20190212
13324900
1.0
FALSE
VA_savDensity_2010_2024_merged_wm
18.373
-8623265.179800
-8378132.109900
4423291.785500
4707668.700400
1
002
Projected
GCS_WGS_1984
WGS_1984_Web_Mercator_Auxiliary_Sphere
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Linear Unit: Meter (1.000000)
20260302
11391100
20260302
11421600
ISO19115_3
FGDC CSDGM Metadata
24000
5000
dataset
Virginia Institute of Marine Science
SAV Data Administrator
804/684-7088
Rt. 1208 Greate Rd.
Gloucester Point
VA
32061
US
savadmin@vims.edu
20260302
ArcGIS Metadata
1.0
File Geodatabase Feature Class
29.210
Virginia SAV Density (2010 - 2024)
2023-12-13
Virginia Institute of Marine Science
vector digital data
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The 2023 distribution of submerged aquatic vegetation (SAV) in Chesapeake Bay and its tributaries was mapped from aerial multispectral digital imagery and satellite imagery. The aerial imagery was acquired between May and October 2023, with a resolution of 24 cm, encompassing 194 flight lines.Due to challenges in acquiring access to the airspace surrounding Washington, DC, imagery for the upper Potomac River was not acquired until September 16th and October 24th, 2023. Unfortunately, SAV in this area began dying off starting in late August and so our imagery did not capture peak biomass of SAV. Neither WorldView or Pleiades satellite imagery was available for the areas in question. NAIP imagery was flown for both Virginia and Maryland in 2023, but it was not captured until October 11th, and so provided no additional information. Satellite imagery from Planet Labs was available, but does not provide high enough resolution for mapping without being used in conjunction with other imagery.</SPAN></P></DIV></DIV></DIV>
The annual SAV aerial photographic monitoring program provides a comprehensive and accurate measure of change in SAV relative abundance that has been used to link improving water quality to increases in bay living resources.
This layer is a composite of SAV data from 2010 to 2024.
SAV Monitoring Program, Virginia Institute of Marine Science
Virginia Institute of Marine Science
SAV Data Administrator
804/684-7088
1370 Greate RD
Gloucester Point
VA
23062
US
savadmin@vims.edu
Chesapeake Bay
Chincoteague Bay
U.S. Postal State Abbreviations
VA
DE
MD
U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of The United States, and associated areas (Federal Information Processing Standard 5-2):Washington ,D. C., National Institute of Standards and Technology.
51
10
24
U.S. Department of Commerce, 1977, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions (Federal Information Processing Standard 10-3):Washington, D.C., National Institute of Standards and Technology.
US
vegetative surface cover
submerged aquatic vegetation
SAV
ISO 19115 Topic Categories
biota
environment
vegetative surface cover
submerged aquatic vegetation
SAV
biota
environment
Chesapeake Bay
Chincoteague Bay
VA
US
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.0.12790
true
-77.588763
-74.999616
39.756832
36.653889
ground condition
2023-05-11
2023-11-02
1
-77.464109
-75.262041
38.902175
36.886454
The density attribute for all beds has been reviewed by an experienced photo-interpreter for correctness and consistency with analysis for prior years.
The density attribute for all beds has been reviewed by an experienced photo-interpreter for correctness and consistency with analysis for prior years.
The GIS data has been cross-checked against data tables and ground observations.
The dataset contains all SAV areas that were identified from the areas flown. Some areas that are presumed to contain no SAV were not flown. Some small beds, particularly along narrow tributaries may not have been distinguishable on the aerial photography. Due to challenges in acquiring access to the airspace surrounding Washington, DC, imagery for the upper Potomac River was not acquired until September 16th and October 24th, 2023. Unfortunately, SAV in this area began dying off starting in late August and so our imagery did not capture peak biomass of SAV. Neither WorldView or Pleiades satellite imagery was available for the areas in question. NAIP imagery was flown for both Virginia and Maryland in 2023, but it was not captured until October 11th, and so provided no additional information. Satellite imagery from Planet Labs was available, but does not provide high enough resolution for mapping without being used in conjunction with other imagery. The area that was not fully mapped in 2023 supported 1,498 hectares of SAV in 2022 (3,703 acres, 4.8% of the Bay total).
Horizontal positional accuracy is based upon orthorectification of scanned aerial photography using USGS digital orthothophoto quadrangles for horizontal control and USGS 30m DEM data as vertical control. Horizontal RMSE for individual flightlines was held to less than four meters.
Horizontal positional accuracy of the imagery is evaluated as part of the orthorectification process throught the use of at least one check point for every two frames.
2023 SAV Aerial multispectral digital imagery Digital images 5/11/2022 - 11/02/2023
24000
2023 SAV Aerial imagery
2023 SAV Aerial imagery
2023-11-01
Aerialphotographics LLC
document
New 2004 Chesapeake Bay Program Segments adjusted to include land areas
New 2004 Chesapeake Bay Program Segments adjusted to include land areas
New 2004 Chesapeake Bay Program Segments adjusted to include land areas
2008-10-06
Virginia Institute of Marine Science
map
GeoEye 1, WorldView 2 and WorldView 3 satellite imagery acquired from Digital Globe through the NGA NextView program,
2023 Auxiliary Imagery
2023 Auxiliary Imagery
State boundaries adjusted to include shore areas
State boundaries adjusted to include shore areas
State boundaries adjusted to include shore areas
2008-10-06
Virginia Instute of Marine Science
map
2023 SAV Orthophoto Mosaics Datasets 5/11/23 - 11/02/2023
24000
2023 SAV Orthophoto Mosaics
2023 SAV Orthophoto Mosaics
2023-11-01
Virginia Institute of Marine Science
document
Digital imagery is georectified and orthographically corrected to produce a seamless series of aerial mosaics following the standard operating procedures (SOP). ERDAS IMAGINE Photogrammetry image processing software is used to orthographically correct the individual flight lines using a bundle block solution. Camera lens calibration data is matched to the image location of fiducial points to define the interior camera model. Control points from USGS DOQQ images, National Agriculture Imagery Program (NAIP), Virginia Base Mapping Program (VBMP), MD Six Inch, and ESRI World imagery provide the exterior control, which is enhanced by a large number of image-matching tie points produced automatically by the software when IMU data were not available. The exterior and interior models are combined with a 10-meter resolution digital elevation model (DEM) from the USGS National Elevation Dataset (NED) to produce an orthophoto for each aerial photograph. The orthophotographs area combined into mosaic datasets for each flightline which are then combined into a single Bay-wide mosaic dataset.
2024-06-17
The SAV beds are interpreted on-screen from the orthophoto mosaics using ESRI ArcGIS software. The identification and delineation of SAV beds by photo interpretation utilizes all available information including: knowledge of aquatic grass signatures on film, distribution of SAV in 2023 from aerial satellite imagery, 2023 ground survey information, and aerial site surveys. National Agricultural Imagery Program (NAIP) aerial imagery, as well as WorldView 2 and 3 satellite imagery acquired from Digital Globe through the NGA NextView program, PlanetScope satellite imagery from Planet Labs was used to augment the aerial imagery in portions of the Bay and tributaries where imagery had not been acquired because of highly turbid water, weather, and security restrictions during the acquisition phase. In addition to delineating SAV bed boundaries, an estimate of SAV density within each bed was made by visually comparing each bed to an enlarged crown density scale similar to those developed for estimating crown cover of forest trees from aerial photography (Paine, 1981). Bed density was categorized into one of four classes based on a subjective comparison with the density scale. These were: 1, very sparse (<10% coverage); 2, sparse (10-40%); 3, moderate (40-70%); or 4, dense (70-100%). Either the entire bed or subsections within the bed were assigned a bed density number (1 to 4) corresponding to the above density classes. Some beds were subsectioned to delineate variations of SAV density. Additionally, each distinct SAV bed or bed subsection was assigned an identifying one or two letter designation unique to its map. Coupled with the appropriate SAV quadrangle number and year of photography, these letter designations uniquely identify each SAV bed in the database.
2024-12-19
The bay segments were overlayed on the dataset by VIMS staff, dividing any beds that fell into multiple segments.
2024-12-19
The state boundaries were overlayed on the dataset by VIMS staff, dividing any beds that fell into multiple states.
2024-12-19
38871
EPSG
6.18.3(9.3.1.2)
beds23
VIMS
VIMS - SAV Program
Feature Class
38871
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
ST
U.S. State which contains the SAV bed
US State Abbreviations
MD
Maryland
State Abbreviations
DC
Washington DC
State Abbreviations
DE
Delaware
State Abbreviations
VA
Virginia
State Abbreviations
ST
String
3
0
0
BEDID
Two-letter SAV bed identifier.
VIMS SAV
Labels from "A" to "ZZ"
BEDID
String
2
0
0
QUADID
Identification number of USGS quads that contains the SAV bed
2009 Distribution of SAV in the Chesapeake Bay, Final Report to U.S. EPA, Chesapeake Bay Program
75
Nanticoke, MD.
VIMS SAV
36
Claiborne, MD.
VIMS SAV
88
Kinsale, VA.-MD.
VIMS SAV
74
Wingate, MD.
VIMS SAV
23
Round Bay, MD.
VIMS SAV
93
Marion, MD.
VIMS SAV
6
White Marsh, MD.
VIMS SAV
219
Bloxom, VA.
VIMS SAV
94
Mount Landing, VA.
VIMS SAV
27
Centreville, MD.
VIMS SAV
24
Gibson Island, MD.
VIMS SAV
120
Toano, VA.
VIMS SAV
106
Reedville, VA.
VIMS SAV
130
Clay Bank, VA.
VIMS SAV
142
Elliotts Creek, VA.
VIMS SAV
19
Sparrows Point, MD.
VIMS SAV
26
Langford Creek, MD.
VIMS SAV
184
Cobb Island, VA.
VIMS SAV
113
Nandua Creek, VA.
VIMS SAV
5
Elkton, MD.-DEL.
VIMS SAV
168
Ocean City, MD.
VIMS SAV
53
Cambridge, MD.
VIMS SAV
70
Hollywood, MD.
VIMS SAV
147
Hampton, VA.
VIMS SAV
46
Preston, MD.
VIMS SAV
165
Selbyville, MD.
VIMS SAV
218
Metompkin Inlet, VA.
VIMS SAV
134
Cheriton, VA.
VIMS SAV
22
Chestertown, MD.
VIMS SAV
99
Ewell, MD.-VA.
VIMS SAV
181
Bowie, MD.
VIMS SAV
160
Fowling Creek, MD.
VIMS SAV
131
Achilles, VA.
VIMS SAV
95
Tappahannock, VA.
VIMS SAV
61
Cove Point, MD.
VIMS SAV
55
Widewater, VA.-MD.
VIMS SAV
138
Hog Island, VA.
VIMS SAV
128
Norge, VA.
VIMS SAV
141
Poquoson East, VA.
VIMS SAV
102
Saxis, VA.-MD.
VIMS SAV
159
Bristol, MD.
VIMS SAV
220
Wallops Island, VA.
VIMS SAV
39
Fort Belvoir, VA.-MD.
VIMS SAV
42
North Beach, MD.
VIMS SAV
51
Hudson, MD.
VIMS SAV
129
Williamsburg, VA.
VIMS SAV
79
Piney Point, MD.-VA.
VIMS SAV
217
Accomax, VA.
VIMS SAV
56
Nanjemoy, MD.
VIMS SAV
66
Dahlgren, VA.-MD.
VIMS SAV
170
Tingles Island, MD.
VIMS SAV
107
Tangier Island, VA.
VIMS SAV
37
St. Michaels, MD.
VIMS SAV
85
Monie, MD.
VIMS SAV
15
Hanesville, MD.
VIMS SAV
192
Hobbs, MD.
VIMS SAV
136
Claremont, VA.
VIMS SAV
171
Girdle Tree, MD.-VA.
VIMS SAV
193
Church Hill, MD.
VIMS SAV
216
Wachapreague, VA.
VIMS SAV
235
Montross, VA.
VIMS SAV
121
Gressitt, VA.
VIMS SAV
143
Townsend, VA.
VIMS SAV
185
Suffolk, VA.
VIMS SAV
232
Wachapreague East, VA.
VIMS SAV
69
Leonardtown, MD.
VIMS SAV
189
Eden, MD.
VIMS SAV
82
Richland Point, MD.
VIMS SAV
188
Kingston, MD.
VIMS SAV
227
Truhart, VA.
VIMS SAV
180
Horseshoe Point, MD.
VIMS SAV
234
Snow Hill, MD.
VIMS SAV
135
Savedge, VA.
VIMS SAV
166
Assawoman Bay, MD.
VIMS SAV
126
Charles City, VA.
VIMS SAV
47
Quantico, VA.-MD.
VIMS SAV
233
Aylett, VA.
VIMS SAV
64
Passapatanzy, MD.-VA.
VIMS SAV
29
Washington East, D.C.-MD.
VIMS SAV
231
Port Royal, VA.
VIMS SAV
17
Galena, MD.
VIMS SAV
78
St. Clements Island, VA.-MD.
VIMS SAV
21
Rock Hall, MD.
VIMS SAV
77
Stratford Hall, VA.-MD.
VIMS SAV
223
Pleasant Ridge, VA.
VIMS SAV
8
Perryman, MD.
VIMS SAV
186
Fisherman's Island, VA.
VIMS SAV
60
Broomes Island, MD.
VIMS SAV
105
Lively, VA.
VIMS SAV
173
Whittington Point, MD.-VA.
VIMS SAV
199
Millington, MD.
VIMS SAV
155
Norfolk South, VA.
VIMS SAV
198
Hallwood, VA. - MD.
VIMS SAV
162
Charlotte Hall, MD.
VIMS SAV
203
Diputanta North, VA.
VIMS SAV
31
Annapolis, MD.
VIMS SAV
112
Fleets Bay, VA.
VIMS SAV
80
St. Mary's City, MD.
VIMS SAV
62
Taylors Island, MD.
VIMS SAV
108
Chesconessex, VA.
VIMS SAV
65
King George, VA.-MD.
VIMS SAV
206
Drewrys Bluff, VA.
VIMS SAV
109
Parksley, VA.
VIMS SAV
116
Saluda, VA.
VIMS SAV
172
Boxiron, MD.-VA.
VIMS SAV
182
Smith Point, VA.-MD.
VIMS SAV
40
Mt. Vernon, VA.-MD.
VIMS SAV
43
Tilghman, MD.
VIMS SAV
13
Middle River, MD.
VIMS SAV
90
Point Lookout, MD.
VIMS SAV
86
Champlain, VA.
VIMS SAV
212
Ship Shoal Inlet, VA.
VIMS SAV
208
Roxbury, VA.
VIMS SAV
92
Terrapin Sand Point, MD.
VIMS SAV
187
Exmore, VA.
VIMS SAV
103
Dunnsville, VA.
VIMS SAV
101
Crisfield, MD.-VA.
VIMS SAV
158
Wye Mills, MD.
VIMS SAV
34
Alexandria, VA.-D.C.-MD.
VIMS SAV
197
Haynesville, VA.
VIMS SAV
67
Colonial Beach North, VA.-MD.
VIMS SAV
91
Kedges Straits, MD.
VIMS SAV
204
Hopewell, VA.
VIMS SAV
1
Conowingo Dam, MD.-PA.
VIMS SAV
81
Point No Point, MD.
VIMS SAV
118
Deltaville, VA.
VIMS SAV
38
Easton, MD.
VIMS SAV
215
Quinbly Inlet, VA.
VIMS SAV
209
Providence Forge, VA.
VIMS SAV
87
Machodoc, VA.
VIMS SAV
190
Rhodesdale, MD.
VIMS SAV
167
Berlin, MD.
VIMS SAV
139
Yorktown, VA.
VIMS SAV
201
Loretto, VA.
VIMS SAV
132
New Point Comfort, VA.
VIMS SAV
137
Surry, VA.
VIMS SAV
83
Bloodsworth Island, MD.
VIMS SAV
114
Pungoteague, VA.
VIMS SAV
71
Solomons Island, MD.
VIMS SAV
214
Nassawadox, VA.
VIMS SAV
178
Bethel Beach, VA.
VIMS SAV
10
Earleville, MD.
VIMS SAV
117
Wilton, VA.
VIMS SAV
52
Church Creek, MD.
VIMS SAV
230
Manquin, VA.
VIMS SAV
213
Great Machipongo Inlet, VA.
VIMS SAV
4
North East, MD.
VIMS SAV
123
Mathews, VA.
VIMS SAV
98
Burgess, VA.-MD.
VIMS SAV
35
Deale, MD.
VIMS SAV
229
New Kent, VA.
VIMS SAV
54
East New Market, MD.
VIMS SAV
44
Oxford, MD.
VIMS SAV
148
Benns Church, VA.
VIMS SAV
196
Princess Anne, MD.
VIMS SAV
156
Kempsville, VA.
VIMS SAV
163
Mardela Springs, MD.
VIMS SAV
207
Dutch Gap, VA.
VIMS SAV
176
Anacostia, D.C.-MD.
VIMS SAV
175
Chincoteague East, VA.
VIMS SAV
2
Aberdeen, MD.
VIMS SAV
151
Little Creek, VA.
VIMS SAV
110
Urbanna, VA.
VIMS SAV
144
Bacons Castle, VA.
VIMS SAV
18
Curtis Bay, MD.
VIMS SAV
59
Mechanicsville, MD.
VIMS SAV
127
Brandon, VA.
VIMS SAV
195
Gloucester, VA.
VIMS SAV
3
Havre de Grace, MD.
VIMS SAV
228
Tunstall, VA.
VIMS SAV
211
Richmond, VA.
VIMS SAV
154
Bowers Hill, VA.
VIMS SAV
119
Jamesville, VA.
VIMS SAV
68
Rock Point, MD.
VIMS SAV
111
Irvington, VA.
VIMS SAV
149
Newport News South, VA.
VIMS SAV
12
Baltimore East, MD.
VIMS SAV
145
Mulberry Island, VA.
VIMS SAV
224
Creeds, VA.
VIMS SAV
146
Newport News North, VA.
VIMS SAV
200
Rollins Fork, VA.
VIMS SAV
202
Pocomoke City, MD. - VA.
VIMS SAV
174
Chincoteague West, VA.
VIMS SAV
41
Lower Marlboro, MD.
VIMS SAV
115
West Point, VA.
VIMS SAV
7
Edgewood, MD.
VIMS SAV
20
Swan Point, MD.
VIMS SAV
28
Washington West, MD.-D.C.-VA.
VIMS SAV
89
St. George Island, MD.-VA.
VIMS SAV
9
Spesutie, MD.
VIMS SAV
140
Poquoson West, VA.
VIMS SAV
11
Cecilton, MD.
VIMS SAV
133
Cape Charles, VA.
VIMS SAV
122
Ware Neck, VA.
VIMS SAV
161
Port Tobacco, MD.
VIMS SAV
210
Walkers, VA.
VIMS SAV
153
Chuckatuck, VA.
VIMS SAV
125
Westover, VA.
VIMS SAV
32
Kent Island, MD.
VIMS SAV
100
Great Fox Island, MD.-VA.
VIMS SAV
16
Betterton, MD.
VIMS SAV
73
Honga, MD.
VIMS SAV
150
Norfolk North, VA.
VIMS SAV
58
Popes Creek, MD.
VIMS SAV
226
King & Queen Courthouse, VA.
VIMS SAV
104
Morattico, VA.
VIMS SAV
183
East of Reedville, VA.
VIMS SAV
179
Goose Island, VA.
VIMS SAV
97
Heathsville, VA.-MD.
VIMS SAV
63
Golden Hill, MD.
VIMS SAV
50
Prince Frederick, MD.
VIMS SAV
152
Cape Henry, VA.
VIMS SAV
225
King William, VA.
VIMS SAV
45
Trappe, MD.
VIMS SAV
222
Fentress, VA.
VIMS SAV
194
Lancaster, VA.
VIMS SAV
72
Barren Island, MD.
VIMS SAV
49
Benedict, MD.
VIMS SAV
191
Sharptown, MD.
VIMS SAV
164
Wetipquin, MD.
VIMS SAV
84
Deal Island, MD.
VIMS SAV
221
Deep Creek, VA.
VIMS SAV
157
Princess Anne, VA.
VIMS SAV
169
Public Landing, MD.
VIMS SAV
57
Mathias Point, MD.-VA.
VIMS SAV
205
Chester, VA.
VIMS SAV
33
Queenstown, MD.
VIMS SAV
177
East of New Point, VA.
VIMS SAV
14
Gunpowder Neck, MD.
VIMS SAV
25
Love Point, MD.
VIMS SAV
30
South River, MD.
VIMS SAV
124
Franktown, VA.
VIMS SAV
48
Indian Head, MD.- VA.
VIMS SAV
76
Colonial Beach South, VA.-MD.
VIMS SAV
96
Lottsburg, VA.
VIMS SAV
QUADID
Integer
4
0
0
DENSITY
SAV bed density classification. A ZERO VALUE IN THIS FIELD SIGNIFIES A LAND AREA OR ANY OTHER NON-SAV AREA THAT IS COMPLETELY SURROUNDED BY SAV.THESE POLYGONS SHOULD BE EXCLUDED FROM SAV AREA COMPUTATIONS.
VIMS SAV
3
40 - 70% cover (moderate)
VIMS SAV
0
No SAV
VIMS SAV
4
70 - 100% cover (dense)
VIMS SAV
2
10 - 40% cover (sparse)
VIMS SAV
1
0 - 10% cover (very sparse)
VIMS SAV
DENSITY
Integer
4
0
0
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
Surveyed
Indicates whether the polygon was covered by the annual survey.
VIMS
No
Not included in the area surveyed
VIMS
Yes
Included in the area surveyed
VIMS
P
Area was mapped at less than maximum biomass
VIMS
Surveyed
String
3
0
0
CBPSEG
Chesapeake Bay Program Segment abbreviations ("AAWPH", "IOWPH", "SPXPH","CHNPH", and "SVCPH" have been added to identify the Delmarva coastal bays)
Chesapeake Bay Program
FSBMH
Fishing Bay
EPA Bay Program
CHSOH
Middle Chester River
EPA Bay Program
MAGMH
Magothy River
EPA Bay Program
WBEMH
Western Branch of the Elizabeth River
EPA Bay Program
CHOTF
Upper Choptank River
EPA Bay Program
ELIPH
Lower Elizabeth River
EPA Bay Program
CHKOH
Chickahominy River
EPA Bay Program
PMKTF
Upper Pamunkey River
EPA Bay Program
GUNOH2
Gunpowder River Segment 2
EPA Bay Program
RPPMH
Lower Rappahannock River
EPA Bay Program
WSTMH
West River
EPA Bay Program
PMKOH
Lower Pamunkey River
EPA Bay Program
BSHOH
Bush River
EPA Bay Program
HNGMH
Honga River
EPA Bay Program
AAWPH
Assawoman Bay
EPA Bay Program
SASOH1
Sassafras River Segment 1
EPA Bay Program
POCOH
Middle Pocomoke River
EPA Bay Program
SVCPH
Southern Va. Coastal Bays
EPA Bay Program
PAXMH6
Lower Patuxent River Segment 6
EPA Bay Program
POCMH
Lower Pocomoke River
EPA Bay Program
MANMH1
Manokin River Segment 1
EPA Bay Program
CB4MH
Middle Central Chesapeake Bay
EPA Bay Program
PAXMH1
Lower Patuxent River Segment 1
EPA Bay Program
IOWPH
Isle of Wight Bay
EPA Bay Program
MPNTF
Upper Mattaponi River
EPA Bay Program
TANMH1
Tangier Sound Segment 1
EPA Bay Program
BOHOH
Bohemia River
EPA Bay Program
CB5MH
Lower Central Chesapeake Bay
EPA Bay Program
CHNPH
Chincoteague Bay
EPA Bay Program
CB1TF1
Northern Chesapeake Bay Segment 1
EPA Bay Program
ELKOH1
Elk River Segment 1
EPA Bay Program
SPXPH
Sinepuxent Bay
EPA Bay Program
JMSMH
Lower James River
EPA Bay Program
ELKOH2
Elk River Segment 2
EPA Bay Program
PAXOH
Middle Patuxent River
EPA Bay Program
MATTF
Mattawoman Creek
EPA Bay Program
POTOH3
Middle Potomac River Segment 3
EPA Bay Program
PAXMH3
Lower Patuxent River Segment 3
EPA Bay Program
POTOH2
Middle Potomac River Segment 2
EPA Bay Program
RPPTF
Upper Rappahannock River
EPA Bay Program
PISTF
Piscataway Creek
EPA Bay Program
BACOH
Back River
EPA Bay Program
CRRMH
Corrotoman River
EPA Bay Program
PATMH
Patapsco River
EPA Bay Program
ANATF
Anacostia River
EPA Bay Program
JMSPH
Mouth of the James River
EPA Bay Program
EBEMH
Eastern Branch of the Elizabeth River
EPA Bay Program
C&DOH
Chesapeake & Delaware Canal
EPA Bay Program
POCTF
Upper Pocomoke River
EPA Bay Program
CB2OH
Upper Chesapeake Bay
EPA Bay Program
CB7PH
Eastern Lower Chesapeake Bay
EPA Bay Program
POTOH1
Middle Potomac River Segment 1
EPA Bay Program
RHDMH
Rhode River
EPA Bay Program
PAXTF
Upper Patuxent River
EPA Bay Program
LCHMH
Little Choptank River
EPA Bay Program
MPNOH
Lower Mattaponi River
EPA Bay Program
CHOMH2
Lower Choptank River
EPA Bay Program
LAFMH
Lafayette River
EPA Bay Program
TANMH2
Tangier Sound Segment 2
EPA Bay Program
WBRTF
Western Branch of the Patuxent River
EPA Bay Program
LYNPH
Lynnhaven & Broad Bays
EPA Bay Program
GUNOH1
Gunpowder River Segment 1
EPA Bay Program
YRKMH
Middle York River
EPA Bay Program
PIAMH
Piankatank River
EPA Bay Program
CHOMH1
Mouth of the Choptank River
EPA Bay Program
CB3MH
Upper Central Chesapeake Bay
EPA Bay Program
SASOH2
Sassafras River Segment 2
EPA Bay Program
CB8PH
Mouth of the Chesapeake Bay
EPA Bay Program
POTTF
Upper Potomac River
EPA Bay Program
SEVMH
Severn River
EPA Bay Program
YRKPH
Lower York River
EPA Bay Program
CB1TF2
Northern Chesapeake Bay Segment 2
EPA Bay Program
MIDOH
Middle River
EPA Bay Program
CB6PH
Western Lower Chesapeake Bay
EPA Bay Program
MANMH2
Manokin River Segment 2
EPA Bay Program
APPTF
Appomattox River
EPA Bay Program
MOBPH
Mobjack Bay
EPA Bay Program
JMSTF2
Upper James River Segment 2
EPA Bay Program
RPPOH
Middle Rappahannock River
EPA Bay Program
PAXMH5
Lower Patuxent River Segment 5
EPA Bay Program
CHSMH
Lower Chester River
EPA Bay Program
NANOH
Middle Nanticoke River
EPA Bay Program
CHOOH
Middle Choptank River
EPA Bay Program
WICMH
Wicomico River
EPA Bay Program
JMSOH
Middle James River
EPA Bay Program
JMSTF1
Upper James River Segment 1
EPA Bay Program
PAXMH2
Lower Patuxent River Segment 2
EPA Bay Program
POTMH
Lower Potomac River
EPA Bay Program
SOUMH
South River
EPA Bay Program
PAXMH4
Lower Patuxent River Segment 4
EPA Bay Program
BIGMH1
Big Annemessex River Segment 1
EPA Bay Program
EASMH
Eastern Bay
EPA Bay Program
SBEMH
South Branch of the Elizabeth River
EPA Bay Program
CHSTF
Upper Chester River
EPA Bay Program
NORTF
Northeast River
EPA Bay Program
BIGMH2
Big Annemessex River Segment 2
EPA Bay Program
NANTF
Upper Nanticoke River
EPA Bay Program
NANMH
Lower Nanticoke River
EPA Bay Program
CBPSEG
String
6
0
0
BEDLABEL
The BedID and Density combined
VIMS SAV
A two-letter label and single digit density
BEDLABEL
String
6
0
0
ZONE_
Chesapeake Bay Program Zone
VIMS SAV
3
RPPMH, CRRMH, RPPOH, RPPTF, PIAMH, CB6PH, CB7PH, MOBPH, YRKMH, YRKPH, MPNOH, MPNTF, PMKOH, PMKTF, JMSPH, ELIPH, SBEMH, JMSMH, JMSOH, CHKOH, JMSTF1, JMSTF2, APPTF, LYNPH, CB8PH (Lower Bay)
VIMS SAV
2
SEVMH, SOUMH, RHDMH, WSTMH, EASMH, CB4MH, CHOMH1, CHOMH2, CHOOH, CHOTF, LCHMH, PAXMH1, PAXMH2, PAXMH3, PAXMH4, PAXMH5, PAXMH6, PAXOH, PAXTF, HNGMH, FSBMH, NANMH, NANOH, NANTF, WICMH, MANMH1, MANMH2, BIGMH1, BIGMH2, POCMH, POCOH, POCTF, TANMH1, TANMH2, POTMH, POTOH1, POTOH2, POTOH3, POTTF, MATTF, PISTF, CB5MH (Middle Bay)
VIMS SAV
4
AAWPH, CHNPH, IOWPH, SPXPH, SVCPH (Delmarva Peninsula Coastal Bays)
VIMS SAV
1
CB1TF1,CB1TF2, NORTF, ELKOH1, ELK0H2, C&DOH, BOHOH, SASOH1, SAVOH2, CB2OH, CB3MH, BSHOH, GUNOH1, GUNOH2, MIDOH, BACOH, PATMH,CHSMH, CHSOH, CHSTF, MAGMH (Upper Bay)
VIMS SAV
ZONE_
Integer
4
0
0
sav_hab
sav_hab
String
50
0
0
YEAR
YEAR
SmallInteger
2
0
0
DensityDef
DensityDef
String
50
0
0
Acres
Acres
Double
8
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
Simple
FALSE
38871
TRUE
FALSE
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