APPENDIX B USGS 7.5 Minute Quadrangles for Chesapeake Bay and the Delmarva Peninsula Coastal Bays Showing Distribution, Abundance, and Groundtruthing of SAV in 1998 Boundaries of individual SAV beds are delineated by solid lines and SAV beds are shaded. Each bed is identified with a unique one or two letter label (A-Z, AA-ZA, AB-ZB, etc.) and single number density designation (1-4). These density numbers represent the classification discussed in the text and Figure 9, i.e., 1 = <10%; 2 = 10-40%; 3 = 40-70%; 4 = 70-100%. Ground survey observations are represented by symbols and species codes, which are explained in the legend. Chesapeake Bay Program and Delmarva Peninsula coastal bay segments are identified on the maps with gray labels and delineated by dashed lines. 157
Appendix B 1998 SAV Key for 1998 SAV Maps SPECIES Zm Zostera marina (eelgrass) Rm Ruppia maritima (widgeon grass) SURVEY STATIONS Citizens Field Observation Army Corps of Engineers C Cd Cl Ec Ed Hd Hv Ms N Nfl Chara sp. (muskgrass) Ceratophyllum demersum (coontail) Callitriche sp. (water starwort) Elodea canadensis (common elodea) Egeria densa (water weed) Heteranthera dubia (water stargrass) Hydrilla verticillata (hydrilla) Myriophyllum spicatum (Eurasian watermilfoil) Najas sp. (naiad) Najas flexilis (northern naiad) Aberdeen Proving Ground (USAEC/ARL) University of Maryland U.S. Environmental Protection Agency Harford Community College Md. Dept. of Natural Resources Naval Air Station Patuxent River National Oceanographic Atmospheric Adminstration National Park Service Patuxent River Park Patuxent Wildlife Research Center Ngr Najas gracillima (slender naiad) Ngu Najas guadalupensis (southern naiad) Nm Najas minor Salisbury State University U.S. Fish and Wildlife Service Nt Nitella sp. (muskgrass) VIMS Field Survey Pcr Potamogeton crispus (curly pondweed) Virginia Marine Resources Commission Pe Potamogeton epihydrus (leafy pondweed) Pn Potamogeton nodosus (American pondweed) Ppc Potamogeton pectinatus (sago pondweed) Ppf Potamogeton perfoliatus (redhead grass) Ppu Potamogeton pusillus (slender pondweed) S Sparganium sp. (bureed) Tn Trapa natans (water chestnut) Va Vallisneria americana (wild celery) Zp Zannichellia palustris (horned pondweed) U Unidentified species composition 1998 SAV Beds SAV Bed Labels A,B,C,...,AA,BA,CA,... 1 = 0 10% density 2 = 10 40% density 3 = 40 70% density 4 = 70 100% density 158
Bay 1998 SAV Appendix B Rappahannock River 211 James River 206 205 207 204 047 055 064 039 Patapsco River Patuxent River Potomac River York River Susquehanna River Chesapeake 002 006 007 008 003 004 005 009 010 011 024 029 158 028 031 033 181 030 032 034 176 036 035 037 180 038 160 159 040 041 042 161 050 048 051 049 056 057 058 162 060 061 059 062 065 230 208 125 203 066 200 225 228 209 201 126 067 076 135 136 086 077 094 095 226 229 103 227 210 120 127 128 137 068 115 069 087 197 104 070 071 079 080 096 088 072 081 089 090 097 098 044 045 063 082 053 074 084 091 092 099 100 Chester River 054 Choptank River 163 164 183 105 194 179 107 108 116 117 121 195 122 129 144 078 138 012 013 014 015 016 017 020 021 022 193 019 018 023 025 026 027 139 140 145 148 110 130 131 146 111 149 106 113 118 119 123 132 178 177 133 141 142 147 043 112 150 073 182 151 052 083 152 134 143 186 046 075 124 199 192 190 191 189 188 102 101 217 114 187 216 212 215 213 Nanticoke River 202 198 Magothy Bay Fishermans Island Atlantic Ocean Delaware Bay Assawoman Bay 165 Isle of 166 Wight Bay Sinepuxent 167 168 Bay Delmarva Peninsula 085 196 169 170 184 093 214 109 171 219 220 218 174 172 175 173 Chincoteague Bay 39 30 00" 39 00 00" 38 30 00" 38 00 00" 37 30 00" 37 00 00" 153 185 154 155 221 156 157 222 223 77 30 00" 77 00 00" 76 30 00" 76 00 00" 75 30 00" 75 00 00" 10 0 10 20 30 40 50 Kilometers Location of USGS 7.5 minute quadrangles in Chesapeake Bay, its tributaries, and in the Delmarva Peninsula coastal bays with corresponding code numbers. (See Table 2 for quad names.) 159
Appendix B 1998 SAV 160
Aberdeen, Md. (002) Hectares of SAV: 16.38 Date Flown: 09/12 161
(003) Havre de Grace, Md. Hectares of SAV: 2,141.24 Date Flown: 08/01, 09/12, 10/17 162
North East, Md. (004) Hectares of SAV: 118.90 Date Flown: 09/12 163
(005) Elkton, Md. Del. Hectares of SAV: 20.60 Date Flown: 09/12 164
White Marsh, Md. (006) Hectares of SAV: 0.32 Date Flown: 08/01 165
(007) Edgewood, Md. Hectares of SAV: 145.62 Date Flown: 08/01 166
Perryman, Md. (008) Hectares of SAV: 24.66 Date Flown: 08/01 167
(009) Spesutie, Md. Hectares of SAV: 117.86 Date Flown: 08/01, 09/12 168
Earleville, Md. (010) Hectares of SAV: 157.43 Date Flown: 09/12 169
(013) Middle River, Md. Hectares of SAV: 16.59 Date Flown: 08/01 170
Gunpowder Neck, Md. (014) Hectares of SAV: 821.81 Date Flown: 08/01, 08/02, 09/12 171
(015) Hanesville, Md. Hectares of SAV: 24.02 Date Flown: 08/01 172
Betterton, Md. (016) Hectares of SAV: 71.91 Date Flown: 08/01 173
(017) Galena, Md. Hectares of SAV: 6.24 Date Flown: 08/01 174
Curtis Bay, Md. (018) Hectares of SAV: 0.00 Date Flown: 08/04 175
(019) Sparrows Point, Md. Hectares of SAV: 14.37 Date Flown: 08/01 176
Swan Point, Md. (020) Hectares of SAV: 40.32 Date Flown: 08/01 177
(021) Rock Hall, Md. Hectares of SAV: 52.05 Date Flown: 08/01, 08/02 178
Chestertown, Md. (022) Hectares of SAV: 0.00 Date Flown: 09/12 179
(023) Round Bay, Md. Hectares of SAV: 169.33 Date Flown: 08/04, 09/05 180
Gibson Island, Md. (024) Hectares of SAV: 79.95 Date Flown: 08/02, 08/04 181
(026) Langford Creek, Md. Hectares of SAV: 497.98 Date Flown: 07/21, 09/12, 08/01 182
Centreville, Md. (027) Hectares of SAV: 2.87 Date Flown: 09/12 183
(028) Washington West, Md. D.C. Va Hectares of SAV: 0.00 Date Flown: 08/20 184
South River, Md. (030) Hectares of SAV: 22.00 Date Flown: 08/04 185
(031) Annapolis, Md. Hectares of SAV: 0.00 Date Flown: 08/04 186
Kent Island, Md. (032) Hectares of SAV: 492.55 Date Flown: 07/21 187
(033) Queenstown, Md. Hectares of SAV: 533.25 Date Flown: 07/21 188
Alexandria, Va. D.C. Md. (034) Hectares of SAV: 439.02 Date Flown: 09/24, 08/20 189
(035) Deale, Md. Hectares of SAV: 3.21 Date Flown: 08/04, 09/05 190
Claiborne, Md. (036) Hectares of SAV: 533.85 Date Flown: 07/21 191
(037) St. Michaels, Md. Hectares of SAV: 320.75 Date Flown: 07/21 192
Easton, Md. (038) Hectares of SAV: 12.53 Date Flown: 07/21 193
(039) Fort Belvoir, Va. Md. Hectares of SAV: 158.55 Date Flown: 08/20 194
Mt. Vernon, Md. Va. (040) Hectares of SAV: 316.86 Date Flown: 08/20 195
(041) Lower Marlboro, Md. Hectares of SAV: 77.42 Date Flown: 07/21 196
Tilghman, Md. (043) Hectares of SAV: 397.81 Date Flown: 07/21 197
(044) Oxford, Md. Hectares of SAV: 671.03 Date Flown: 07/21 198
Trappe, Md. (045) Hectares of SAV: 40.36 Date Flown: 07/21 199
(046) Preston, Md. Hectares of SAV: 0.00 Date Flown: 08/04 200
Quantico, Va. Md. (047) Hectares of SAV: 324.37 Date Flown: 08/20, 09/24 201
(048) Indian Head, Va. Md. Hectares of SAV: 264.35 Date Flown: 08/20, 09/24 202
Benedict, Md. (049) Hectares of SAV: 0.00 Date Flown: 07/21 203
(050) Prince Frederick, Md. Hectares of SAV: 0.00 Date Flown: Not Flown 204