMS, unpublished data). Areas upstream of the Gloucester Point - Yorktown constriction in the river are generally still unsuitable for SAV growth. RAPPAHANNOCK RIVER SAV data for the Rappahannock River, which represents a portion of Section 16, were available for the same period as the York River data (Fig. 37). Changes in SAV in this river are characterized by: 1. an abundance of SAV, consisting of both Z. marina and R. maritima, in 1971 along both shores (Fig. 38); 2. a rapid decl ine between 1971 and 1974, with SAV being almost completely eliminated from the entire river by 1974 (Fig. 39); 3. continued absence of SAV through 1986 with a rapid increase in SAV in 1987 in certain downriver areas (Fig. 40). Transplantation efforts in this river in portions that represented the historical distributional limits of SAV, generally paralleled the natural changes. Although, as with the York, both -Z. marina and R. maritima occurred in this area prior to 1971, and both subsequently declined, only R. maritima has recolonized sites along the lower half of the former SAV distribution. R. maritima has been described as a colonizer of suitable habitat, and potentially can produce an abundance of seeds more suitable for dispersion than Z. marina. Its recent rapid spread has also been observed in other sections of the bay. However, why it has spread in the Rappahannock and not the York River is as yet unclear. RAPPAHANNOCK RIVER HISTORICAL WINDOW PLOT OF TOTAL SAV AREA FOR ALL DENSITY CLASSES 800 1 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 YEAR Figure 37. SAV changes in the Rappahannock River, 1971-1987. Figure 38. SAV in the Rappahannock River, 1971. Figure 39. SAV in the Rappahannock River, 1974. Figure 40. SAV in the Rappahannock River, 1987. EASTERN SHORE SAV data for the eastern shore, which represents a portion of Section 14, were available from 1978, 1980, 1981, 1984, 1985, 1986, and 1987 (Fig. 41). Although data were not available for this area prior to 1978, additional data for a smaller subsection of this area were available prior to 1978 (Orth, et al., 1987). Changes in this section can be characterized by: 1. abundant SAV in 1978 which, based on data from the smaller historical area, was most likely not significantly different from 1971 (Fig. 42); 2. some changes between 1978 and 1980, resulting in a decrease of approximately 30% of the SAV in this section (Fig. 43); 3. a gradual increase in SAV abundance from 1980 through 1987 (Fig. 44). This eastern shore region has, to a large degree, different runoff characteristics than many of the western shore tributaries, such as the York and Rappahannock Rivers. The drainage basins of the creeks along this region are small, and circulation patterns promote flushing with clear oceanic water having fewer nutrients. Its location and response therefore support the hypothesis of runoff being an important factor affecting SAV survival in the bay region. EASTERN SHORE HISTORICAL WINDOW PLOT OF TOTAL SAV AREA FOR ALL DENSITY CLASSES I Oo0 1 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 YEAR Figure 41. SAV changes along the lower Eastern Shore, 1978-1987. Figure 42. SAV along the lower Eastern Shore, 1978. Figure 43. SAV along the lower Eastern Shore, 1980. Figure 44. SAV along the lower Eastern Shore, 1987. SECTION 6 LITERATURE CITED 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. 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. 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 11, 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 11, The Biota of North America. The University of North Carolina Press, Chapel Hi 11. 498 pp. 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. €PA. Final Report Chesapeake Bay Pro~gram. Grant No. R805953. 187 pp. Orth, R. J. and K. A. Moore. 1983. Chesapeake Bay: an unprecedented decl ine 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. and K. A. Moore. 1988. Submerged aquatic vegetation in the Chesapeake Bay: A barometer of Bay health. pp. 619-629. In: M. Lynch (Ed.) Understanding the estuary: Advances in Chesapeake Bay Res. Chesapeake Res. Consort. Pub. No. 129. CBP/TRS/24/88. Orth, R. J., K. A. Moore and H. H. Gordon. 1979. Distributionand abundance of submerged aquatic vegetation in the 1 ower Chesapeake Bay, 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. Orth, R. J., J. Simons, J. Capelli, V. Carter, A. Frisch, L. Hindman, S. Hodges, K. Moore and N. Rybicki. 1987. Distribution of submerged aquatic vegetation in the Chesapeake Bay and tributaries and Chincoteague Bay - 1986. U.S.E.P.A. Final Report. 180 pp. Radford, A. E., H. E. Ahles and C. R. Bell. 1968. Manual of the Vascular Flora of the Carol inas. The University of North Carolina Press, Chapel Hill. 1183 pp. Rybicki, N., R. T. Anderson, and V. Carter. 1988. Data on the distribution and abundance of submersed aquatic vegetation in the tidal Potomac River and Transition Zone of the Potomac Estuary, Maryland, Virginia, and the District of Columbia, 1987. U. S. Geological Survey Open-File Report 88-307. 31 pp. Stevenson, J. C. and N. Confer. 1978. Summary of available information on Chesapeake Bay submerged vegetation. U.S. Dept. of Interior, Fish and Wi ldl i fe 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 11, Iconograph of the Characeae. Verlag Von J. Cramer, Weinheim. 395 icones with Index. APPEND ICES 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 zevl ani ca Klei n. ex Willd., em. Nitella flexilis (L). Ag., em. Potamogetonaceae Potamoqeton perfoliatus L. var. (pondweed) bupl euroides (Fernal d) Farwell Redhead grass Potamoqeton pectinatus L. Sago pondweed Potamoqeton crispus L. Curly pondweed Potamoseton pusillus L. Slender pondweed Ruppi aceae Rupoia maritima L. Widgeongrass Zanni chell iaceae Zanni chell ia pal ustris L. Horned pondweed Najadaceae Na.ias quadal upensi s (Sprengel ) Southern naiad Magnus Na.ias qracillima (A. Braun) Magnus Nai ad Na.ias minor A1 1 ioni Hydrocharitaceae Vallisneria americana Michaux Wild celery (frogbi t) Elodea canadensis (Michaux) Common elodea Eqeri a densa Planchon Water-weed Hvdrilla verticillata (L.f.) Hydril la Boy1e Pontedariaceae Heteranthera dubia (Jacquin) Water stargrass (pickerelweed) MacMi 11 ian Ceratophyllaceae Cerato~hvllumdemersum L. Coont ai 1 (coontail) Trapaceae Trapa natans L. Water chestnut Hal oragaceae Mvriophvll um spicatum L. Eurasian (water mi1 foi 1 ) water mi1 foi 1 Zosteraceae Zostera marina (1.) Eel grass APPENDIX B LATITUDE AND LONGITUDE COORDINATE POINTS DEFINING 21 MAJOR SECTIONS IN THE CHESAPEAKE BAY AND CHINCOTEAGUE BAY LATITUDE LONGITUDE LATITUDE LONGITUDE DEG MIN DEG MIN DEG MIN DEG MIN ...... SEC. 1. Susquehanna Flats SEC. 5. Central Western Shore SEC. 2. Upper Eastern Shore SEC. 6. Eastern Bay SEC. 3. Upper Western Shore SEC. 7. Choptank River SEC. 4. Chester River LATITUDE LONGITUDE LATITUDE LONGITUDE DEG MIN DEG MIN DEG MIN DEG MZN ...... SEC. 8. Patuxent River SEC. 11. Upper Potomac River SEC. 9. Middle Western Shore SEC. 12. Middle Eastern Shore SEC. 10. Lower Potomac River SEC. 13. Tangier-Smith Is1ands SEC. 14. Lower Eastern Shore LATITUDE LONGITUDE LATITUDE LONGITUDE DEG MIN DEG MIN DEG MIN DEG MIN ...... SEC. 15. Reedville SEC. 18. Mobjack Bay Complex 37 38.75 76 10.00 37 17.00 76 19.33 37 37.40 76 21.40 37 16.25 76 22.50 37 38.05 76 23.50 37 17.00 76 25.42 37 44.35 76 23.00 37 16.50 76 28.50 37 48.00 76 28.00 37 20.00 76 31.88 37 53.85 76 28.00 37 25.75 76 31.00 37 55.50 76 18.15 37 29.00 76 25.00 37 53.40 76 14.45 37 28.00 76 20.00 37 50.00 76 10.00 37 25.00 76 18.00 37 22.25 76 19.50 SEC. 16. Rappahannock River Complex 37 21.00 76 17.40 37 20.00 76 17.40 37 26.50 76 10.00 37 19.30 76 16.62 37 25.00 76 18.08 37 17.45 76 16.16 37 28.00 76 20.00 37 29.00 76 25.00 SEC. 19. York River 37 32.00 76 35.00 37 49.15 76 48.00 37 14.00 76 22.50 37 53.73 76 49.65 37 13.25 76 24.00 37 58.00 76 45.45 37 12.50 76 27.50 37 48.00 76 28.00 37 07.30 76 28.20 37 44.35 76 23.00 37 14.00 76 36.50 37 38.05 76 23.50 37 16.72 76 43.65 37 37.40 76 21.40 37 26.29 76 49.77 37 38.75 76 10.00 37 30.55 76 40.00 37 28.56 76 35.00 SEC. 17. New Point Comfort Region 37 20.00 76 31.88 37 16.50 76 28.50 37 17.45 76 16.16 37 17.00 76 25.42 37 19.45 76 16.62 37 16.25 76 22.50 37 20.00 76 17.40 37 17.00 76 19.33 37 21.00 76 17.40 37 14.00 76 19.33 37 22.25 76 19.50 37 25.00 76 18.00 37 26.50 76 10.00 37 20.00 76 10.00 LATITUDE LONGITUDE LATITUDE LONGITUDE DEG MIN DEG MIN DEG MIN DEG MIN ...... SEC. 20. Lower Western Shore Chincoteague Bay SEC. 21. James River APPENDIX C TOPOGRAPHIC QUADRANGLES SHOWING THE 1987 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 (14). THESE NUMBERS REPRESENT THE DENSITY CLASSIFICATION DISCUSSED IN THE TEXT AND FIG. 4, I.E., 1 = (10%; 2 = 10-40%; 3 = 40-70%; 4 = 70-100%. GROUND TRUTHING REPRE:SENTED BY SYMBOLS AND SPECIES CODES WHICH ARE EXPLAINED IN THE LEGEND ON EAGW MAP.) r SPECIES anera-LM (eelgrass) Hv Hydn1iovrmc~liaio(hydnlla) Zrn SURVEY STATIONS Rrn nw~o-?,~rn(w Ppl Pomjecon~erfoiiam(redhead-grass! Cd Ccr~~ophyliwndrmrrrun(coontailj C~llzensFwld Obsewal~on Ppc ~ouu~geronprrri~cw(sago pondweea] Ppu Pomgrronpwrllu (slender wndwesa) Zp 7a~8chrlbopolurtnr(horned pondweed) Ngu N~JUguadnluprmir (southern naladl A VlMS Fleld Survey N ~ajarrpp!na#aal Ngr NO,^ grociN&m(netad) t USGS &NVCC Survey Ec siodeo ramdrm" (mrnrnon elweal C Chorasp (murkgrass) Va vai1,~mna~ur~cor.z(wdd cderyl Nm ~~,~numr(s1ends1naiad) SCALE 1 24 000 Tn Trope mlom (Wats~cheEtnUtI u - (U8LI U Unknown specres mrnposltion 5 0 -l KlLDYllEl IJNITFL) \:A 1s IIAVHE Ut CI1PCI OUADHAN^ILt .,,, xe ~+ UrPA .TML-T OF T' ,* ,~,, ". .. .. ,.~.". H" ,,L ',,,,a.<~,,,II,',U ,,d Sl'a , SURVEY STAi IONS Rrn xq,,~am,nrxm(wldgaon grass) Hd ii~;~-i~i,,~~,,x,",la ,wr, r ssargrass) Ms *fin,,phiiiwn ip~isrurnltllrasian wafsrmtlfO1 PCI 1 ,r~rn,ui,>~.,s,iAi (c I ly pondweed) MD Charter Boat F~eldSurvey Ppf /' ~imopr~,~np~~fr~iz~~~iredh~lnqraes) Cd ,, , ,,, # ,,, .,,n,,~,,,,~!COJ,I!~III @ Cltzens Field Observalion 003 Ppc r jiumuarr,2npr:r2,mt isaqo prrdread, PO" i'ililr..ii..i,r. .,..,.I.. isii inder pndwerd* ,%,b., 8, ">~ Zp /C nnr8neiilii,<>iiiirr1c(homed wndweed) N~L% .I?~:,,*, qsrLs ,so. t5e , c,a#,$~l A VIMS ~~eldSuwry ,, , ~,<<,T"RS",SE" ,SU5 ,M. ,,,, , ss >E" 68 vm,, N \,qovp.m fnalad! hgl \ ,, L , ., !X ", n?,,,~?; uSGS aNY(:L Survey Ec I,~Z~~U Va r, ~i,r...,.-,,.,,~ (wta celery t4m1 \,8,., ,n,,,,,(we~der ra sd) SLAl E ' 24 000 ,urn, k 116 ,.~. . .: ' 6.. . \ , ,. *. --" .\\-+: . . , -. _ -- k.6. , fik ',- e.; US, \ _ - . ;i *Ground truth prgMby Stan Kdla '~, ..~- - ~. of Haiford CotWt@$yLoiisge I. i*' .,., . < . ;- .. ,,.,A : , ,,,s,t.m" ', . - -.).!.\ . pa. ,t : ' .,* ?,,*,, ~ - .- .~-., ..% ,~ % , , . . . . ,- - DATE FLOWN T:. T:. SPECIES 8 11-87 Zm r.urw .uul iwgrass~ Hv ~>wwm.li~iw~n.ldni~a~ SURVEY STATIONS Am ~qlu-iuuj*ageonprarsl Hd ~,rr&~~mu ixa!er staqrassi NORTH EAST, h4s V\~+ILUL-.JII ~Euraran*alemIkdl Pa P.ra?i.ru..it,-k~ tm"I wn*lsMl MD Charter Boat Fteld Survey MD "PI P.u.rr.*~rr*.Gxuc ,TBOTBOe~-l Gd i-<.a'*.uL.d,.mn ,mo"tm,l Clt~zsnsField Obsewatlon PPC P l-.rr.rP.- 1- F.3-1 ~pllPl-9irrwpullru IsJ4-r pmi 004 Zp I..-.%,.-;a ,&rm (tmww.5.e~ Ngu r4p'r*.wvwu ,unnem "mad1 A VlMS Fleld Survey ,~b- . ? ?Ri:?!,,. " N r-arp ,dl hgr \4p' ci*;llw lnaiadl USGS LNVCC Survey Ec I-*= ..duo lmmn C ibqi (misAg-1 Nrn DATE FLOWN + SPECIES 8-11-87 "L;%, Zm hriero (eslgrassi Hv HWIin wnzc~llo,a(hydnllaj SURVEY STATIONS Rm n~pio~umn(ndgeon grass) Hd ~e,rrmhrrodvbio (watet stargrass] EARLEVILLE, Ms ~~~~~~rr~~~~~om(Eura~~anwaterm~llot~~ Pn ~~mpcmncnr~w (cudy mndweedj MD Charter Boat F~eldSurvey MD Ppf Po-gemn~~~oliarw(redhsad-grass) Cd Crrarophyllm&mrsm Imon!aal) Cltlrens Fleld Observation Ppc Po-gnonpren- (sago wndweed) Ppu ~om~mnpmllur(sismer pondweedj 01 0 ,?>a Zp ~oon~ihrliavpoi~r~rl~(horned pondweed) NQU ~o,argwdnlwmns(southern naladj A VlMS Fleld Survey ~H~,Jw,v,5,u,,,% &"% ,E6' 8" "W ,Bk,Eb .*,. N No,= ~op(naiad] Ngr ~a,alorgronlf~m (nated) i USGS BNVCC Suwey Ec dlodra rn~drnr~(mrnmon elodea) C cbarp /murkgrass1 Va va~~unenamncono lwlld celery] Nm NS,~mmr (slemernaad) SCALE 1 24 WO in rrapo mrom (water cne~tnutl l MlLi U Unknown spas$ mmwsttlon -..- 5 0 -I KIIOULIE. r SPECIES Zm zorrrro W~M(eelgrass) Hv Hydriilo u~rnc~llora(hydnllaj SURVEY STATIONS Rrn ~wpul-t- (wdgeon or-1 Hd ~e,eroa,hr.~odd~n(wB1~rstar~rass) Ms Mynophyllunfp~eam(Eurastan watermdfo~l) Pcr Po(nmo8rznn cnrpw (cuny pondweedl MD Charter Boat Fteld Survey Ppf ~am~eronpvjvjl~~~~(rmhe~d-grass! Cd C~ra~op~ylluldrmrrrwn(coontall1 C11nens Flebd Obse~allon Ppc Pom8mnprcr&mrur(sago pondweed) Ppu Po~~~~onpu~llur(slerder prdweed) Zp ~~mihc~urpolurn~~(homed pondweed) Ngu ~a~olgdluprrun(uruthern naradj A VlMS Fleld Survey N N~JUspp (naiad) Ngr ~o,marocro~nwinaladj + USGS 8NVCC Survey Ec Eldro cedmnr (mmmon nIododod1 C ClWrorp (~YS~QIBSS~ Va vuri~rmrnoamrnco~ (w81d celety) Nm ~ajoiormmr(sender "sad) SCALE 1 24.000 Tn Trwo mronr (watet chestnut1 -..-.- % M,LE U Unknown specler compastt8on --- 110- I K1LWITIP Pou~(r~eronpm'o11orur(redhead-grass) Cd Crrat,phyllm dmmrwm Coontail) Cltlzens Ffeld Observat~on Poy~ogrlonpecnnorur(sago pondweed) Ppu Po~~~grronpwzllur(sleilder pondweedl ~u,~n~chrllropd(horned pondweed) Ngu Nojar fuodnluprnrir (southern nand) A VlMS Field Survey No,- sw (narad) Ngr Na,~gracrNmu(naladj + USGS BNVCC Survey Elodea cndenrir (mmmon elodea) C cham@ (murkgrass) I Vailtrncno mrzconn (mld celery) Nm Na,mmmr (lender na~adl SCALE 1 24 WO rrop WON (water chestnut) ------I UIII Unknown species camposltlon I DATE FLOWN SPECIES 8-11-87 '>\,, Zm zonrromnno (setgrass] Hv ~~dni~a~rn~ci~~oru (hydntla) SURVEY STATIONS Rm ~uppurnulismo(wldgwn grass) Hd Herrrumkru dubla (water stargrass1 BETTERTON, Ms M~r&~phylIwnrp~cnrvn(Eurss~an watermllfalij PC, ~~romngrroncnrpu (eully mndweea) MD Chafier Boat Field Survey MD Ppf Pormgrionprrjol~orur(rdhead~grass) Cd C~ro~hyilumdrmmrrunlmontall) Ctllzens Field Observatban Ppc Pom8eronpecamw (sago panmeed) Ppu ~omgnonm~lillw (sleM8r pondweed) 01 6 Zp Zanm~kllz~wlmt~$s (horned pondweed) Ngu Nv~org~lwmr~rlsouthern naladl A VlMS Fleld Survey N ~o,mw (naiad] Ngr Nmgmcill~mo (natadl i USGS &NVCC Survey Ec f1,ro co~dmra(mmmon etcdea) C Cholosp (muskgrass) Va vol/~~~enamr~co~(wid mlery) Nm ~qacmwr (sterner na8ad1 SCALE 1 24 000 Tn rrw MZ~(water cheslnut) l UiLi -4- U Unknown speoes compcet~on --. .... - >I0 I KIWYFTII DATE FLOWN ' : SPECIES 8-11-67 Zm Lorrcro WZM(eelgrass) Hv ~ydr,l!avemiillma (hydnlla) SURVEY STATIONS Rm nwm winma lwldgwn QIBSSI Hd ~arro~cb~a dub^ (wler stargrass) GALENA, MD Charter Boat Fleld Survey Ms Mynophyllmum~ccnnm(E~rasraa y.lmrmrmlfa~lt Pcr ~~uu~gcr~~cnrpor (cody pondwedj MD Ppf ~o-getanmrfollanrr(rweadg~-l Cd ~~~o~~~~n~&mm~~~~(~~ntaaIl C~t~zensFleld Obse~atlon 01 7 Ppc Po-grtonprcn- (sago pondwsd) Ppu ~~vv~ger~opvr~llw(:,lender pondweedl ."",""s.cL,c" 1'111 Zp Zam~~ckll~apolwnu(horned pondweed] Ngu ,valor guodnlrpmnr (s~hernnaaadl A VlMS Fceld Survey N Najor rpp (naladl Ngr ~aorgraeliizmn (nalarl) USGS BNVCC Survey Ec EMS ru~dmr~~immrnon elodeal C Churo ro (mu~kgrau Va vdlonano mrlco~iwrld mleryl Nm Nojor mwr (slender ralad) SCALE 1 24.000 Tn rrw ~ranc(water chestnu1 8 M,LE =.. ---I- U Unknown EpeCles mmpos~t~on 5 0 > K!C."FrErn UNITE2 STATES c DEPIRTMENT OF THE INTtRlOR GEOLOGICAL SUR?EY ,w.-, - .I-' DATE FLOWN SPECIES 9-25-87 '-'- Zrn liiliiiiro mvl~(eelgrass) Hv ~ydrcliov~mallnto (hyanlla) SURVEY STATIONS Rm nwpmetma (wageon grass) Hd nmronrhrrodzbm (water stargrass) SPARROWS MD Charter Boat Fteld Survey Ms ~ynophylim~pi~anun(Eurastan waterm,lto~ll Pcr PO~Y~D~~~mlpw (CUIIY pona~asa) POINT, MD Ppf Po~~r~onorrfoiluiwol(redhead-grars) Cd C~rarophyllundemrrrun (coontail) Clllzens Freld Observation 01 9 Ppc Po-E~~o~~~~,Iw~(sago pondweedl Ppu Powgrionpr~&Ilu(nender wnaweedl 8 "*" Zp 7an~1~h~il~opoliir~r~s(horned pondweed) Ngu ho~uguadaluprnrlr(~outhern naiad) A VlMS Field Survey ?MoTom" I I:: , , , , " , -ST,-- , ...... ;...... (; -r $' ?I-, .TI5 ..+O~ ..+O~ DATE FLOWN ~:g 2:-* SPECIES 8-11-87 ") ,a*:'+ 2rn 20~8rro-m (eelgrass) Hv Hydrlllo vrrr~rlioro(hydoll a) SURVEY STATIONS ' Rrn ~qpum~rr~o (wdgson grsu) tid Herrmmhrra dub. (waer :targrass) SWAN POINT, Ms Mynmhyllvnrprrorvm (EurasrannraIermrllo8l) PC1 Powperon cr~rpw(curly andweed) MD Chaner Boat Fleld Survey MD Ppf PoUIu18rronpr#oloeur*.a(iedhea&grasrJ Cd Crrurophyllundmurrm (c~onlaal] C~tlzensFleld Observation 020 Ppc Po-gnoronprcnmrur (sago pondweed) Ppu PO-8rronpwrllw (slercer pondweed) 1953 Zp Zonmckll~opulwnrr(horned pondweed) Ngu Nojo. guodnlupanrn (soulh~mnaiad) A VlMS Fleld Su~ey ,.62 , , -L sce8c%"85, N Nolo.w inasad! Ngr Nwo. gruc~lbmn(na~ad) i USGS BNVCC Survey Ec EIdeoro&mu immman eIMeaJ C Chnrosp (muskgrass! Va Volltili~na~unco~(mld mley) Nrn ~oiarmar (gender naad SCALE 124.000 Tn 7r.w rmonr(waferches1nut~ ----.- I MILE U Unknown spenss mmpmltlon Crrotuphyiiund.mrrum(cwnta>l) Ppf Powmogemnperfolacw (redh-ad grass1 Cd CI~IZBIISFleid Obsetvatlon =pc Poinm~~er~~prcorwiwIsago pondweedl Ppu Por~wgrionpv~ilac(8ender pondweedl Zp Zonn~ihriita~~iws?r(horned pondweed) Ngu h'a,m~&lupcuir isouihern na~adl A VlMS Fleid Survey Ngr NOJU sroiiiiinw (naiad) IV Najmsm (na~aal i USGS &NVCC Survey Ec Ehdra cude~u?ilImmmon elodea1 C ckm S,G (mustgrass) 'la voiiisnm. mncarul iwlld celery) Nrn hqoc m~r(lender na~m SCALE 1 24 000 rn lrmo mr- (water cherltufl > M8LE -< -< - J Unknown specles cornposlllon --- 5 0 .KILOMETER , .- C1, " I *e, " ,, "., L**a, n I I "" ". , ~. " i Hv Hydniio vrmi,rmro (hvanllaj SURVEY STATIONS LANGFORD Rrn nwpin mnn!uno (vldgaon grw) Hd ~cirr~mkroaub~o(water siargrar,) Ms Myrrophyllumarronun [Eurasian watermilfo8l) Pcr Po-grinncnpw [wny pondweed) MDChaner Boat F~eldSurvey CREEK, MD Pp1 Po-grrooprrfollorw(iedhead-grass) Cd crrurovh~1imamrr~m(coootao) Ctttzens Field Observation 026' PPC Pouuwgrronprcn~u(sago pondweed) Ppu Po-grronpurillw (slender pondweed) 5% 02, ."'a Zp Zonmc~ll~pulwr~(brnsd pondweed) Ngu ~qirugx&~wrnrrr(suthern narad) A VlMS F~eldSurvey ,a,* s,,L,,",<*",~s" ,*#< ~ajw*p (na~ad) Ngr Nojm grmtll~moinaladl "., , \" ,-,*,,"~ U S G S & N V C C Survey Ec Elodro ro~drurrlmmrnon elodea1 C chroa [rnuskg Ppf Po8m~rionperfoltom(redhead-grass] Cd ceroi, Zp ~onnrih~ll~~~~irutrir(horned pondurssd) Ngu lioi~~eudaivgrnrtr(5oUhern nalaaj A VlMS Field Survey .,OT~rnL\#S~,,e.,, ,>*.*bb ,,V..",, N NWJW ("atad) Ngr uuju rrutriirm (namd) i USGS &NVCC Survey Ec rlndcoro~d~drn~d(mmmon eldeal C ihnros (muskgrass) Va ~oiitrnrnomncam(W~I~ celery) Nm ~a)armnor(sleMerna~adi SCALE 1 24 000 Tn ~rooa.wram (water chestnut1 < M#LE - . ------.~------a.- U Unknown spec~escompos~tton P- 5 " , K,,""STGR . . ." I - - -- L.2.a , El ,,I j.,O mi$ - I,& , , 25 .*..~ .~~~...... ,..~~..~ . DnTZLow7i4""-, SPECIES 8-11-87 'A Zm 2orirrunwn~(eelgrasr) HV IRdrilLe verric~llaialhycdlla) SURVEY STATIONS ANNAPOLIS, Rrn fiuy~~rmnnmojw~dgwn grass) Hd Hereronihrro ddio Iwatlr stargrass) Ms hiyn~ph~ilulsp~ronun(Eurasian aaterm~lfo81) PCI Pomgrrun cnspu Icu1y pondweed) MD Charter Boat Field Survey MD Ppf FoUuMgrionprrfoltau (redhead grass) Cd c~rorophyiimdrmrsvn (montas~) Clt~zensFleld ODseNatloo 03 1 Ppc Po-gefonpemmru (sago pondweed) Ppu Pamge,onpu~liu(s1,tnde.pondweedl IVS7 v"o,~nc"~5ED 89 a Zp Z~mnickN!op~l~rnr(horned pondweedl Ngu Nqnc gdlupmn. (SO ithern naladl A VlMS Fleld Survey AHS ,.*,,> ww 3cw,ss v.,, N 2olm rpp lnalad) Ngr ~u,oraroiillim(nalad) USGS &NVCC Sumey Ec €lodes cowdrnns jmmmon elodea) C Chorory (murkgrass) Va vl~irrnrrinmricoM iwl~dce~eiyj Nm NO,^ mwr (slender na ad) SCALE 124.000 in i-wo matam (walerche~tn~tl ,MKS -,LA--. U Unknawnrpeoescompos~t~on 5 0 Ppf Pvvvvgrionperfoldarw iredheabgrassl Cd Crraruph*iium&m~m~m~ml~onlaalj Ppc PO-geronplcn- Isqo pondweed) Ppu ~~-~no~pwtllm(rlender pondweed) Zp Zamckllupdumu (horned pmweed) Ngu ~o,nr guadnlvprmrr (southern natadl Ngr ~opsruc~irmn (naiad) ~olarrnp ((naiad] USGS &NVCC Survey Ec ~iodrdco~drmu (mmmon elodeal Chnrow (murkgrass] Va Vall~rm~nmrnro~(mld celery1 Nm Nola MMI (slemer nalad] SCALE 1 24 000 Tn Trwnolonr(water chBStnu(1 - .-- -- ,MILE Unknown speues mmpostlon up- tlO > XIYMTIR '"a; '"a; OJEENSTOWN nUADRANCLE ., ,L 'e. > UNITED MATES DEPARTMENT OF THE INTERIOR M*R/, hN" ,,I+." % , GEOLOClCAL SURVEY 75 MINUTE SERIES iTOPOOPAPHCi ,+ ..R% ,,,,?S 7s S . , \% b t AIDI,K~L >,,i UNlThLi *TI b . NAk" ..I LJllANCI i '-. .,FPARTMtNl SF T tE 'Y'C? 'n 4.- , , %I. 8 k .,k" k, ,. 8 .,,3" .'-.~ ''> ' .I+, 2 I i; { ; ' ,3a2 "' I .a'/ I, 4 SUBMERGED AQUATIC VEGETATION - 1987 A" .".a ,.; I/ --'I $ '. 8 , , 1 $,T ,.": ,>" "8 .e 5 <--, L,,'\. , , 11, - I GT' '" PPf P~~~~~~n~<~ofneolw(~edh~ad-g~a~~jCd Crra~ophyIli&mr$m (CODnlffl> ClUrens Feld Obsetvatlorl Ppc Po-prronprmmrw (saw pondweedl Ppu ~~~v~#eronpirr,rlu(slender pndweedj Zp Zonmchriliopvlwrril (horned pondweed! Ngu Noia~g4qewu(southern nalad! A VlMS Fleid Survey N Noiorspp (naiad! Ngr wajuinr srai~llmm(naladi i USGS aNvCC Survey Ec Elodro ronoarwr (mmrnon elodea! C Chnro rn lmuskgrassl Va vo~~r~~nomrzcm (wld celery! Nm ~a,orrnmr(slender naladj SCALE I 24 WO Tn 7r.w miaw (waler cheslnM1 l Ulli - 0 - .- U Unknown species cornpastcon -. .-p 5 0 l XllMTEX SPECIES Zrn zorrrre mrim (eelerassi Hv ~ydrit~vcoaiin,a (hflnilal SURVEY STATIONS Rm RWP~mnirnu (wdgeon grass) Hd ~rrrrnnrkrodubm (wafer stargrass) Ms Myno~hyiimrp~corm (Eurasian wafsrm~lfolI) PCr pomgrron cn~pus(cu3y pondweed) MD Charter Boat Field Survey Ppf P~rm08rionnrrlr,iiaiwi(redhead-~rass) Cd crroroph~iiumdmm(coonta~l) Clt~zensField Obselvatlon Ppc ~owmogrronprrrimiu(sago pandweed) Ppu romgrfonpirriiiw(slender pondweed) Zp zan~chrii~o~alum~x(horned pondweed] Ngu hoiasgwdnlwannr (southern nalad) A VlMS Field Survey N NOW SDP (na~adi Ngr ~ajargrui~llimInasad) i USGS &NVCC Survey Ec ~beoiodmrrr (cammoo elwea) C Ctma gp (murkgrass) Va i'oii~mcnnamrnrur (~ldcslewl Nm ~oiarnu~r(slsder naaadj SCALE 1 24 000 Tn nwo mranr(wsteichennut~ t U8Lt --. --z U Unmnown rpeoes compos~fion $60 . .- DATE FLOWN I .: - SPECIES 9-25-87 *a ,,+a$ Zm d~srrramnm (eelgrass) Hv urmc~lloiu(nyd~llaj SURVEY STATIONS Rm nqpw-ranur lwldgsan grass) Hd ~!~reronrkrodub~~(wafc,r stargrasj MT. VERNON, Ms Myr~ophyllunspicorm(Eurasian watermilto8l) Pcr Po~grinncnrpurj~~ilypndwsedl MD Chaner Boat F~eldSurvey VA-MD Ppf Purv~grrrinperfonoivr!rsdnead-grass) Cd crrar~h(wontall) tlt~zensField Obsewatlorl Ppc PII~YM~~WKPIC~LM~W(S~O pondweed) Ppu ~~~mgrionpuillwjslt ndsr pndweed) 040 ,#ma Zp u~nnichrrnowlmnr~(horned pondweed) Ngu ~o,~~ua?oiupmris(socfhein naiad) A VlMS Fleld Survey ~"07~~E",~EO>ws, ~~T""U.,Py *DOE0 ,sB. N I'ojarspp (naiad) Ngr hoiucoru~iil~mjnaladi DM. ,,,,,~ w ,Lrn,ES bS,, i USGS &NVCC Survey EC ~,odcaionodmrr (wmrnon elodea) C 1 huro rp (muskgrass) Va vvllrrn~no~vriram (nld celery) Nm Nqa mwr {slender naaad) SCALE 1 24 000 Tn rrw ~zam(water chestnuti ------. . -- , M8CE U Unknown specres mrnposlt~on -7- 8 0 , *,LWF,FR *Ground truth prov~dedby Court Stevenson of Cnoi Po,nt Unlvers~tyof Maryland, Horn Polnt Laboratory .,,$-R , ~",, .m . 5,-t- ,I- DATEFLOWN - SPECIES 8-1 1-87 ':., ,, Zrn lorirro mnm (eelgrassi Hv ~ydrillaveri~allaio (hydnl a) SURVEY STATIONS TILGHMAN, " Rrn RV~W~M~L~-(wldg~oo gr-) Hd ~ereninikrodubiu (water rtargr-) MD Chaner Boat Fleld Survey Ms My~~~p~IIwnrpic~m(Eurasian watermiltoll1 Pcr Poxuwanoocnrprr (cmy pondweed) MD Ppf Poiomogrmprrfoilonr.l(redhead-grass) Cd Crr~rophyllmdemrr~m(,:oontallj Ppc POL~~~~O~PICTIMO~T(sag0 pondweed) Ppu Pulvw8rronprr~llrrlslenjer pondweed) 043 !W> P"OT0,M~PE~TC~,M,. Zp ~nn~rlulliapalurrrrr(horned pondweedl Ngu Nojar yudnluprnr~r(soutllern nalad) .M, 3.6 88, bF %FR~<,*,. N Nqol xpp (naad) Ngr ~uio.8ranllimn (na~ad) US G S a N V C C Survey Ec Eio,iro cnnadrmlr (mmmon elodea1 C Charow (muskgrass) Va VYI,L~.~OMV~COM(wld eeleryl Nrn ~u,arm~r(slender nasal) SCALE 1 24 000 Tn Tr~omram (water chestnut1 -- , M,LE U Unknown spcles compos#t#on 5 0 ,/ -: ,,,,,",~", ,, ,<,,,, , . .~ .r'-. , -- , - ' .. , ,CM"#'"CRSF" ,. . ,.. DATE. , " ~"~owNI-:+~ - $59 e.4 SPECIES 8-11-87 ,+% Zm Zmi~ruownrw(eelgrass! HY H~Btiiu>rrnniiuiu (hydnlla) SURVEY STATIONS Rrn Rw~iomaniimlwldgean grass) Hd ~(~r~~~~rhrrodui~~o(water stargrass! OXFORD. Ms ~yr,oph~!!um,pccotwr(Eurastarr watermtlloi~) PC, e~rm~pr,oa~nww(curly pondweed! MD Charter Boat Field Suwey Ppf Pozmg~ionprrfi,i,,iloiui (redhead grass) Cd rrror~~phyliwndrrn~rsw~/~oontalj Cliizens Field Observation Ppc ~oiumoarr,,~prismrur (sago ponaweedj Ppu P,,,omn,e,ompudiw (slender pondweed) Zp ionnirhe!!io~lm,ru (horned pondweed) Ngu 'iurad!wer~rIraufnern "asad) A VlMS Field Survey N r,, 3, (naiad) Ngr Wopr ~rui~iimmi(naiad) 1 4 USGS &NVCC Sbwey Ec Eiodeii rumimmu (common elodea) C (bra ,p (muskgrass) Va v~!I,mrno~ne~~om(~110celery) Nm YO,- mmr islender nasad) SCALE 1 24 000 Tn riapa w,um (water chelnuu U,LE -_lLr_ I_< -1:-=-=3 U Unknown species compostflon 5 0 ._. !)Nil tlJ STA :Eb / ,. i' TRIPPE QUADRANGLE a' '., $ SPECIES Zm hieramnnm ieelgrass) tiv H~&~ll~vemctll~z~(hydnlli) SURVEY STATIONS Rrn nwpw nunrim (vldgean grass) Hd a Ppf Pombrrooprrlororw(rsdhsad~grass) Cd L~re~~phyllmdrmerron(~oontallj Cltlzens Fleld Obsewallon Ppc Pumgalonprra~iw(sago pndweed) Ppu P,>-gnonpu8liw (slender pondweedl Zp Z~mncch~il~npoiurre~(horned pondweed, Ngu ~niar~vdniypemir[southern naiad) A VlMS Fiela Survey N Nolarxpp (naiad] Ngr ~n~ar~rooll~nw(naiad) i + USGS SNVCC Survey Ec Elodea codemir (mmmon elodea) C Charasp (muskgrass) Va vnll~rnrno~vrccaw (wild celery) Nm Naim mmr (slender nalaal SCALE 1 24 000 Tn 7rwwtom (water che5tnUil - - , U,L& U unknown rpsctss compospostton 5 0 '*Lo*ErEi Po-g.run~.rlolEoNI (redhsabgrass) Cd C~r~rophylimdmurnun(coonlall) Clftzens Fleld Observation 048 Pornmog~tonpera~~u(sago pondweed) Ppu ~o~v~gr~onglrr~iivl(SI~MBI poodweed) ,916 ~nmchrN~~lmn4r(homed pondwsed) Ngu Nu,- guodoiwratr (souh3in nalad) A VlMS Field Survey Nojar w (naiad) Ngr ~olorsroitrem (naiad) USGS aNVCC Survey ElodCv cd~odmu(mmmon elodea) C CMrasp ImuSkgrass) Volialnrno mnrncom (wld celery) Nm ~o,nr mr~r(slender nalaa) SCALE 1 24.000 Tropornrmm (~~ler~hes1nYli -- - l MlLE Unknown speaesmmpoat~on 9,- -1 m,m,se 1 SPECIES Zm zosvra mn~(eelgrass) HV Hydnlh vmzrillora (hydnlla) SURVEY STATIONS Rm Rqpiu mr~nmajwldg~on grass) Hd He~rro~ikradubm(water stargra6~) Ms MYYY~I~Y~~~SPLC~iEurasianwaterrnilto~lj Pcr Polomogrnooirzpiu (cu3y pondweedl MD Charter Boat Fleld Suwey Ppf Pomge,on~e.f.l~oiw(redhsad.grasrj Cd Cerurophyiiumd~mrmm(montaalj Cltfzens Freld Obsewatlon Ppc Po-8etonptcrimtu ($ago pndweea) Ppu ~olomopnonpwlll~(dender pondweed) Zp Zonnicklliopalwn~s(hotnea pondweea) Ngu Nolac guodolwrru~r(southern nalad) A VlMS Feld Survey N Ngac ~pp(na~ad) Ngr wnii~rucriim (oa~aa) 4 USGS BNVCC Survey Eo Eiodcm codmru (mrnmon elodea) C Chzror~(murhgrassj Va vnlbmrrm umrncum (wild cele~) Nrn N~~acmmrirlendernaladi SCALE 124,WO Tn 7rwmum (waer chestnuti l Ulll PP U Unknown specter composlflon 8 0 < K . , I -- * i DATEFLOWN CO*A SPECIES 8-21-87 \\, ~m Zanrrolora(Mnr) HV Whwddkm (hyddll~ SURVEY STATIONS Rm Rwb-~**lpqnpru) Hd ~atermhmdub&(war mug-) HUDSON, MD Charter Boat FleM Survey Ms MW&hwimm (Curdan wmenInoU1 Pa P-S#MC~PU rw* pomwd) MD- Ppf POWSIMP- (rrulubo-) Cd cr-huhu&menun ~rnonWl) Cnireru FINObewabon PPC Po.Ms,m"m-~ugo Po-) Ppu Po-~~m"pulll~ (.l.mor pmitWd) 05 1 1- ZP -hh-(hwdPo- Ngu N* t-wii (mmMW A VIMS FIM survey -"',.L-Y.IIID. N N4lorw (nd.d) Ngr N@S~IW(MW i USG.S (LNVCC Survey Ec &dm dmii(mnmon C Chv~~m) VU VdUI""b-~(md&*) Nm ~dmdw(sbn(*rt&dl SCALE I Z4.W Tn ~~(wwraurnu) t1L1- U Unknamlpqrmmw4nnn ,,I 3- UNl't O ST* rLS * OL.PCKTME~ DATE FLOWN *-. SPECIES a-3-87 i-% Zm zosrrm mon~(eelgrassi ~ydrilinvrnic~iloro(hydllM Hv SURVEY STATIONS CAMBRIDGE; -'> Rm Ruppw moriiimn (widgeon grass) Hd ~~irhlnrkrodd~o (water stargrass) / N MD Chaner Boat Fleld Survey Ms Myr~ophyliunrp~caun(Eurasian waterm~lto~l) Pcr ~o-ge,oo cnspm (wry pondweed) A MD Po~#eronperfolmau Cd Carnrophylimdrrmrrvn icoonlall) Ppf (redhead-grass) Ccrrzens Ffeld Observatton PPC Pomgranprmmlu(sago pondweedl Ppu Pov~ogeronpuiiiu(SlsMer pondweed) ZP Zonn~ckIr~apsJutruiIloInG-5 pondrmedl Ngu tia,,,ar guodaiupmr,~(~Mthern naad) A VlMS Field Survey N No)orrpp inatad1 Ngr Noiar groolirm inasad1 i USGS &NVCC Survey Ec ~iodracomwmr. (mmman elodea) C Chorusp (muskgrass) Va ~~iibsnrnaomrrlra~(wla celery) Nm Namm~r(s1ender nalsd) SCALE 1 24 000 Tn nopa wrom iwaterchestnutl l U,LE ----up U Unhnan spaes mmpw>t>on - -.- --- 5 a -< *,LOULTF'I DATE FLOWN ,:% SPECIES 9-25-87 ,. Zrn ro~rrr~mnrim(ee~rass) Hv HyZdln vrrncilloro (hqdnlla) SURVEY STATIONS Rm Rwp~amnnnmo (wldgeon grass) Hd ~crra~rhrrodubla (water stargrass) NANJEMOY, Ms Myrrophyllms(Euranan uatsrm#lloll! Pcr ~owmogrionmspu (curly pndweed) MD Charter Boat Field SuNey MD Ppf Polomogeionprrfol~aiw (redhead-grass) Cd Cerorophyllum&mrrsum (coonta~l) Cctlzens Field Obse~vafton roiomodr8unprcl&~cw(sago pndweed) ~~uvnngr#o~~w~llw(slender paneweed) 056 Ppc Ppu I?*. *,"-,,ME",5c" ,a,a Zp zunn~chall~opolwan(horned pandweed) Ngu Najnr guadnlqerurr (~outhsinnacad) A VlMS Fleld Survey ~ ,., N Na,nrrpp (na~ed) Ngr ~oiaisroi~ramo (naiad) t USGS aNVCC Survey Ec Elodea conudrmn (carnrnonelodea) C ~hnruq(muskgrass! Va ~all~rnrnoomrrcrom (wild celevl Nm Nwnr mwr (slender nalad) SCALE 1 24 000 Tn rrqm mnom cwaterchesmurl ,U,LE - -==- -- u U Unknown species compos8tlon 5 0 I1ILDU6,EP SPECIES zrn &sie?o mriw (eelgrass! Hv lfyd,~liovemr~ilo~u (nydnllaj SURVEY STATIONS Rrn nwpurwii~~l(wldsson grass) Hd Heierunihero dubio (weer stargrass) MATHIAS POINT, Ms ~yno~hyllumgrcom(Eura~an watermllfo~l) Pcr Po-prion mxpw (curiy pndweedj MD Charter Boat F~eldSurvey Ppf Po-grronprrfo~iarur(rmhead-grass) Cd ~:rwop~ilwn&mrm (wonfail) MD-VA Crr,zens Fteld Observallon Ppc P~-~rronpcerr- (raw pndwseal Ppu 1'"-gnonp*nllu l~IeMe(pndweedl 057 Zp amc~lltem111~ (horned ponbnbeedi Ngu ~ojug&lyp~rr (roulhern nalad) VlMS Fleld Survey AH. .,* 8 UP \rP,r\ N Nojmsp~Inalad) Ngr NO,= gmcial~jnaad) i USGS LNVCC Survey EC Eldra cowimsv (mmmoo elodea1 C ChGTusp (muskgra.~) Va Vall~snenaMV~~C~M (wild celery1 Nrn hejar mmr (slsrmer na~ad) SCALE 1 24 000 Tn Trope ~rom(wateichestnuf) ------l MILE U Unknownsr~nesmrnpas!tion --- 3 0 -t l,L,YlTlii ". , " DATE FLOWN, SPECIES 10-5-87 Zrn zoirero mon~(selgraw Hv H~dr~llo~,ernnrlaa (hydnlla) SURVEY STATIONS POPES CREEK, Rrn nwprmnniinw jw~dgeongrass] Hd Hersralhrmddlo (water stargrass) Ms ~vr~;nb~llumin~iorumIEuraslan uaterm~lto#l) PC~~~nuno~~r~~ rnrplir (c~nypondweed) i MD Chaner Baal Field Survey MD Ppf Pi~mmogetonprrfolcatyI (redhead grass] Cd < eraiophyllwn drrnerlcO0ntail/ Ppc ~o,omg~mnprrii~~ur(sago pondweed) PPU ~oimg.ronpwiiiw (slender pondweed) 058 ,--., Zp zonn~chrll~~p~lw~ru(hornpa ponaweerlj Ngu Noia~gundolwrmulroulhern naiad] pHc,7,,pbu,,sr, , ,,, ,*&T""WG ,"" -,,n*,, ,*" N hojai rpp lnalad) Ngr Nviac grorilllnv (nalad) ," ., . USGS &NVCC Survey Ec ~iorieo~~nodrnr~(common elodea) C Chnru rp (muskgrasq Va valliineim umrnrono I"8ld celery] Nrn Nojar w~r(sierdernaladi Tn rrapo mium (water chestnull U unknown species cornpos(l8on llltOMETLP Zm hste.o mt~i(eelgrars) HY Hydrliio vrrr~riilar~i(hydnlla SURVEY STATIONS MECHANICSVILLE, Rm Ruppiomoniirm (Widgeon grass) Hd nezeronrhero dublo (water slargrasnj I MD Chaner Boat Fleld Survey ' I Ms Mynophyllmrpi~oim(Eurawan waterm#lforl) PCr Po-grronrrispio (curly ~ondweedl A MD Polamogrlonprrfolio'w (redhead-pra55) Cd Leruiophilmdrarrsm (ccoolal) Cltlzens Fleld ObseNatlon Pomlogrmn yecr1~1w(rap0 pondweed) Ppu Poram~grionpuriiiwjr1endi.r pondweed) Zonn~chrliiopaiwms(horned pondweed) Ngu N~~arg~liqmnr(sou1heT nalad) A ViMS Feld Survey spp (naiad) hoiargmc~ihwo(naladl i NQr USGS &NVCC Suwey Elodm cmdemu (commondodsa) C chra $0 (muskgiarr) Vvilir~rnomnro~(wild celery) Nm Na,ormi~r(rlendernaiadJ SCALE l24.000 rropo ~coa(water chestnut) -- - . l mr Unknwn speaes composition - --- I0 I IImMETre SPECIES Zm ronrro mrm(eelgrass) HV ~ydniiavrntciiiolo (hydnlla) SURVEY STATIONS BROOMES ,8 Rm nwpin mnriam jw8dgeon 91a~5) Hd Heirron!krodubm (water stargrass) Ms Myr~~~h#imlpiiirm(Eura55an watermllo~l) Pcr ~oromopr,oncnem (cudy pondweedl MD Charter Boat Fleld Survey ISLAND, MD Ppf Pomgrmnprrfolmolu (redhead grass) Cd C~rorophyllunlmrrm(coontall) Cltlzens Fleld Observation 060 Ppc ~ormogrronprcnwru(sago pondweed) Ppu ~urrnger~~pu~~iw(slender pondweed) S"3.b "5 ,P 0-a Zp Lonn~chrll~a~~lwrns(horned pondweed) Ngu ~oiorg-lupmru (southern naiad) A VlMS Fleld Survey ,-*, -"",r,"F",ssc, ".~"~ , %, , N Nojm rpp (naiad) Ngr ~ujorgroiiiim~(naiad) .,. USGS &NVCC Survey Ec ~weor~odmru (common elodea) C Cbrarp (muskgrass) Va vadcmma ammiuw (wild celery] Nm Na~mmwr(slender naiad) SCALE 1 24.000 Tn Tmapa wren. (water chestnuti ---- , M,LE U Unknown rpcles composltlon - s 0 11(1-1,11 lJNlTED STATES COVE POINT QUADRANGLE ,,,ye LlARIWHD 16 MINUE SERIES (TOPOGRAPYIC) 6' J, J, SUBMERGED PIQUATIC VEGETATION - 1987 SPECIES Zrn &,rrrra mnw(eelgrasd Hv Hydnlio~rmc~llam(hydrllllaj Rrn Rup~iomnritimn jwlageon grass) Hd N~uninikmd&a (watri stargrass) " Ms Mvnophylimrp~coiwn(Euras~an waterm8lloliI Pcr ~om~eloocnspw (cury pondweed) MD Chaner Boat Fleld Survey MD Ppf Po-grronperfolratw (redheaa-grass) Cd Crretophyliwndem.nm (monta\l) Cltlzens Field Obsewatlon 1 Ppc Pc~iwwgrionprcrrwrw(sago pondweed) Ppu ~olwv.gr!onpvrllv(~Iendei pondweed) 06 ,987 Zp Zonackliiopolurrrii (horned pondweedl Ngu Naiorgudolweuis (southern naladl A VlMS Fleld Survey MA57- 8" WW4ER8ES "U N Nujor spp (naiad) Ngr Nqar grunii~m(naraq f + USGS &NVCC SuNey EC ~lalrocudera (common elodea) C Chnrarp (muskgrass) COVE POINT. MD ,,.*Y* ,* ",> <.-,a" Va vc~rnerlo~nrow(wlld cele'y) Nm Nawrmwrislender nal ad) SCALE 1 24 000 Tn rrw mom (waer chestnurl ----- l UlLi U Unknown rpeoesmmposttion -5 0 -l XILOUlTlil WK€O STAN TAYLORS ISLAND QUADRANGLE %.$+' DEPAR- OF THE INlEltm MARYLAND . CUYOGUXL SUIVEY 75 MINUTE SERIES ORTHOPHOTOMAP (TOPOGRAPHIC\ .I-.( .I-.( --v S~MERG VEGETA ' - '3 \ i<\.'I r . ?. \ , , " _\.\ \,- \\ C 4 4' d' d' . ~ \ -\.. \~ \. . \\ . - \\ \\ \~ \\ 2. \ - ~- --- - _ 1111 1, SPECIES mmm.-l-) Hv ~yin~w~(hyanua) SURVEY STATIONS Rm- I- IISSl Hd Heur&radubu (wner sUIgrss1 TAYLORS MD Charter Boat F~eldSurvey ~-IEuIM~.~I Pa ~-~w.mpw (wny panmeed) ISLAND, MD P-~"olprforuul-l Cd cer~&-~un(momsll) Cttlzens Field Observat~on 062 m-wlmpnru1.qo- qw P,mgmpu'Ihr (*VpOnhudl 19112 -bp&m, 10 $m~.d p&wew Ngu NW r-~d~mu(lourhorn nmadl A VlMS Fleld Survey w'. 3x4 8" NE Se",ES - NmwlIy.6) Ngr NW rr,mlr- (nudl f USGS LLNVCC Survey €bk&~~(uloamnQO.) C Char (mus@rml Vab"marmcol. IdIdUlW) Nm N~W.~M(am& mad) SCALE 1 24.W r- (rrr-1 ,mG - w. -- - - -qurrmw--l ID I IIIMrn UNITED STATES %'*. GOLDEN HILL QUADRANGLE +*:,, +*:,, DEPARTMENT OF THE INTERIOR WRIUND WIICHLLTLR CO 1 ~ , GEOLOGICAL SURVEY I I MlkUTZ SERIES ORT-TOLUP ITOIOGRIMIC) DATE FLOWN ' SPECIES 10-587 %*. Zm HV lhdr~liuvrrirc~llnia(hydnlla) SURVEY STATlONS Rm nwpu mor tlmo (*eon grass) Hd Hlwrunrkro dubto (water rtar~:asl GOLDEN HILL, Ms hfynophyllmrprcorm (Euras~anwateimtllolli Pcr ~~o-g(,o~rnspur (curly poodwl+edl MD Charter Boat Fleld Survey MD Ppf P0m8e,oap~0anrw(redhsad-~rass) Cd ~~rorophyiimdrmrrrvm(montai Cltlrens Field Obsewatmn Ppc Pom8eanprcrrnanrr (%ago pondweedl Ppu ~orn~qrr~~~us~ilur(nerder pon iweea] 063 IU, ZP Za~ichril8rpnlwrrr (horned pondweed] Ngu Nojorg-i~nnr (southern nald) A VlMS Fleld Suwey c.,.,~,w-,w N Na~nrspp (lalad) Ngr Najm pructll~mn("amad) f USGS LNVCC Su~ey EC Elodea co~dmrrr(common elpeal C Lhoru~(muSXgraES1 Va voll~rnrnomxruno wid celeb) Nrn h'oior mMr (slender naiaq SCALE 1 24 WO Tn 'rrupa MIMI (water chestnut1 ---, ---, 1 mLE U Unknownrpeoescompasit~on l Kl-P Ppl Poromogrionprr/olram(redhead-QrKrl Cd ~eroiaphyiiumdemrrrum(coontall) Cltlzens Fleld Obsewatlon Ppc Purmg~iooproi~lw(sa90 pondweed] Ppu Pom~grt~n~~~~li~~(slender pndweed] PWO,"RE",SEO >s,n Zp zansihrii~opuiwnr(horned pondweed] Ngu Now gudolupenns (roulhern nalad) A VlMS Fleld Suwey P.QTO,NSPECTEO ,a*> "W. ,,a, s* S~##&b,a,. N Nqllrrpp ("='ad) Ngr Nwa~mil~mjnaiad) USGS SNVCC Suwey Ec Flodru codrmrr l~ommanelodea) C chnrorp (murk~rass] Va ~'alltmmoanunco~((wild celery] Nm NWW mmr (slender naradi SCALE l 24 000 Tn rrma -tom (water chestnutl U Unknown spoes cornpos8t~on I e Ppf ,70i-8rionprrlbiim~u(reohsad-gras+j Cd Ce?mi~phyil~milcmri~*in(~oontall) Clllzens Field Obsewallon Ppc ~oz~p~i~nnrc~muirul~agopndweed) Ppu Poromoga8onii*rcllu Is endel pndweedj Zp "onnichrll~opalwrrir(horned wndwsed) Ngu Nojorgundoluprnrir (sr uthern naladj A VlMS Fleld Survey N .vuiarin~(na#aai Ngr Nuius procill!nw Inatad1 1 USGS KNVCC Survey Ec ;lodea ~~,drnr~s(common elodea) C Chnrorp lmuskgiass) Va i'ol1irnrriomnrom (* ' " DATE FLOWN SPECIES 10-5-87 Zm zornra mn~(eelgrass) Hv ll~dnliovm,ollara (hydnlla) * ~m Kupplamnlm (w~agsongrass) tid ~ Va I'olinneno mrii.~(wlld celery) Nrn NUIIIS minor (slendi i naladj SCALE 1 24 000 in rrmo wivm (water cheslnuli > U8Lk --- 5 =- _-r- 0 . . -- U Unknown species compas,t>on P-7 - 5 0 I n810U/I/R P* DATE FLOWN' , ,*P'" SPECIES 10.5-lj7 %>* Zm ~r~ramonm(ee1grassi HV Hv&dlo vmcilloro (hydnllal i; SURVEY STATIONS flm RW~OW~~~~~(we%dgeon gr-1 Hd Hercrontkmdd,~(water sttrgrars) SOLOMONS MD Charter Boat Fteld Survey Ms Myrtophylivmmicarwn (Euiasmn watermiifolI) PC, Yo-#noncnspw (cuny pondweedl W ISLAND, MD Pomge,onprrfeliarvr {redhead 0ra4sj Cd Cero,ophyllumdrmrrwnm (caonta~l) Ppf Cltlzens Fleld Observation Po-gnvnprrnmzw ($ago pondweed) Ppu Po)~~ngz,onpu~llvr(slender pondweed) 07 1 Ppc IPS7 Noiorgvadolvprnrir (So~lhern Reld Zp zonnichrllinpolvrsii (horned pndweed) Ngu na8a.d) A VlMS Survey w 3- * SW.Frn5 N Nula, rpp Inelad) Ngr Neal groc?llrmu (naiad) t + USGS 8NVCC Survey SOLOMONS ISLAND MD EC El~d~ocnmd~m~(cornmonelodea) C Chnror,n (murkgrass) %. -\.,- mw "% Va Vdll~snenowrtcom (wild celenl Nm No,- mmr (slerder nalad) SCALE i 24 0W Tn irapa mrow (water chestnu) l Ulll U Unknown speaer mrnposltion . " **a UNITED STATES DEPARTMENT OF THE INTERIOR BARREN ISLAND QUADRANGLL "*"",AND GEOLOGICAL SURVEY 15 MlNUTL SERIES URTHOPWOTOMAP ITOPDGRAPHICI I ', '/ "."p I " [i. ! ', -,>I -,>I - \, ! .8 ', lMxn !. \ %. FFFT ',', -! ,' \ \, ,. \ \ I ' ,8 ,' \ ', ., \, --- \ =",'*> . -u,*"am,, >,m m , , ,... .. >"I" Ib12YIP-l- see, 3, 20 ,w"- ,.: DAFFLOWNh *"!"' SPECIES 10-5-87 '$tt-. Zm astero mnm ieelgrass) HY ~ydrilioicnraiiaru ( iydnllal SURVEY STATIONS BARREN Rm Rupplomriiim. (sldgeon grass) Hd ii~r~r~~ihrrodub~u(iiater stargrarrl MD Chaner Boat Fleld SuNey Ms Mynuphyllvnrp~corvn(turaztan wlermilfo#l) Pcr ~oramnpo~~nspurcvny panhveedl ISLAND, MD Ppl Poramogeronp~rfolio~ur~rsdheadgrass] Cd (aruiophyllumdrm? vn (c00nta8ll Cll~zensFleld Obsewatlon 072 Ppc Pnuu~aeionprra~lus(sag0pondweed) Ppu ~ummoyrronpwillui(slender paodweea) m7- OMm. Zp Zamiihrlli~pul~inis[horned pndweed) Ngu ~uiargvndnlupr~ir southern nagad) A VlMS Field Survey 13s4 5,'' w Va vurlirnrno MV~CC~M (wild celery] Nm lia~rnm~r (slender nalad) SCALE 1 24 000 Tn ~inpoMIOW (waler~hestn~~l U Unknown npeoes cornpos,t,on Ppt Potmgaconpsnal~atyI(redhead grss) Cd C~ron~~hjll&m&mlnm ~COon1aIII C~lirensF~eld Observation Ppc Pammogrronprmnutus (sago pondweed) Ppu Po,morrrrnpmii~r~slenderpondweuesdl Zp Znnnrrhrlliapalwtr~s[horned pandweed) Ngu w~aca-iwmiir (Ioulhern nalad] A VlMS Fleld Survey N ~ojarr~pinasad) Ngr ~~~aar~~~~~mlna8dl 4 USGS &NVCC Survey Ec tIodeoconodrmu(mmmon eladea] C ihiiia rp lrnuSkgra~L1 Va vollirnmo mrrcono (wlld celery) Nm ~qiucmimi(slender lalad) SCALE 1 24 000 Tn rre.m wtam jwater~hesttull 3 M8LE v- -- - A U unknown spec8sr composrtlon 950 -1 IlOUElEi =. =. -*. ,~, $I.*. UNITED STATES i. DEPARTMENT OF TME INTERIOR RCCLANNMIUILhND POINT IIOW OUADRAPICLEHFSTFU LO h OEOLOGICAL SURVEY ORTMOPHOTOMAP(TDFUCRA~~HI( ,,",, .- -3 M11IUTE iEPlES 1210 ,"OW&.. .F# (1 *C. , 7. 7. 1 SUBMERGED AQUAT;~VEGETATION -. ,. ', \ ,. ..> \ , - \.\, ' '\ \, >.I 77 \ \ , COW, \ '\ ,- ; i ,, , ,I ">>, , ,- \ 'q \' 3 ','\ * ~~. , I, 8' ', ' \ so ~. , fd ~ ', , s ,2. \,\ \,\ ~.- ~ - '~ ~~ - *' , \' ', " '~> I \ \ \>\ '\, p "' \\'% ~ a, m <, , ./a 1 C 1. 6 ,,' \ \' 8-7 *>, I> V1 - *t I 'i 12 3- \ .., ,.-> .. i \-.. 6 I '\ ,: - - % ~ "a, > a \ S >> \ *\ , . * ro, , 7 I , \ , 1) , I, I \ I : \ 3. .a. a ~ ~ I ' \ I -. \ .- 6 ~*\ 1 '+ *. >, , .'~-- -? i !30 /" "9' ~i i,! 6 ~ ~- .A .. ,. 6s "<,iil :: p 6 8 2. I ,, -5 3. ) F+ DATE FLOWN .3 SPECIES 10-5-87 . ,:-, , Zm Zorrera monw (eelgrass/ Hv nydrlll~YIFIIC~II~~Y (hs dnllal SURVEY STATIONS '* .' Rm nypplamonitmo iw~dgeongrass) Hd ~ereranzhcrodubiu Iw.ler stargrass1 RICHLAND MD Charter Boat F~eldSurvey Ms My~~hyllunxpicuun(Eurauan ~atecmm1to~l~ Pcr ~oromogmnmrpu (rudy pondweedl POINT, MD Ppf Pouunogrronprrforw(rsdhead-grass) Cd Crruiuphyllwn drmrrrm (coonta~l] Cit~zensField Obsewat~on PPC Povu~~rronprrrrmzw(sago pondweed) Ppu ~~,amngrr~~puso~ur1;lender pondweed) 082 1 ,,, Zp ro~ichrllin~olwrr~~(horned pondweed) Ngu ~qorndlrrmir(southern naiad) A VlMS Field Survey ~-<*~, ~- ..>,E% ">, N ~ojolspy (naiad1 Ngr ~oioraronli~nw (mass1 i USGS aNVCC Survey Ec ~lodeocu~dmmrr (common ~IMMMI C ( MTY sp (musk~rass~ Va vuli~ornu-ncnm (wld celery) Nm ~oiornurnr(gender r~alad) SCALE I 24 000 Tn rr4pu miom (wasrchestnull 1 U#LE d ------U Unknown spc#enmmposil#on --- >so I XILoUirrP . . Zrn zosirra mnrtm (eelgrass) Hv Hydrilio v~rrri,llaro(hydnila) SURVEY STATIONS Rm nwpumor~,>mo(w4dgeon grass) Hd Heneronihrru dub80 (water stargrass) BLOODSWORTH ' I Ms ~~~~~ph~liurn~p~~~iun(Euraoan watermlllo~l) Pcr ~~ianwg~a~cnspw (cudy pondweed! A MD Charter Boat Field Survey ISLAND, MD Ppf ro~~m~r~head~grass~Cd Crm~~~h~llumd~rnrrrun(~~(intalll Clt~zensFleld Observation Ppc ~,tmsrronprromzw [sago pondweed! Ppu Poivmvgrroopwiiiw (slender ponawsed! 083 ,9,> Zp Z#nnriheI!iopir!w!r~r (homed pondweed) Ngu holm auodnlupmio (southern nalad) A VIMS Fteld Survey I .M ..L, .. rm,. ~ Y,ar grocoiim (naiad) i N ~ojarspp(nasaa) Ngr USGS &NVCC Survey Ec kbdra Ms Myna~hyllmr~icolum(Eurasian wmermdfo8l) Pcr POYYMB~ZO~cn‘pU( (CYIIY pndwesd) MD Chader Boat Fceld Survey Ppf ~otm~geronprCltom(redhead.grass) Cd Cerorophyllmdmer~m(coonla~l) C~rlzensFteld Obsewatlon Ppc ~~t~~~ronp~rrr~lu(sago pondweed) Ppu ~~l~wg~~~npu(~lluIdeMer pndw~ea) Zp hnn~~hrieoporutrs(horned pondweed) Ngu No)aguodnlwma (ylulhsrn nalaal A VlMS Fleld Survey N Nmwp (nrad) Ngr ~qinrgranflem (need) i USGS BNVCC Survey Ec idea ra~drrnu(mmmon d&s) C Choroo (mushgrass) Va vo~~snrrcoomrrtcvm (wild celery) Nrn ~olmmmr (sle~ernasaa) SCALE 1 24 000 Tn 77- (water chestnut) -..-.-.-- ,MU U Unknown epecles cornpawt$on "IC' D . - --, -09 W9' k. /' '\ '\ , , <'? .> .> =>-- .-.'\. .._ , . '\ - - .hi#.,.. \<.- , ,d . L~ \-.- -* ~'\ ,, \ \ I -_ ,8~uc.. . \ J-\ . r :\ L~.. . 69 .I0 ramaiiil uo, ,"e"msw,'6, 6 .irr ,.j~ ' ...... -.-"-...... ;...... c&*",@ DATE FLOWN p, SPECIES 8 8 10-5-87 %c% Zm Z~sreromnnm(eelgrass) Hv Hvdiillo vemallaio hydnlla) SURVEY STATIONS Rrn ~w~mnumsmo(wldgeon grass) Hd Haeronrhrrodubio water stargrasrl ST. GEORGE Ms ~yr~ophyiiwnsp~co~vn(Eurasian waterm~lforl) Per ~o-prr~ncn~prn puny pondweed) MDChaner Boat FleldSurvey ISLAND, MD-VA Ppf ~oro~~g~zonprrl~nor~(redhead grass) Cd crroiophyilwndrme sum (coonta~l) Citizens Fleld Observation Ppc Po-,e,onpect8m,u (sago pondweed) Ppu Poramo~rianpunl1u(derider pondweed] 089 19111 Zp 7~nn!~he11~~pelurr8~(horned pondweed) NQU ~ojarg~luymnr(southern naladl A VlMS Fleld Survey m" s7c' 88, 5W4ER,ES m N Nojarrpp (nand) Ngr N4iorrroiiiitnm (naad) U S G S & N V C C Survey ST GEORGE ISLAND. MD -VA 51 c,nmw -% Ec ~lodroco~drnris (common elodea) C (hare rp (rnurkgra,sl "."", Va vaiiirnmaomrnram (wid celeiy) Nm h'a,arminni(slender naaad) SCALE 1 24 000 Tn rrapo wrom (water che~ttyf) ,MLE U Unknown species compos#t~on --6 * > X,LOMtTER Va Vollrrnrna mrtcm(nld celery) SCALE 1 24 WO Tn rrq MI^ (water cheslnm) U Unknown spec~ssmmposnlon SPECIES Zm ieslgras) nydrtllo umcrilota (hydnUa) zor~eramonno Hv SURVEY STATIONS flm Rwpramnoru~(wldgmn grass) Hd ~errronilvrodubla (wafer slargrass) Ms Myrmphyllwnrp~ruru,(Eurasian waterm~llail) Pcr Po-gnon cnww (cu3y pondweedl MD Charter Boat Fleld Survey Ppl ~omgeronpc~~It~~(redhe~g~a5si Cd Crrot~phyiiidcmrrri(monfadl Cltlzens Fteld Observatmn Ppc Pouu~grmnprcnmw(sago pndvsedl Ppu Pomgrronpw~llw(slender pondweedl Zp ronnich.llropaluszrl~ (horoed pondweed] Ngu NOJ~gvadalvgrnrlr (roulhern nalad) A VlMS Fleld Survey N ~ujarJDP (naiad) Ngr ~ojmprocdl~w (netad) f + USGS BNVCC Survey Ec Eldea ra~drnru(common elodea) C Chnrorp (muskorass) Va voeunrna mnrono lwlld celevl Nm Nalarrmmr (slender oaladl SCALE 1 24 WO To rrapo wmnr (water chesfnyti l WLE A ---, U Unknown spass comwstlon $50 t ULCUIIEI ib * ~7. " UNITED STATES :', DEPARTMENT OF THE INTERIOR 8; . GEOLOGICAL SURVEY DATE FLOWN SPECIES 6-6-87 '%:;, Zm zossromM (eelgrass) HY Hydrtlin vrncrilloza jhycnlla) SURVEY STATIONS EWELL, Fim ~wpul~insmo(wldgwn grass1 Hd Hrieranrhrrodubia (watsrstargrasrj MDChaner Boat Fleld Survey Ms M~ndphrllms#~mrm(Eurasian watermlfol) PC~ ggggPw (cud" pondweed) MD-VA Ppf Pornmo~eronprrf,lcolu((redheadgrass) Cd Crmruphyllum dzmrsuni jcoontallj Citliene Field Observation Ppc rorom.gaonprcnmcur (saga pondweedl Ppu Pom~~etonpw~iiw(slmder powweed) Zp Zomchlllropalwn~r(horned pondweed) Ngu Nojosgudoiupemir (ro~thernnaiad) A VlMS Fleld Survey N #o,"ojaripp (nalad) Ngr Noiargrorill~minalad) + USGS BNVCC Suwey EC Elodro co~drnra(cammoo elodea) C chnrorp (muskgrass) Va bolltsnma mnrann jwlld celev) Nm NO)* mmr(slender nasad) SCALE 1 24 000 Tn rropo wrnm (water chestnut1 3 MALE =- --. -13 U Unknown rpscles camposeon -.- - 5 0 , K,Lm"S,ER 4 '. UNITED STATES GREAT FOX iSihNI1 OUADHANCI E . 3tt'AHrMENT OF THE INTERIOR MAUYLANII VVGNi4 7 b MlNUTt hi",, IT"I',>L,"*I~H' +" GEOLOGICAL SURVEY ~..,, ,..~, r,i SUBMERGED AQUATIC VEGETATION - ,1 .,L ,,, ..wG,cm-," . ,T>."" '- ,, , ,lo ,,, 1. I, . ".. , .IT DATE FLOWN SPECIES- -. 1 6-6-87 Zm zorrrra mnnm (selgrasq Hv Hydnllo venirillolo (hydnlla) SURVEY STATIONS Rrn nqpmm,,,,rm jwogeon grdss) Hd Hlrrr~~tiuradda (water stargrass) GREAT FOX MD Boat Ms Myno~hyllunrpiro~um(Eurasian watermilfo~l) Pcr potornogoon rnrpw (curiy pondweedl Charter Field Surrey ISLAND, MD-VA Ppf ~oiomo~rronprrfoimr~[redhead-grass) Cd c~raiophy~mdtmrrsvn(coontart] CrtfzensF~eldObsewatlon 100 ?PC Pot-grron nrmnniw (raga pondweed) Ppu Patomogrtonplrr~llw (slender pondweed) 19-s Zp Zonfliihcllrop11iii1111(hornad pondwed] Ngu Nq~p&Iww lzouth~~nnaaad) A VlMS Fleld Survey ~*~,",,.% a, N NO," spp (nalao) Ngr NO,^ (ran~~imn(nalad) t IISGS &NVCC Surrey Ec ~lohocoderno (mmmon elodea) C Chnros~(murkgrass) Va Vollisorna mnca~(w$ld cslev) Nm Nninr m~r(slender"atad) SCALE 124.000 1 ultl Tn rrap MI- (water chestnull U Unknown speaer compont~on C .-P % " ,.,,--.c0 -~---, ~ 50 .?, .II ll30 ,,? >:-;;, ;,, :.,. .":,&;.. ". DATE FLOWic: a" J,prl. SPECIES fats 6-6-87 -. * - Zrn zos,~nramnnu (eeigrar,s\ Hv ~ydrtiiavrniriilaro (h,dnllal SURVEY STATIONS CRISFIELD, Rm nmornr8t#ra(widgeon ~r-51 Hd ~pr~~~m*~*~*~du*~a(w*~l88sffrgras5) Ms ~rna~hyllumr~irorun IEuraman waterm!lloil) PCr ~oimgnoncrzrpur (i uny pondwesdl MD Chaner Boat Field Survey M D-VA Ppf Poimoseronprrfoiiorx~(igdhesd-grass) Cd cerv~~h~i~~drmrsm (coontall) C~r~zensF~eld Observarlon 101 PPC Poim~rronprrrr~rurlrago panawesdl Ppu Po~g~,onpwilIurislender pandweed) 1 S8 Ngu Nolmguodoluprnri~j!outhern naad) VlMS Fleld Survey AM5 8" "E SERSES "a,, ~qlmspp (naiad) Ngr ~aim~ro~~llcmlnalaii USGS &NVCC Survey Ec Ebdroio~drerc(common elodea) C Chnrarp irnuskprasil Va VdNirnsno artcoma (wild celevl Nrn Nu!mm~rirlender lalad) SCALE 1 24 000 Tn rruw MIOW (water ~hestnntl l UlLl + - &--- -. . U Unknown species compos~t~on SPECIES Zm zoinro mnn~(eelgrasri Hv Hydniiavrritolioro(hydnllaj SURVEY STATIONS Rm .Q~~~~~,,~~(wason Hd Hc~rro~krodubu(wat~r~laa~~ass) MS Myno~hj!!mlotcotum(Eurasan wateimilloll) Pcr ~ommagnanrrispur (cudy pondweed) MD Charter Boat Fteld Survey Ppf ~ornmo~eronprrfoiiorur(redhead-grass) Cd cerorophyi~umhmmum(coorna\l/ Crllzens FleM Obsemason PPC Po-geconprciim~u (sago pondweed) Ppu Por-grtonpurtilw (riemer pondweed) Zp ~ON,helimp~lw~r~r (horned pondweed) Ngu Nnjargduprnro (southern naiad) A VlMS Fleld Survey N ~ojuipp(nalad) Ngr ~oiargraallrmo (noad) i USGS BNVCC Survey Ec siodro iodmru (common elodea) C churorp (muskgrs5s) Va vall~nnrnnonunrom (wlld celevi Nm N~W [slsMar nalad) SCALE i 24 000 Tn rropn nnionr (water chestnut) v wr - .P- U Unknown species compor8tlon ---- 6 0 5 X,LOUI.CII UNITED STATES TANGIER ISLANO OUkORANCLE ,~, COMMONWEALTH OF VlHClNlA .".. YiRCNk-ACCOMACK LO -$; DEPARTMENT OF THE lNTERlOA DIVISION OF MINERAL RESOURCES 75 MiNUTE SERIES 1TOPOCYAPHlO , OEOLO01CAL SURVEY JAMES L CkLYER STATF CFnLOClFT ~W . ,w,s,,c~,,, ",,., ,"<" , , ,,, I22 _ SUBMERGED AQUATIC VEGETATION - 1987 . , , ,,-* ,> , , . . - .( X.lD,'llil" ,,I ,> 5, . . . ,. , 3-do0 , 2, 0, ./I, .I6 ~" ..-, DATE FLOWN t SPECIES 6-6-67;, Zm zoriem mriw [eelgrass) HY HI~,EI!~i~roili~oiv 8 hydnlla) SURVEY STATIONS TANGIER ISLAND, '~' Rm ~uppiomilnitmn (w8dgeon grass) Hd ~eraru~rhrroduhiaiwater stargrass) MD Charter Boat Fleid Survey Ms Mynophyliunsp~coia[Eurallan walermllloll! Pcr Poiomgeton crisp*, [cudy pondweed! V A Ppf Porumo~rionperfol~oiwiredhsad.grassl Cd Clroioph~liundrmrrun icoonlal) C8tlzens Fleld Observallon 107 Ppc ~,amo~x~~npecn-[sago pondweedj Ppu Po~~rn~fl~n~~ll~/sleMer pondweed) ,968 Zp Zo~ichll~opoiulnr(horned pondweed) Ngu Nqor ~udaiupmsir(soulharn naladl A VlMS Field Survey ws5s3q #, bEpmLs #. N ,Vqurspp (nalad! Ngr Nuiur arunliima (na ad) i + USGS aNVCC Survey Ec Eiodro conndrmis (mmmoo Blodeaj C Ciwni~nlrnuskgrair) Va Vailirnrr~aom~r~co~iwlld celev) Nm ~o,orm~mrislender naiad) SCALE 1 24 000 Tn rropo miom (water chertnu0 --L---- l UlLi U Unknown specler campas~t~on --- 5 0 -I K~LOUSTEP CHESCONESSEX OllADRhNGLC +, IlhirFO STATES COMMONWE<H OF VIRGINIA ",illIN11 iI , . SUBMERGED AQUATIC VEGETATION - 1987 SPECIES 6-6-87 Lrn zosrero mr~u(eelgrassi HV Hydrriio ven~ailoro(hydnlla) SURVEY STATIONS Rm Ruppiomnrti~m(wldgeon grass) Hd He,rronrhera dublo (waleistan~rarr) CHESCONESSEX, Ms ~ynophyllwnrpraium (Eurasian waterm~lio~l) Pcr Pocanwg.ion cnrnur (cwpondweed) MD Charter Boat Fleld Survey VA Ppf Potmqe,on~erfoltal~rc(redhead-grass) Cd Ccr~,@~llidemrsm Ico~ntaal) C~szensField Obsewatlon 108 Ppc Poivmogrinnprcriuru (sago pondweedl Ppu Pol~w~r#onpwcIlu(slender pndweed) >9%8 Zp Zunnirhrii,opoiurrnr (hornedpnbwem) Ngu Najvrgvdnlvgrnrrr (southern naladj A VlMS Fleld Survey .q% # , ~, ,> < ",. N Nujusrpp (naiad) Ngr N~~.wgruell~mn(naiad) USGS BNVCC Survey Ec Fidearoudrdv icommon elodea) C Chororp lmurkgrassi Va laii,~ncr~omrrrrow(ald celery) Nm No/armm.or(rrendernaaad) SCALE 124.000 Tn rrupv u8am (water cherlnutl U Unknown spectes ~ompor~t~on - .-- 5 0 -I KIUIUCTBP "d'inOllX l ----- osc c--- c--- ~-.- - ,7,*, - --- 000 nz 1 nv3s (p,teu iapualr) iimrw mlo~ ill^ isse,bxsnru) di olmij 3 ha~nS33ANB SOSn 4 ipe>eu)r-lrilmin miny~,~ AnNnS Plaij SWIA V ipeieu u~eqnos) rimrhjm~lmfwn6~ (paampuod)apt alrJmjjimduira%ouaiud ndd uo~iemasqoplalj suaz1113 0 I (91UOD3 WI~~wdPWlllYd#lOldJp3 COMMONWEALTH OF VIRGINIA DIVISION OF MINCRkL RESOURCES +sd,,,',." SPECIES 6-28-87 -:- ,**,-+* Zm zo~rcrorronmleagrass) Hv Hudrilio vrrf~iiiiaro (hydnlla) SURVEY STATIONS Rm xwommonnmn (magan graa) Hd Hercraniherudubc~[water slargrarrl URBANNA, MD MS Myrio~hyllunrpirorun(Eurasian watermilfo~l) Pcr ~oromogrroncrispw (cu3y eondweea) Chaner Boat Fleld Survey VA Ppf ~o~mqemnperfofoi~aiw(redhead-grass) Cd ~eraroph~iiundrrnrmum(coontaq Crhzens Freld Observation Ppc Pnzmwxeronprciim8ur(sago poodweed) Ppu Poimo~rtonpunllw(slender pondweed) 110 1-8 Zp zono~chrlhapoliirsi~(horned pondvssd) Ngu Nqm x&i~p~p~p~ps(rwthm naladl VIMS Fleid Survey A &N% ,633 ,,wc %E*9E, ,m,. N Najaw Inatad) Ngr N~,Wsr~orlrmo inelad) i USGS &NVCC Survey Ec ~lodeoio~dmnr (common elodea) C chnrop (murkgrass) Va vollirnrno~vncvnv[wid celery) Nm ~a,a.mmr [slender naladj SCALE 124.000 Tn rrapo mom (water chertnut) U unknown vues cornp051ttoo --- >so I XIIOUeTlrl 187 UNITED STATES COMMONWEALTH OF YIROINIA IRVINGTON OUAORANCLC DiVlSiDN Or MINERAL RESOURCES Zm loiaro mnnm (eelgrass) HY ~~drliiovrn~cillu~o(hldnlla) SURVEY STATIONS Rrn nup~mmo~smojw~dgeon grass) Hd ~ereruniherod~lrejw~er~largrars) IRVINGTON, " MD Chaner Boat Fleld Survey Ms M~r~onhyiimr+n~carun(Eurasian watsrm~llorl) Pcr P~rnopr~~~nspur 1,:uOy pondweed) VA Ppf Poiamorrian~er/oiiorurlm(iedhead-prass) Cd CrroiophyiImarnm on imofltaaIj C~ttzensField Observatton Ppc Pozm~eron~ ,,,-# SUBMERGED AQUATIC VEGETATION - 1987 I I .,#I awm 3.3-1 - - ,+ ;I?-- . ,, ,m, s,,- 3, .,," .,, ,.sc<",,,s .,, 5. 7 DATE FLOWN SPECIES 6-6-87r*9* Zm Znrrerow~m(eelgrass) Hv H~il!arrmc~llaro(hvdnlla) SURVEY STATIONS Rm nqpmmuir- (mageon grass) Hd Hereronihera d&zo (water rtargns) NANDUA CREEK, Ms MynophyNunsp~ranun(Eurasian *laterm~llal) PC, Poru~gr~nrnlpw (wny pondwoed) MDCharter Boat Fteld Survey VA Ppf Pouu~grro~~prdob-(redheab-~rass) Cd Cerarophyllumd~nursm(coontaaf~ Cltlzens Fleld Observation PPC Pou~ogrronpcn- (saga pondweed) Ppu Pamgronpunllur (slender pon,Weed) 113 ,*8 Zp Zamekll~aplumrr(horned pondweed) Ngu Nolor g&lqennr (southern nal 3dJ A VlMS Field Survey .- *t.g m -.,Lmcq p . N Nwsw Inatad) Ngr ~oinrsrm,ll,m(mad) + USGS 8NVCC Survey EC £!dm c&mu (mmmon elodea) C chnro5p (muskgrass) Va Vollrrornaom.nco~ (W#W mlery) Nm ~o,arm~r(slender na8m SCALE 1 24 000 Tn 7rqo ~ronr(water chestnut) l U8Lr U Unknown speaes compwtron - -I l,lh(ETLR Va vallsnerta MY~C~M(1116 celery) Nm Noimmmr [slender nalad) SCALE 1 24 000 Tn Trromiom [water chestnut1 , WLE 7 --, U Unknown spcles comparltlon 5 0 Ppf Poimgrionperfoiialw(redhead-grarr) Cd Crrnrophylfmdm (coolall) Ctt~zensFleld Observation Ppc ~omgrronpeinrurw(sago pondweed) Ppu Poramogrronp*nllur (slender pondweed) Zp zonnicllrll~opalurn. (horned pondweed) Ngu Na,ar~uodnlupmnr (~0uthe11mad) A VlMS Fleld Survey N Nojar r,,p (naiad) Ngr ~ajargra~~ll~m(na~ad) 1 USGS &NVCC Survey Ec Elodea ~odw(mrnmon elodea) C Chnraa (muskgrass) Va vas~snma-r~c~~(w~~ce~po Nm aim mmr (siender nalad) SCALE 124.000 Tn rrqo mronr(wa1er chestnut1 s M8LE -- P U Unknown species compos#tcon C0Mh""NWEALTH OF VIRGINIA DIIISION OF MINERAL RESOURCLS JAMES L CiiLVtR,,,*,,, STATE". GEOLOGIST ,U.'":-":".". Y "LL< rr s.., *. ,,," ,*.-*~~' ,,", ,# ..i- . , , c '\ ' .: Lz, ;,.;.& .-,, SUBMERGED,7 .,.,/- AQUATIC ;. -- . A VEGETATION - 6:. ,, riE;fyILL*.II~)~~'~ . .. . . E .:'. DATE FLOWN "',f' '~f SPECIES 6-28-87 ,*'.' Zm zo~rera-w (eelgrarr) Hv HydriILo um~~elrlmo(hyanlla) SURVEY STATIONS DELTAVILLE. Rm nw~iamrrr- (widgeon grm) Hd ~errrwhcradubto (water stargrass) Ms Myno~hyllunrp~co(um(Eurarian waterrmlto~I) Pcr ~ol~wgcconrrupu( (curly p~ndwsd) MD Chaner Boat Fleld Survey Ppf Po-ge8onw.f.llorw (redhead.grass) Cd Crramphyllum&ounwn(m~ntaal) C~tlzensField Observation Ppc ~ouu~gttonp~cnmw(sago po~) Ppu PO-~~~O~~~~II~(slender wndveed) Zp Zonn~chrlf~a~u(r~~(horned pondweed) Ngu NO,* gdupmns(roulhern naiad) A VlMS Fleld Survey N Nwac rpp (naladj Ngr Nojargrocrllm (naiad) i USGS BNVCC Survey Ec Elodrv ramdenrrr (mmmon elodea) C Ckrasp tmusk~ra%) Va val1unerta .wrtcam (wfd CBIBVJ Nm Nwar mwr (slender netad] SCALE 124.cc0 Tn Trwop. norm (water ehsnnlni 1 Y116 -. . - P U Unhnown species compos8tton >lo I XIUYETER SPECIES Zm ~onrromnw (eelgrass] HV H)dr,llo vm~rillom(hydnlla] SURVEY STATIONS Rm (W~~QBOBO Hd ~ruronrhrradubio (water scargrass) Ms Mynophyllm~pc~rm(Eurasian waterrnllfo81) Pcr poromageron crrpu (cudy pondweed) MD Chaner Boat Fleld Survey Ppf Po-gr~e~pol(redhead.gra~r) Cd Crrorophyllundemriwn (coontall Cltlzens Fleld Obsewatlon Ppc ~omgronprcn~nrr(sago pondweedl Ppu Pnroma~c,onpu,llu(sleMer pondweed) Zp ~o~nhell~n~olun~(horned podweed) Ngu ~o~argudd~mrw(routhein naiad) A VlMS F~eldSurvey N Noiorrpp (naiad) Ngr ~qarsrmdl~m (macadi f USGS BNVCC Survey Ec Elodeo ronadenirr (mmrnon elodea) C ihnrnrp (muskgrass) Va vdl~orrraomrrzra~(wtld celev) Nm ~o,ormwr (dender naiaa) SCALE 1 24 000 Tn Trow wrnr (water ch~~tnufl - l M,LE U Unknown rpeaescornpor,t#on DATE FLOWN ' SPECIES 6-28-87 Zm zorieromonw ieelpras) HY ~~m~iiuumi~iiiuin(nycclla~ SURVEY STATIONS Rrn fiwpunwnnm jw8dgeon grass) Hd ~~~ero~ih~~~dib~~(watir aargr-I MATHEWS Ms nr~~ophyllwnr~~cnzu,(Eurasan walerrn~llo~l) Pcr ~a-~rro~inmrr(euly pondweed) MD Charter Boat Fleld Survey VA Ppi Poramogeionp~rfoBo,~(redhead-grass] Cd Cerorophyiimd~m~rrun~coontal) Cltlzens Field Observat~on Ppc roimarionprcilMrrr (sago pondweed) Ppu ~o~~~~~oprr~iiu(sl mder pondweed) 123 4t. Zp Lowckll~apalusa(horned p~dweed) Ngu huias ~~iupruir(soithain oatad) A VlMS Field Survey "~ . N Aojarrpp (oafad) Ngr (mecad) i USGS aNVCC Survey Ec Elodro conodrnrir (common eldea) C Chorosp lrnurkgrarr) Va ivssnrria ~vrico~lwlld celery) Nm ~ojnr~~~(slendernasaa) SCALE 1 24.000 Tn Trope wrum (water chestnut1 ---- ' U8LL U Unknown species cornposllron -. - s 0 1 <(1IOUBTIE / 0 DATE FLOWN SPECIES 6-28-87 Zm Zoiirru mon~(eelgrass) Hv Hydrilin urmalfaio (hydnlla) SURVEY STATIONS Rrn Rwpionulriiimn (wdmgrass1 Hd ~ezaronrheradhii (water siargrass] NEW POINT Ms Mynophylfm~prruiun(Eurasan waterrndloil) Pcr romfrron rnspw (cumy pondweedl MD Chaner Boat Field Survey COMFORT, VA Ppf Poiomogrrunprrfoliaruiredhead-grass) Cd Crrornphylfumdrrmrrum (monta81) C111zensFleld Observation Ppc Po8m#rionrrai~8urisago pondweed) Ppu r~iomogeronpwiiiw(slender pondweed) 132 Zp zann~rhelrta~luov(horned pondweed] Ngu Nula yvoduluprnsrr (soulhern nalad) A VlMS Fleld Survey ~U,, . , , ,. N Nom mp inalad) Ngr ~a,a~roallmul(malad) i USGS BNVCC Survey Ec Elodrcrcoacnemu (mmmon elodea) C Chorosp (muskgrass) Va Voifcrnsna vmrrzrv~Iwlld celery1 Nm ~a,armnor (slender nalad) Tn Trupil rwiam (wafer chestnut1 - -5 ~-&SCALE 1 24 000 F (I, , , . , ,?"-Y I - - / /L~- ,, , , v. , * r , , <*-. , ,,* >t 0 ," . b- ' DASFLOWN:, r SPE CIES 1 6-28-67 *;, Zorrcrnmon~(eelgrass) SURVEY STATIONS Ruyparmn,,rm (*eon grar+j CAPE CHARLES, MD Chaner Boa1 Field Suwey Mynoph~llmrp~colvm(Eurasian wlermlllod) PC1 ~oyy~l~eroninspur (wfi ponmeed) VA Cd rerarophyilun&mrrrm i;00nlarl) Pomgrlonprrlabonrr (redheabgrass) C~tlzensFleld Observation 133 Pomgnonpccrmniw (sappondwad) Ppu Po-gr~onpurallur (rlenJer pondweed) Zm,"rkll,up.l*m,s (horned pandweed) Ngu ~amr~~uprntu(somltern naladl A VlMS Fteld Survey Nwm spp (naiad) Ngr ~oiorgmorignw (na~adj i USGS &NVCC Survey Elodro camirnrlr (mmmon elodea) C Cmesp (rnuskgra~~) valiisnrwmnro~(w~ld celery) Nm ~a~arMM, (slender nalal) SCALE 1 24 000 rupa MISN (water ches~nutl --- . -->MILE UnlnOwn speoes mmposltion --- - . 110- ' KiLa("6R '~<,?." YORkTOWN O,lb"RApll:li , UNITED STATES COMMONWEALTK OF VIRCIN~A DEPARTMEVT OF THE INTERIOR b,WL.,NIA DIVISION ili MPILIA~-1 .IOUHCES ,,, , .",, ". ~" I s;. SPECIES Hv rrydr~iin~emc~llaro (hydn la) $3 Zrn &$,ar. m,M (e.lgrasq SURVEY STATIONS YORKTOWN, ~qpiamonnm.jw~dgeon grass) ~etemnih~mdvAio[wata stargrass1 Rrn Hd II MD Charter Boat Field Survey Ms ~~nophyiim~~croim[Eurasian watermlfo~i) Pcr ~,~m,~~c~~cr~rpuc(cud i wndweea) 4 VA Ppf ~~~omognonprrfoi~oru[isdhead-grass) Cd crm,ophyiiwncmrrm coontarl) Cttlzens Field Observatron 139 Ppc ~om~rronpecii~#w[sago pndweed) Ppu ~oiumopri~~~uriliuj(sle8ider pndweed) ,*- FW,,T >mk,#-ec, ,*m, Zp 2n,~n~~kleupoiurrzs(horned ~ndueed) Ngu hu,rn~,&~qm~~(sowhern naiad) A VlMS Fleid Survey ,. <,, -6 b,".s,8. N ~~~rnrpplnalad) Ngr Nuirngroc~iiinwlnalad) I USGS SNVCC survey Ec ~l<,droco~drmu (mmmon elwea) C Chnro lp (mushgrass) Va Vn'ilrnrno~vrica~(wlld cslevl Nrn &'ava,mmlWjr (slender "a14 SCALE I 24 000 Tn Trope mrom (water chestnut1 > M,,E ------I U Unknown species compos#r#on - --- 5 0 I XILOUETEII I 204 d7FD S-i i ES POOUOSOli WEST UUlORAN(iLt COMMONWEALTH OF 'IIRCINIA YIRGNtA uii all^ l\iNT OF THE INTLRIOF ~. DiVlSlON Oi MlNERIL RSSOURCE 75 MlNdll .FRIES .~UI~OC~L~II#LI,' 2m Zoircm miur~jeelaras5) HV nydri~lavirocliiain (hydnlla) SURVEY STATIONS Rm nqpm munimm (wldgeon grass) Hd ~etrronrhradubio(waer slargrassi POQUOSON Ms Mvnogh~!lm~pcormIEurastan waterm~llo~l) Pcr ~owmo~rronrnrpu (curiy pondweedl MD Chaner Boat Field Survey WEST, VA Ppf ~om~e,onper.foirarur(redhead-grass) Cd carorophviiwn,iemrrrum (coonta\lj Citizens Freld Observation Ppc Por~~ogc;r~zn.wuisagopondweed) Ppu rrrm~e~unprr,Nw(siemer pondwead) 140 I*-9 ,me. 2p Zann,chslliopulli.nlr (horned pndweed) Ngu ,Na,m8udoiiprruir (southern naad) A VlMS Fleld Suwey ,*<~I*".O.I",,Ir.. .~ . N N~~arsm(napad) Ngr Cli,argruci!icmri (naiad) i + USGS BNVCC Survey Ec Ebdru cnderuu (common eladoa] C cham sp imuekgrass) Va rhll~,nr~omrr~om(~~ldcslev) Nm ~qarmnor(slender netad) SC4LE 1 24 000 Tn noram (water cnestnuti - -- - 8 M,LE U Unknown speoas cornpompon -- t X,LC*ITFII i UPIITED STATES PDOUOSON LAST OUIDRANCl t .. COMMONWEALTH Oi VIRGINIA '?:, '?:, DEPARTMENT OF THE INTERIOR VIPCNi* nvislrlN ai MINERAL RFSOURCES -* , GEOLOGICAL SURVEY - 5 KlNUTE 5tRli". ~'o,' :I- DATE FLOWN SPECIES 6-6-87 Zm Zoritm mrim (eelgrass) Hv ~rdrillav.~n~i~iloia Ihyanlla! SURVEY STATIONS POQUOSON Rm ~uppiomanflm lwdgeon grass) Hd IInuronLrm duhiu (wale! s aigrassj MD Charter Boat Field Survey Ms ~yn~,phy~lm~p,ceiwn(Eurasian ~a!~rrn,!!o~l) Pcr ~~~inmoyr,oniri~pr,(cuny ,o"dweed) EAST, VA Ppf Poimpat~npo~fol~~~u(iedhsad-grass) ' C,d Ciruruphvilmd~m~i~mlaianla~l! C111ZensFfeld Observation Ppc Pommgemn px,,mcw (sago pondweed] Ppu ~o~u~gern~pwitillc(slendlr pondweed) 141 ,036 Zp Lonn.chaliiogalurrr,~(horned pndweed! Ngu how pun*iiwmrri tsoulh m oarad! A VIMS Field Survey -M<>,<>eFb,sz" **,.* ". .% ,, ~,, &,. N h'oim rpp (na~ad) Ngr NO,= ~r~oiem(naiadi i USGS &NVCC Suwey Ec Elodto codemir (common elodea) C (hum sp (muskgrass! Va ~olli,~~~oamrricum (wild csle~) Nrn va,~~,~r(slendermad SCALE 1 24 000 Tn Trap~imrom (water cheslnuli -*.-, ------.- .- 1 M,.E U Unknown spec~escompas#l#on ---- I50 -3 X,LOMETER - COMMONUCALTH OF VIRGINIA kLLlOllS CWEFk 3UII:KAhL,.l 01YiSIO'i OF MINER&, RESOURCES VIHCINIA NOVrllAMF1IIII (L JAMES CALVER STATE OEOLmlST 15 MINUTS SERFS 1T0110iHAPhI ., ,. I-, '" DATE Fi6wNt ,;:+ SPECIES 6-28-87 . 3 Zrn &raronunw (eelgrass) HV ~ydnilover~i~iloia (hydnlla) SURVEY STATIONS ELLlOTTS - Rrn Rcqnio mnncimn (widgeon grass] Hd Herrronihm dubro (water stargrarr] Ms ,w,~?,nophvlium~iro~un(Eurasian watsrm~lto~l) Pcr Pornoarion cnrpur (cW pondweedl MD Chaner Boat Field Survey CREEK, VA Ppf ~o~~aemn~~~ojoearnl~edheadgra~s] Cd Csrurophyilmdrrwrsun (~oontalll Citlzsns Feld Observation Ppc Porumosrronnrinmtu (sago pondweedl Ppu Pouu~grronywillu(slender pondweedl ,.,- , ,.'142 Zp lnnn~~hri1~onoluna(horned pondweed/ Ngu Najuguadnlcqmnr (southern naladj A VlMS Field Survey ,9*B ."~..3. , * SLW,, , . N ,voiar wp lna~ad) Ngr iniossrnc,ii~nw(naiad) uSGS ~NVCCsuwey Ec tlodro iv~drnrir(mrnrnon elodea1 C Chnros (muskgrass1 Va 'nilonrna onunComiwl~d csieiyj Nm ~aimm~~risienaer naladi SCALE 1 24 000 Tn rrupa mruw (waterches~nu(l > "1CE U Unknown spec~escornpos~t8on -----5 0 ,x,L~~~Tsm C.d ( rruiopk~ilumdrmrium[coo >tail1 Po~m,reronprrf~liuiu(redhead grass) Citizens Field Observation Pormprron prcrinoiw (sago pondweedl Ppu Pormpezzx ouwl,~~(slender pondweed/ z~nn~cisll~u~ol~~nr(horned pandweedi blgu hsar qvdoiwirmri (southerr nalad) A VlMS Field Survey Ngr N,m yrui~llim(naiad) Nnjor*m lnaladi I USGS &NVCC Survey Elodm -ndemu (common dWsa) G [bra cp lmuskgrass) v~lhin~nul~~rirvnu(wM cels?f) Wm Y,, mrrar (scndsr "am11 SCALE 1 24 000 iropo nornu (urater chsstnutl -z-2>r*==, -- 1 WLE Unkno,vn spec~escornposttron -=---A 5 0 l K#LDUl,lil CJAIFFIOW~II SPFCIES C (. 07 Zm /,>ctrril mr#wisaigr(~(~(~) HV ii9drlilx rf.#i,i!in~~JIhydnila) SllHVFY STA1lr)NS hrn K~P~,,,WZ~,,IW .~UIQWPQ.X%F, HO ,~.trrnnihr~rr,viili,iwgte, sterrlrileq, HAMPTON, I Ms ~rr~,,smiiunipii.xun rEurarar ra~srrn,lfo.l, iJcr I.,~,~,~~C,,~i,,rpui hvd~~nreh4, MD r,l!artat Em71 r lqlrl Surv-y VA Ppf l'nmw~u~~~.nr~rf~~~~~~.IIwll#(lab?r,F~~ Crl r ~~na,r~h,llurnmur.un1IIXlr,tailI Cltlrntl~F141d Ohm~ldll~r~ PpC Pn-frmny,iiiwi-s-s-s Iwgo ~arrhasn) Ppu i.~r~m,,~,,~~npu~~iiu.lsl~~r l"wk~9rl) 147 , *c ,=. .- Zp /nmm,biranpniuc,,,. lh~sr,~y)r.%n*g) Eiqlr ,J,L,,Z, ,urr.!uo...8. kmrlarr r,ewir A VIM?, Fjnld N w~jn,,v mmw) Nqr ,I,,,,.. ,,,,,,rhw, inawli i 1, <, C :: 4 bl 1 , , .,,trdey Ec itden rnwmczi irnnmmor almasi I, iwrnV ~,nwcq,w+~ Va boiii.n,rin unrrlma,z In10 mlgrf btrn t,,,p,r "I,w,? 8s8qmr r,=,aedb %,A2 I , i4 rf,, T" ,...Do .ninne 'w*ar .-as,"," -----, .", I, tlnknr,"'" ira.,49',,..~",ci.,," ----- ,.,S.?" UNITED STATES COMMONXEALTH OF VlROlNlA CAPE HENRY QUADRANGLE i~"' DEPARTMENT OF THE INTERIOR VIRGINIA YIYOINIA BEACH CliY DIVISION l>iMINERAL RESOURCES GEOLOGICAL SURVEY 15 MINUTE SERIES TOPOGRAPH\C) 'y' .,." ,arwrrcuuii p - ~ ,%? 210 11i0000rcll YI r~- . ~~ ' I 1- , , - ,*,$ ,:;" SPECIES 6-6-87 "?*. J ., Zm lonrro -no (eelgras) Hv Hy&iiio vrmc~~laia(hydnlla) SURVEY STATIONS CAPE HENRY, %k Rrn ~uppmnuummo (widgeorl grass) Hd Hmronihrra dubio (wafer stargrass! Ms My"~"ph#Im~g'cdm(Euca~ Va voliuwnnnnuncow (mM c~len! Nm aim MM~(slender nalad) SC4LE 1 24 000 Tn Trwmiow lwaler chestnut) l UllE b. -- 7- U Unknown species composrtlon IDI KiLClllTlR SPECIES Zrn Zosuromoriw iselgrasq H#~~IOvrr,,rriiniu I hmlla) Hv SURVEY STATIONS Rrn RW~ murr~,mu (w~dgmograss) Hd ~ere,omhmdububis(water starg~ass) BRISTOL, MD Chaner Boat F~eldSu~ey Ms M~r~o~h~liwnrpiravnif ura5ie.n watermill~lll PC< Po-gnoh ~nspw(cudy pandweed) MD Ppf ~uromogaonp~r/oiinrurw(redhead-grass) Cd c~rr.rophy~lumdrmersum(coontad) C~ltzensFleld Observation Ppc Po-srmnpriswlw isago pondweed) Ppu P~~nea~pw~lllirislender pandweedi 159 Zp Znnnickliiopolwrr~r(horned pandweed) Ngu Nol~~gvodalprmrr(soulhern mad) A VlMS Field Su~ey P"oToRE"t5er q,9 .v .,. . , , N Nojar spo lnaladl Ngr Naia gryali~mu(na~ad) I USGS ~NVCC EC thdra runod~nrmicommon elodea) C < haro rp imuskgrassl Va v~llrrnrrcornr~~o~ (wtld celevi Nm Nojmmmr [slender nalad) SCALE 1 24 000 Tn rrupo ~~onr(water chestnut) 1 U4II ?% U Unknown spsclas comoosition ,so 0. Z" UNITED STATES PORT TOBACCO QUADRANGLE Ppl Pc,mgrronp~rfoliom(redhead-grass) Cd Csr~iaphyllwnd~mr~~(eo~nt~l) Cltlzens Field Observation Ppc Pc.~~~~o~~ec~~~t~(sago pondweed) Ppu ~~z~~~r~~~uiilw(sIen4er pondweed) Zp Zannahrlbapolurn~(horned pondweed) Ngu ~~~rngvndul~rnrir(southern naiad) VlMS Fleid Survey N Nuju rpp lnalad) Ngr ~o/orgraoll~mojna8adI USGS &NVCC survey Ec ~ld~acanademu (mrnrnon elodea] C Chororp (murkgrass) Va ~~~~~rnerzaamrrlroM (~,ldeaisty) Nm No~rnmmr(rle~ernai.ld) SCALE I 24 000 MZ~N(water chesttutl l MllF Tn Trow a------U Unknown speoes mmpos~l~on -- p ->so 3 x,LoME,En DATE FLOWN SPECIES 8-11-87 h ha-(oOmW Hv nyddawmdlu(hydd!sJ SURVEY STATIONS Rm --(q*on~rpl) Hd ntur&ro&m (me, agrm~ BERLIN, MD Charlet Boet Fleld Survey Llf umoprMlrrmmnlEVIW-J PC? Potmwm (Cu* P-) MD PM P~--I-*(--) Cd crr~&mmmI~~IJ Cnlzens FI& Ob8ewa110n 167 PPc p~a~F--"lW~ Ppr Potmq11~1pu1wIlu1U.nd.r PO-) 2-2 ?*OTO"EYI.ELI 2-7 ZP -mh-!J~hrnam Mu NW~-~~WU1-m ~1.d) VIMS FlMSurvey mM. 3-0 8 m..a,. ,% ,, AQUATIC VEGETATION - 1987 '" 7,,,. ,. .. . , 7 . .9, 3. -, I DATE ~~owN.1- ,?i'." SPECIES 1 8-1 1-87 ZOIIL~.DWllM (eelgrass) Hv H)drillo vrrt~illuio(hydrlla) SURVEY STATIONS RwpY mnniimn (widgean grass) Hd Haeronihrro dublo (wale Stargrass) ~~nophyllul~~(priorumul(Eurasian waterm~lIo8l) Pcr ~orumo~rioninspur (cuil, pondweed; MD Chaner Boat Fleid Survey Poromogrronprrfoliurw (redhead-grass) Cd Cerorophyiiundrmrrun coonlal) Cltlrens Field Observation Po'~~gn~nprcanorus(saga pondweed) Ppu Po8mprionpw~llu(rleilder pondweed) lonnirhriitopol*nru (horned pondweed) Ngu No~avgdiwmnr (soulhem naad) A VlMS Field Survey ~oiarrpp (naiad) Ngr N~i~urnctl18.wInasad) i USGS &NVCC Survey Eleden ~anndDmi$jcommon efWea) C Chorusn (mustgrass) va.l~menomriionn (wmld celery) Nm ~eiarmi~r lemer oaid; SCALE I 24 000 7,~pomrom (Water chestnul; -- - - 'U8LI Unknown species composrtron --.-- 5 a I XILMTEII uYlic0 STATES TINGLES iSLdND OUADRANGLE MARYLANU UOYribrtV \.I> -< -.- I L"~~IMENTOF THE IN1CRlOS ,* i i MlNUTE SEUlfS (TOPOGhAPLIIC' % GEOLOGICAL SURVEY ,,' SPECIES Zm arreronuurw [eelgrass) Hv Nydnlla vm~ctllola(hydnlla) SURVEY STATIONS Rm nuppumrniimn (widgem grass) Hd Ne8crmBeradub~~(water stargra) Ms Myr~iahilulmiciahiah(Furanan w&term#llo~l) PCr Po-germ rnrp~l[curly pondweed) MD Chaner Boat Field Survey Ppf Pormgrionprfolia,~ltedhead-grarrl Cd C~rocophyllumdmununlcoontaill Cltizens Fleld Obsewatlon Ppc potw,e,on pec,,wtu (,ae,panaweea) Ppu Pol~vlgrionpvrill~(rlenaer pondweed) Zp Lonnic&llropalurnr (horned pondwesa) Ngu Naja guodnliqrm~r(southern nalad) A VlMS Fjeld Survey N Nujor spp (nsled) Ngr ~oiar~r~cill~rnr(namd) U S G S B N V C c Survey Ec tbdeoianodmmrc (mrnmon elodea) C Chmrp (muskgrass) Va voii~mmo~uncn~ (mid celery) Nm Naiar mmr (slenaer nalaa) SCALE 1 24 WO Tn rropu miam (water chestnufl >MILE -. . - ___== lJ Unknown speasscornposit~on L ,so- , *,LOUETIR i Ppf p~-g~mnrwm~uy~(mherCg-l Cd ce~d.-mm~mM.Y) Ppc P~8n"prallont(sqoP~ Ppl Paaog..rpurlRur 1S!-mr Wrrg N~UN&-~W~M~IWU , zp zMnrch.lllld",w, 1- 1 Ngr ~&gmdfha i N NWW Indad1 1rui.d) 7U S.G S. & N.V C C. Sum Ec ~!dzmm&wu lmmmon w) C CkOlp~M.LO~) 1 Va vdu~mmrn- lvild dew) Nrn ~wurl*ndunUm SCALE 124.W Tn rropa-(rrUlbun~l h- U unknown We8 mrnpoubon -I- -~:- ,/' ,I \,-'" 4 DATE FLOWN "" / ., 8-1 1-87 // P / CHINCOTEAGUE TIIVS 1 oVP i i EAST, VA .. i ,/ -. /-I-... 175 3--. ,6 , t .. , .. lr" SPECIES HY liydrllln irnliilloiu (hydnlla) *. SURVEY STATIONS IRm iiq,,,~ -I,njrnn (w#dgeangfas, Hd Hereron~hrro~luhio[water alargiass) Ms ~~n~~phph,!llun~~n(tura38an walermlfo~l) Pcr ~~wrn~~~t~~~~,iipu'(cunywndweedj MD Chanei Boat Fleld Survey 'pl r,.rn,,.~ea,,,,~,,fi~,,.rw(redl ead grass, Cd c rruimitrirm drmrrsum (coontail) Clt~zensField Observation I'pc P~~~arne#e~,~noc~r~nuiu(sag' pondweed) PPu Pt~~m~g~~~p~~I!~(slender pondweed) k., L ' ', / .!F 7o~x?~1chrlliupiiiii~fr~~(horn?< pondweed) Ngu ~njar~uodnl~euu(southern naiad) A VIMS Fleld Survey . J Id h,iint lm (naladl NQr ~qorgrocrlliirmn ("am4 ..I I- USGS BNVCC Survey 1% ir,,nra, (common 31odeai C ( ~rorp lrnuskgrars) de i u#i~nm~.merrcom(w~la ccclery~ Nrn $'e,a mmr (slender namq SCALE 1 24 000 in !,or,, miom (water chestnu I ----- 1 M,LE d Unknowrl spec~eicowposlf on --- 5 b 1 XXUE,&R "*. .* I.. . UIIITFD STATtS ANICOSTA OllAOKhNtiLF '+"_ DEPARTMENT UF Tnt lYTFRiOK nsrmir or IULIMESIA MA, .*',I GEOLOGICAL SUKYF" Zrn 20arro nwnm (eelgrass! el" ,', ,t./,o vrr:i,r11 0,yOnlia: SURVEY STATIONS ANACCST' Rrn nuppinmoni rd !w>dgeot,grass, Hd !;,..liuninrru diiht,> Iwi!i:r :*argrassi MD Charler Boat Fleld Suwey Ms M~nupbiiwnipiialmitilrarian wa~ermillo~ij Pcr r,,r,,..,ae ...~r lcvny pondweed: DC-MD Ppf P0~mo~e~~,~,~e~fi~e~~rz,liedhsao grass] Cd r rr,ilt,nh~iim~d~mrr,articoorVaii' @ Cillzens Fleld Obsewallon Ppc ~,,ionu,vr.~npr.,iiwrw (@a90pondweed, +p~. P i.,un,,irinpucr;;~s :sirrdor pandwend: 1 76 ,qs, Zp ,,in,ucai!',,ip,.,~,trt~ (horned wr,eweed, Ngu ,, .r ~~iblliweni, ,io.,:~ei8. laladl A VlMS Fteld Suwef S&7M"ME,P*" *DC,,,, , ,m, " " N hqm,pp maladl Ng, %,,,,L~ xrd,,!;,m ,,w6d, .,., ,. USGS &NVCC Suwey Ec b;hdru .,miir,uti tconmon elweal !, . hniu ,, lrnuskgraisi Va ro;ilinriiuunrriluui,wtid calevi Nm %,riominnr issenour na~ddl SCALE 1 74 000 117 nuram ,water c?estnu, ,, ,,,1 ,,, -----I MILE il .,"known 5pnesLi "pas#,Jr, ----< p- + - 0 , *,La,C,E,, - - .--- - .- . .-. ------APPENDIX D 1987 SAV BED AREAS FOR EACH TOPOGRAPHIC QUADRANGLE APPENDIX D NUMBER OF SQUARE METERS OF SAV FOR INDIVIDUAL BEDS BY TOPOGRAPHIC QUADRANGLE. (SEE MAPS IN APPENDIX C FOR LOCATION OF EACH BED. QUADRANGLES ARE LISTED NUMERICALLY BY VIMS CHART NUMBER.) ABERDEEN MD. HAVRE DE GRACE MD. (continued) VIMS CHART # 002 VIMS CHART # 003 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 30387 DENSITY 4 = 11416 TOTAL - 41803 HAVRE DE GRACE MD. VIMS CHART # 003 TOTAL------AREA DENSITY 1 = DENSITY 2 = DENSITY 3 = DENSITY 4 = TOTAL - NORTH EAST MD. SPESUTIE MD. VIMS CHART # 004 VIMS CHART # 009 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 19188 TOTAL AREA DENSITY 3 = 37290 ------DENSITY 4 = 3414 DENSITY 1 = 3562000 DENSITY 2 = 4459 TOTAL - 59892 DENSITY 3 = 230089 DENSITY 4 = 0 EDGEWOOD MD. TOTAL - 3796548 VIMS CHART # 007 EARLEVI LLE MD . VIMS CHART # 010 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 3823 DENSITY 3 = 1352 DENSITY 4 = 0 TOTAL - 5175 PERRYMAN MD. TOTAL AREA VIMS CHART # 008 ------DENSITY 1 = 0 DENSITY 2 = 6483 DENSITY 3 = 40401 TOTAL------AREA DENSITY 4 = 0 DENSITY 1 = 0 TOTAL - 46884 DENSITY 2 = 0 DENSITY 3 = 29280 DENSITY 4 = 0 TOTAL - 29280 MIDDLE RIVER MD. GUNPOWER NECK MD. (continued) VIMS CHART # 013 VIMS CHART # 014 TOTAL------AREA TOTAL------AREA DENSITY 1 = 20030 DENSITY 1 = 62297 DENSITY 2 = 82560 DENSITY 2 = 97992 DENSITY 3 = 27035 DENSITY 3 = 502870 DENSITY 4 = 90810 DENSITY 4 = 242275 TOTAL - 220435 TOTAL - 905434 GUNPOWER NECK MD. HANESVI LLE MD . VIMS CHART # 014 VIMS CHART # 015 TOTAL------AREA DENSITY 1 = 217400 DENSITY 2 = 76860 DENSITY 3 = 128640 DENSITY 4 = 604 TOTAL - 423504 BETTERTON MD. SWAN POINT MD. VIMS CHART # 016 VIMS CHART # 020 TOTAL------AREA DENSITY 1 = 3171 DENSITY 2 = 10521 DENSITY 3 = 2357 DENSITY 4 = 0 TOTAL AREA ------TOTAL - 16049 DENSITY 1 = 0 DENSITY 2 = 106300 ROCK HALL MD. DENSITY 3 = 65709 VIMS CHART # 021 DENSITY 4 = 26116 TOTAL - 198125 GALENA MD. TOTAL AREA VIMS CHART # 017 ------DENSITY 1 = 42710 DENSITY 2 = 0 DENSITY 3 = 0 DENSITY 4 = 10400 TOTAL AREA ------TOTAL - 53110 DENSITY 1 = 0 DENSITY 2 = 0 GIBSON ISLAND MD. DENSITY 3 = 75689 VIMS CHART # 024 DENSITY 4 = 0 TOTAL - 75689 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 2581 DENSITY 4 = 0 TOTAL - 2581 LANGFORD CREEK MD. LANGFORD CREEK MD. (continued) VIMS CHART # 026 VIMS CHART # 026 AA3 BA2 CA2 DA3 EA2 FA2 GA3 HA1 IA3 JA3 KA2 LA2 MA2 TOTAL AREA NAl OA3 DENSITY 1 = 29415 PA4 DENSITY 2 = 1061133 QA3 DENSITY 3 = 922118 RA4 DENSITY 4 = 2979086 SA2 TA2 TOTAL - 4991752 UA2 VA4 CENTREVI LLE MD . XA2 VIMS CHART # 027 WA4 YA2 ZA4 AB2 BB2 TOTAL AREA CB4 DB2 DENSITY 1 = 0 EB2 DENSITY 2 = 2294 FB3 DENSITY 3 = 12180 GB3 DENSITY 4 = 0 HB3 IB4 TOTAL - 14474 JB4 KB2 KENT ISLAND MD. LB3 VIMS CHART # 032 MB3 NB3 OB3 PB2 QB3 RB4 SB4 TB3 UB2 VB3 WB3 KENT ISLAND MD. (continued) QUEENSTOWN MD. VIMS CHART # 032 VIMS CHART # 033 AA3 BA2 CA3 DA3 EA3 FA2 GA3 HA2 IA2 JAl KA4 LA1 MA2 NA3 OA3 PA1 QA3 RA4 SA2 TA1 UA3 VA1 WA4 YA2 XA2 ZA4 AB2 BB2 CB3 DB2 EB3 TOTAL AREA FB3 GB2 DENSITY 1 = DENSITY 2 = TOTAL AREA DENSITY 3 = ------DENSITY 4 = DENSITY 1 = DENSITY 2 = TOTAL - DENSITY 3 = DENSITY 4 = TOTAL - ALEXANDRIA VA.-D.C.-MD. CLAIBORNE MD. (continued) VIMS CHART # 034 VIMS CHART # 036 TOTAL------AREA DENSITY 1 = 312860 DENSITY 2 = 452700 DENSITY 3 = 136750 DENSITY 4 = 466644 TOTAL - 1368954 ST. MICHAELS MD. VIMS CHART # 037 TOTAL------AREA DENSITY 1 = 14130 DENSITY 2 = 80838 DENSITY 3 = 14430 DENSITY 4 = 4600161 TOTAL - 4709559 CLAIBORNE MD. VIMS CHART # 036 ST. MICHAELS MD. (continued) MT. VERNON VA.-MD. (continued) VIMS CHART # 037 VIMS CHART # 040 TOTAL------AREA DENSITY 1 = 377550 DENSITY 2 = 337553 DENSITY 3 = 928924 DENSITY 4 = 671930 TOTAL - 2315957 FORT BELVOIR VA.-MD. VIMS CHART # 039 TOTAL------AREA DENSITY 1 = 291670 DENSITY 2 = 227620 DENSITY 3 = 348700 DENSITY 4 = 9699884 TOTAL AREA ------TOTAL = 10567873 DENSITY 1 = 8516 DENSITY 2 = 87421 TILGHMAN MD. DENSITY 3 = 29270 VIMS CHART # 043 DENSITY 4 = 68303 TOTAL - 193510 MT. VERNON VA.-MD. VIMS CHART # 040 TILGHMAN MD. (continued) QUANTICO VA.-MD. VIMS CHART # 043 VIMS CHART # 047 TOTAL AREA TOTAL AREA ------DENSITY 1 = 147630 DENSITY 1 = 58330 DENSITY 2 = 183760 DENSITY 2 = 414993 DENSITY 3 = 33940 DENSITY 3 = 179223 DENSITY 4 = 97350 DENSITY 4 = 201916 TOTAL - 462680 TOTAL - 854462 INDIAN HEAD MD.-VA. OXFORD MD. VIMS CHART # 048 VIMS CHART # 044 TOTAL AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 55139 DENSITY 4 = 0 TOTAL - 55139 TOTAL AREA DENSITY 1 = 12825 DENSITY 2 = 57353 DENSITY 3 = 41834 DENSITY 4 = 63890 TOTAL - 175902 BENEDICT MD. HUDSON MD. (continued) VIMS CHART # 049 VIMS CHART # 051 TOTAL AREA TOTAL AREA ------.,.----- DENSITY 1 = DENSITY 1 = 0 DENSITY 2 = DENSITY 2 = 310136 DENSITY 3 = DENSITY 3 = 542851 DENSITY 4 = DENSITY 4 = 824420 TOTAL - TOTAL - 1677407 HUDSON MD. CHURCH CREEK MD. VIMS CHART # 051 VIMS CHART # 052 TOTAL------AREA DENSITY 1 = 282000 DENSITY 2 = 27451 DENSITY 3 = 154870 DENSITY 4 = 30264 TOTAL - 494585 WIDEWATER VA.-MD. NANJEMOY MD. (Continued) VIMS CHART # 055 VIMS CHART # 056 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 50230 TOTAL AREA DENSITY 3 = 71970 ------DENSITY 4 = 962309 DENSITY 1 = 8089 DENSITY 2 = 102994 TOTAL - 1084509 DENSITY 3 = 72390 DENSITY 4 = 208190 MATHIAS POINT MD.-VA. VIMS CHART # 057 TOTAL - 391663 NANJEMOY MD. VIMS CHART # 056 MATHIAS POINT MD.-VA. BROOMES ISLAND MD. VIMS CHART # 057 (Continued) VIMS CHART # 060 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 146187 DENSITY 3 = 55853 DENSITY 4 = 0 TOTAL - 202040 TOTAL AREA ------COVE POINT MD. DENSITY 1 = 100270 VIMS CHART # 061 DENSITY 2 = 202605 DENSITY 3 = 290345 DENSITY 4 = 2248609 TOTAL - 2841829 MECHANICSVILLE MD. TOTAL AREA VIMS CHART # 059 DENSITY 1 = 0 DENSITY 2 = 31230 DENSITY 3 = 7992 TOTAL------AREA DENSITY 4 = 6984 DENSITY 1 = 0 TOTAL - 46206 DENSITY 2 = 20780 DENSITY 3 = 0 DENSITY 4 = 0 TOTAL - 20780 TAYLORS ISLAND MD. KING GEORGE VA.-MD. VIMS CHART # 062 VIMS CHART # 065 TOTAL------AREA TOTAL AREA DENSITY 1 = 3694 ------DENSITY 2 = 34889 DENSITY 1 = 61650 DENSITY 3 = 16170 DENSITY 2 = 38386 DENSITY 4 = 106200 DENSITY 3 = 342647 DENSITY 4 = 32020 TOTAL - 160953 TOTAL - 474703 DAHLGREN VA .-MD . VIMS CHART # 066 GOLDEN HILL MD. VIMS CHART # 063 TOTAL------AREA TOTAL------AREA DENSITY 1 = DENSITY 1 = 11390 DENSITY 2 = DENSITY 2 = 11310 DENSITY 3 = DENSITY 3 = 0 DENSITY 4 = DENSITY 4 = 120180 TOTAL - TOTAL - 142880 COLONIAL BEACH NORTH, VA. ,-MD. SOLOMONS ISLAND MD. VIMS CHART # 067 VIMS CHART # 071 AA3 83330 TOTAL AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 83330 DENSITY 4 = 0 TOTAL - 83330 BARREN ISLAND MD. TOTAL------AREA VIMS CHART # 072 DENSITY 1 = 0 DENSITY 2 = 31824 DENSITY 3 = 129380 DENSITY 4 = 16657 TOTAL - 177861 HOLLYWOOD MD . VIMS CHART # 070 TOTAL AREA ------TOTAL AREA DENSITY 1 = 0 ------DENSITY 2 = 18814 DENSITY 1 = 294121 DENSITY 3 = 22230 DENSITY 2 = 69600 DENSITY 4 = 8696 DENSITY 3 = 28084 DENSITY 4 = 2306335 TOTAL - 49740 TOTAL - 2698140 HONGA MD. HONGA MD. (continued) VIMS CHART # 073 VIMS CHART # 073 AAl BA4 CAI DA4 EA4 FA4 GA1 HA3 IA1 JA4 KA2 LA2 MA4 NA4 OAl PA4 QAl RA3 SA3 TA3 UA4 VA2 TOTAL AREA WA1 XA3 DENSITY 1 = 1713890 YA3 DENSITY 2 = 1096969 ZA2 DENSITY 3 = 1356291 AB2 DENSITY 4 = 2153286 BB2 CB3 TOTAL - 6320436 DB2 EB3 WINGATE MD. FB3 VIMS CHART # 074 GB2 HB3 AA4 IB2 BA3 JB2 CA3 KB4 DA4 LB1 EA2 MB4 FA2 NB2 GA4 OB3 HA3 PB2 IA1 QB3 JA3 RB1 KA3 SB3 LA3 TB4 MA2 UB4 NA4 VB2 OAl WB1 PA3 WINGATE MD. RICHLAND POINT MD. VIMS CHART # 074 VIMS CHART # 082 TOTAL------AREA TOTAL------AREA DENSITY 1 = 97252 DENSITY 1 = 5982 DENSITY 2 = 185677 DENSITY 2 = 27270 DENSITY 3 = 338573 DENSITY 3 = 350810 DENSITY 4 = 1098203 DENSITY 4 = 40520 TOTAL - 1719705 TOTAL - 424582 ST. MARY ' S CITY MD. BLOODSWORTH ISLAND MD. VIMS CHART # 080 VIMS CHART # 083 AA2 BA3 CA4 DA3 EA2 FA4 GA1 HA4 IA1 TOTAL AREA JA4 ------KA2 DENSITY 1 = 4472 LA4 DENSITY 2 = 10331 MA2 DENSITY 3 = 70771 NA4 DENSITY 4 = 19260 OAl PA4 TOTAL - 104834 QA4 RA2 SA4 TA4 VA4 WA4 XA4 YA1 ZA4 AB4 BB4 CB3 DB3 EB4 FB4 BLOODSWORTH ISLAND MD. MONIE MD. VIMS CHART # 083 (continued) VIMS CHART # 085 TOTAL------AREA DENSITY 1 = TOTAL AREA DENSITY 2 = ------DENSITY 3 = DENSITY 1 = DENSITY 4 = DENSITY 2 = DENSITY 3 = TOTAL - DENSITY 4 = DEAL ISLAND MD. TOTAL - 245963 VIMS CHART # 084 ST. GEORGE ISLAND MD.-VA. VIMS CHART # 089 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 56480 DENSITY 3 = 837 DENSITY 4 = 0 TOTAL - 57317 TOTAL AREA ------KEDGES STRAITS MD. DENSITY 1 = 42940 VIMS CHART # 091 DENSITY 2 = 31520 DENSITY 3 = 471404 DENSITY 4 = 56500 TOTAL - 602364 KEDGES STRAITS MD . (conti:nued) MARION MD. (continued) VIMS CHART # 091 VIMS CHART # 093 TOTAL------AREA DENSITY 1 = 129930 DENSITY 2 = 72590 DENSITY 3 = 2029490 DENSITY 4 = 4701676 TOTAL - 6933686 TERRAPIN SAND POINT MD. VIMS CHART # 092 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 46960 DENSITY 4 = 885680 TOTAL - 932640 MARION MD. TOTAL AREA VIMS CHART # 093 ------DENSITY 1 = DENSITY 2 = DENSITY 3 = DENSITY 4 = TOTAL - EWELL MD.-VA. GREAT FOX ISLAND MD.-VA. VIMS CHART # 099 VIMS CHART # 100 (continued) TOTAL------AREA DENSITY 1 = 121540 DENSITY 2 = 2030100 DENSITY 3 = 132000 DENSITY 4 = 8615874 TOTAL = 10899514 CRISFIELD MD.-VA. VIMS CHART # 101 TOTAL------AREA DENSITY 1 = 9092 DENSITY 2 = 703950 DENSITY 3 = 1255940 DENSITY 4 = 18160356 TOTAL = 20129335 GREAT FOX ISLAND MD.-VA. VIMS CHART # 100 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 230380 DENSITY 3 = 310520 DENSITY 4 = 691350 TOTAL - 1232250 REEDVILLE VA. CHESCONESSEX VA. VIMS CHART # 106 VIMS CHART # 108 AA1 BA1 CA3 DA3 EA4 FA4 GA4 HA1 IA4 JA4 TOTAL AREA LA3 ------MA3 DENSITY 1 = 0 NA4 DENSITY 2 = 406910 OA4 DENSITY 3 = 53240 PA1 DENSITY 4 = 419710 QA4 RA2 TOTAL - 879860 SA1 TA3 TANGIER ISLAND VA. UA1 VIMS CHART # 107 VA4 WA2 XA3 YA2 ZAl AB3 BB3 CB1 DB2 EB2 FB4 GB4 HB3 IB2 TOTAL AREA JB4 ------KB2 DENSITY 1 = 84570 LB3 DENSITY 2 = 1466080 MB3 DENSITY 3 = 312340 KA2 DENSITY 4 = 3128500 NB4 - 4991490 TOTAL - TOTAL------AREA DENSITY 1 = DENSITY 2 = DENSITY 3 = DENSITY 4 = TOTAL - PARKSLEY VA. IRVINGTON VA. VIMS CHART # VIMS CHART # 111 TOTAL------AREA DENSITY 1 = DENSITY 2 = DENSITY 3 = DENSITY 4 = TOTAL - URBANNA VA. VIMS CHART # TOTAL------AREA DENSITY 1 = 41150 DENSITY 2 = 71327 DENSITY 3 = 694647 DENSITY 4 = 166330 TOTAL - 973454 FLEETS BAY VA. VIMS CHART # 112 TOTAL------AREA DENSITY 1 = DENSITY 2 = DENSITY 3 = DENSITY 4 = TOTAL - FLEETS BAY VA. (continued) PUNGOTEAGUE VA. VIMS CHART # 112 VIMS CHART # 114 NA2 AA3 OA2 BA4 PA3 CA4 QA2 DA3 RA2 EA4 SA2 FA2 TA3 GA3 UA2 HA4 VA3 IA1 WA2 JA3 XA2 KA1 YA2 LA3 ZA2 MA3 AB2 NA2 BB2 OAl CB1 PA3 TOTAL AREA QA2 ------RA2 DENSITY 1 = SA2 DENSITY 2 = TA1 DENSITY 3 = UA4 DENSITY 4 = VA2 WA3 TOTAL - XA3 YA4 NANDUA CREEK ZA4 VIMS CHART # AB2 BB1 CB4 DB3 EB3 FB3 TOTAL------AREA DENSITY 1 = DENSITY 2 = DENSITY 3 = DENSITY 4 = TOTAL - TOTAL------AREA DENSITY 1 = DENSITY 2 = DENSITY 3 = DENSITY 4 = TOTAL - WILTON VA. JAMESVILLE VA. VIMS CHART # 117 VIMS CHART # 119 TOTAL------AREA DENSITY 1 = 67220 DENSITY 2 = 94980 DENSITY 3 = 105291 DENSITY 4 = 0 TOTAL - 267491 DELTAVILLE VA. VIMS CHART # 118 TOTAL------AREA DENSITY 1 = 181710 DENSITY 2 = 2329640 DENSITY 3 = 513140 DENSITY 4 = 1170820 TOTAL - 4195310 WARE NECK VA. VIMS CHART # 122 TOTAL------AREA DENSITY 1 = 91680 DENSITY 2 = 57978 DENSITY 3 = 0 DENSITY 4 = 39163 TOTAL - 188821 WARE NECK VA. (continued) MATHEWS VA. (continued) VIMS CHART # 122 VIMS CHART # 123 TOTAL------AREA DENSITY 1 = 114050 DENSITY 2 = 101391 DENSITY 3 = 123790 DENSITY 4 = 241612 TOTAL - 580843 TOTAL AREA ------FRANKTOWN VA . DENSITY 1 = 133584 VIMS CHART # 124 DENSITY 2 = 1177153 DENSITY 3 = 497718 DENSITY 4 = 134720 TOTAL - 1943175 MATHEWS VA. VIMS CHART # 123 FRANKTOWN VA . ( Continued) ACHILLES VA. (continued) VIMs CHART % 124 VIM CHART # 131 TOTAL------AREA DENSITY 1 = 169693 DENSITY 2 = 479560 DENSITY 3 = 1571384 DENSITY 4 = 1706368 TOTAL - 3927005 ACHILLES VA. VIE CHART # 131 TOTAL------AREA DENSITY 1 = 689710 DENSITY 2 = 1936180 DENSITY 3 = 1617020 DENSITY 4 = 3311157 TOTAL - 7554067 NEW POINT COMFORT VA. VIMs CHART # 132 NEW POINT COMFORT VA. CHERITON VA. VIMS CHART # 132 VIMS CHART # 134 TOTAL------AREA DENSITY 1 = 116900 DENSITY 2 = 92850 DENSITY 3 = 0 DENSITY 4 = 525300 TOTAL - 735050 YORKTOWN VA. VIMS CHART # 139 TOTAL AREA DENSITY 1 = 957810 DENSITY 2 = 3830900 DENSITY 3 = 1138830 TOTAL AREA DENSITY 4 = 4561320 DENSITY 1 = 0 TOTAL = 10488859 DENSITY 2 = 3639 DENSITY 3 = 6137 CAPE CHARLES VA. DENSITY 4 = 0 VIMS CHART # '133 TOTAL - 9776 POQUOSON WEST VA. VIMS CHART # 140 TOTAL------AREA DENSITY 1 = 647000 DENSITY 2 = 209000 DENSITY 3 = 1073800 DENSITY 4 = 734383 TOTAL - 2664183 POQUOSON WEST VA. ELLIOTTS CREEK VA. VIMS CHART # 140 VIMS CHART # 142 TOTAL------AREA DENSITY 1 = 73750 TOTAL AREA DENSITY 2 = 0 ------DENSITY 3 = 20550 DENSITY 1 = 519480 DENSITY 4 = 0 DENSITY 2 = 708321 DENSITY 3 = 718760 TOTAL - 94300 DENSITY 4 = 958766 TOWNSEND VA. TOTAL - 2905327 VIMS CHART # 143 POQUOSON EAST VA. VIMS CHART # 141 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 119663 DENSITY 4 = 0 TOTAL - 119663 TOTAL AREA DENSITY 1 = 136630 DENSITY 2 = 1323210 DENSITY 3 = 1226950 DENSITY 4 = 4837370 TOTAL - 7524160 HAMPTON VA. PORT TOBACCO MD. VIMS CHART # 147 VIMS CHART # 161 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 5557 DENSITY 3 = 3311 DENSITY 4 = 47513 TOTAL AREA ------TOTAL - 56381 DENSITY 1 = 86680 DENSITY 2 = 241700 BERLIN MD. DENSITY 3 = 178100 VIMS CHART # 167 DENSITY 4 = 2333388 TOTAL - 2839868 CAPE HENRY VA. TOTAL AREA VIMS CHART # 152 DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 63960 DENSITY 4 = 6604 TOTAL - 70564 OCEAN CITY MD. TOTAL------AREA VIMS CHART # 168 DENSITY 1 = 0 DENSITY 2 = 227730 DENSITY 3 = 177310 DENSITY 4 = 0 TOTAL------AREA TOTAL - 405040 DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 80540 DENSITY 4 = 3611 TOTAL - 84151 TINGLES ISLAND MD. WHITTINGTON POINT MD.-VA. VIMS CHART # 170 VIMS CHART # 173 TOTAL------AREA TOTAL AREA DENSITY 1 = 0 ------DENSITY 2 = 0 DENSITY 1 = 0 DENSITY 3 = 97730 DENSITY 2 = 0 DENSITY 4 = 1981290 DENSITY 3 = 9614800 DENSITY 4 = 591200 TOTAL - 2079020 TOTAL = 10205999 CHINCOTEAGUE EAST VA. VIMS CHART # 175 BOXIRON MD.-VA. VIMS CHART # 172 TOTAL------AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 4010000 DENSITY 4 = 0 TOTAL - 4010000 TOTAL AREA DENSITY 1 = 0 DENSITY 2 = 0 DENSITY 3 = 5240990 DENSITY 4 = 1408390 TOTAL - 6649380 >"#<'< sm, PEO a w-3a-VA