20210412
11333400
1.0
FGDC CSDGM Metadata
FALSE
va_aus_estuarine_2020_final_wm
002
-8624071.882700
-8369774.207900
4376618.056400
4699494.263000
1
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_Web_Mercator_Auxiliary_Sphere
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.8'><WKT>PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>10000</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>2</ZTolerance><MTolerance>2</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem>
20220809
08520000
20220809
08520000
150000000
5000
FGDC
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.0.12790
va_aus_estuarine_2020_final_wm
Estuaries (2020 Final WQA IR Assessment)
1
-77.471356
-75.186961
38.845006
36.550370
2020 Final 305(b)/303(d) Assessment Unit GIS dataset. Biennially, DEQ must produce a Water Quality Assessment Integrated Report (IR) on the surface waters within the state’s jurisdiction as mandated by the Clean Water Act (CWA) sections 303(d), 305(b), and 314 and the state’s Water Quality Monitoring, Information, and Restoration Act (WQMIRA). This geographic layer is a component of the process to produce the statistics and maps shown in the IR. Data from DEQ and non-DEQ contributors collected from Jan. 1 2013 through Dec. 31 2018 was used to characterize each applicable Assessment Unit (AU) within the Commonwealth. Virginia reports on three basic water types for the IR; rivers and streams, lakes and reservoirs, and estuaries.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-weight:bold;"><SPAN>Display and define all surface waters identified within the 2020 305(b)/303(d) Water Quality Assessment Integrated Report. </SPAN></SPAN><SPAN><SPAN>The Assessment Unit (AU) dataset was created from United States Geological Survey (USGS) National Hydrography Dataset (NHD) high-resolution 1:24,000 data extracted in September 2012. The NHD product was used by DEQ regional assessment staff to assign previously established assessment unit IDs based on predetermined up- and downstream extents and applicable Water Quality Standards. Some erroneous waters were removed and a few waters were corrected for spatial accuracy using Virginia Base Mapping Program aerial photography from Virginia Geographic Information Network (VGIN), and recent NHD data where available.</SPAN></SPAN></P><P /><P><SPAN><SPAN>There are 3 feature classes within the geodatabase:</SPAN></SPAN></P><P><SPAN><SPAN>va_aus_estuarine – estuarine waters within the commonwealth, including the Chesapeake Bay and tidal tributaries to the Bay</SPAN></SPAN></P><P><SPAN><SPAN>va_aus_reservoir – lakes and reservoirs with Water Quality Standards or those monitored within the commonwealth; see appendix 7 of the IR for a complete list</SPAN></SPAN></P><P><SPAN><SPAN>va_aus_riverine – free flowing surface waters within the commonwealth </SPAN></SPAN></P><P /><P><SPAN><SPAN>This data constitutes the United States Environmental Protection Agency (EPA) approved version of the assessment unit hydrology for Virginia. Attributes assigned to each water segment are based on details associated with the ID305B (assessment unit ID) from the statewide water quality assessment database (ADB) (ADB is deprecated as of the 2020 cycle). Data validations are performed on the data prior to linking attributes to the GIS data, however errors may still occur.</SPAN></SPAN></P><P /><P><SPAN><SPAN>Additionally, a summary dataset of water quality monitoring stations (va_20ir_wqms) which includes DEQ and non-DEQ data is generated to supplement this AU data.</SPAN></SPAN></P><P /><P><SPAN><SPAN>Please direct any questions about attribute accuracy to the Data Contact.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>This geographic information system (GIS) data is made available as a public service.</SPAN></SPAN><SPAN STYLE="font-weight:bold;"><SPAN>This dataset is to be used for reference purposes only and Virginia Department of Environmental Quality, is not responsible for any inaccuracies herein contained</SPAN></SPAN><SPAN><SPAN>. No responsibility is assumed for damages or other liabilities due to the accuracy, availability, use or misuse of the information herein provided. GIS information is in the public domain and may be copied without permission; citation of the source is suggested.</SPAN></SPAN></P><P><SPAN><SPAN>The information contained within this geospatial dataset is for reference purposes only and is </SPAN></SPAN><SPAN STYLE="font-weight:bold;"><SPAN>not</SPAN></SPAN><SPAN><SPAN>to be construed or used as a "legal description” or for legal purposes. This information is believed to be accurate, but accuracy is not guaranteed. Information drawn from this dataset must be used in consultation with appropriate federal, state, or local resource management officials</SPAN></SPAN><SPAN><SPAN>. </SPAN></SPAN><SPAN><SPAN>Any errors or omissions should be reported to Virginia Department of Environmental Quality</SPAN></SPAN></P><P><SPAN STYLE="font-weight:bold;font-size:12pt"><SPAN>Line work and attributes should not be altered except by the developer (DEQ).</SPAN></SPAN><SPAN STYLE="font-size:12pt"><SPAN>Crediting the Virginia Department of Environmental Quality as data source is requested. This data may be shared with others.</SPAN></SPAN></P></DIV></DIV></DIV>
Virginia Department of Environmental Quality, Office of Ecology, Water Monitoring & Assessment Program
WQA
Water Quality Assessment
Integrated report
2020
Estuaries
Estuarine
Cleo L. Baker
Virginia Department of Environmental Quality
1111 East Main Street
Richmond
Virginia
23219
cleo.baker@deq.virginia.gov
804-698-4191
https://apps.deq.virginia.gov/arcgis/rest/services/public/EDMA/MapServer/172
https://apps.deq.virginia.gov/mapper_ext/GIS_Datasets/WQA_2020_Final.zip
File Geodatabase Feature Class
dataset
EPSG
8.8(9.3.1.2)
1411
Simple
FALSE
1411
TRUE
FALSE
va_aus_estuarine_2020_final_wm
Feature Class
1411
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
ID305B
Assessment Unit ID
String
50
0
0
SQ_MILES
Sq_Miles
Double
8
0
0
CYCLE
Cycle
String
4
0
0
WATER_NAME
Water Name
String
100
0
0
LOCATION
Location
String
255
0
0
CATEGORY
Category
String
10
0
0
AU_COMMENTS
AU Comments
String
1073741822
0
0
IMP_CAUSE
Impairment Cause(s)
String
1073741822
0
0
SOURCE
Source(s)
String
1073741822
0
0
AQUA_LIFE
Aquatic Life
String
35
0
0
DEEP_CHANN
Deep Channel
String
35
0
0
DEEP_WATER
Deep Water
String
35
0
0
FISH_CONSU
Fish Consumption
String
35
0
0
MIGRATORY
Migratory
String
35
0
0
OPEN_WATER
Open Water
String
35
0
0
PWS
Public Water Supply
String
35
0
0
RECREATION
Recreation
String
35
0
0
SHELLFISH
Shellfishing
String
35
0
0
SW_SAV
Shallow Water SAV
String
35
0
0
WILDLIFE
Wildlife
String
35
0
0
SHAPE
SHAPE
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
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.
definition
definition
String
700
0
0
CatOrigin
CategoryOrigin
String
50
0
0
Assessment
Assessment
String
50
0
0
AssessDef
AssessmentDefinition
String
100
0
0
Field Name Field Alias Field Summary
OBJECTID Auto-generated number assigned to each feature
Shape Feature geometry type
ID305B Assessment Unit ID Unique alpha-numeric assessment unit identification code
Miles / Acres / Sq_miles Miles / Acres / Sq_miles Water size for the specific feature class type calculated in map units; rivers = Miles; reservoirs = Acres; estuaries = Sq_miles
CYCLE Cycle Current assessment reporting cycle; 2020
WATER_NAME Water Name Name of the water body
LOCATION Location Description of the location extent of the segment of water
CATEGORY Category Virginia or EPA assessment category representing the overall characterization of the water as defined in 2020 Assessment Guidance ranging from category 1 through 5R
AU_COMMENTS AU Comments Assessment Unit comments IMP_CAUSE Impairment Cause(s) Cause(s) of impairment to the water body
SOURCE Source(s) Suspected or confirmed sources attributed to the impairment cause(s)
AQUA_LIFE Aquatic Life Assessment status of the Aquatic Life Designated Use
DEEP_CHANN Deep Channel Assessment status of the Deep Channel (Aquatic Life) Designated Sub-Use, where applicable
DEEP_WATER Deep Water Assessment status of the Deep Water (Aquatic Life) Designated Sub-Use, where applicable
FISH_CONSU Fish Consumption Assessment status of the Fish Consumption Designated Use
MIGRATORY Migratory Assessment status of the Migratory Fish Spawning and Nursery (Aquatic Life) Designated Sub-Use, where applicable
OPEN_WATER Open Water Assessment status of the Open Water (Aquatic Life) Designated Sub-Use, where applicable
PWS Public Water Supply Assessment status of the Public Water Supply Designated Use, where applicable
RECREATION Recreation Assessment status of the Recreation Designated Use
SHELLFISH Shellfishing Assessment status of the Shellfishing Designated Use, where applicable
SW_SAV Shallow Water SAV Assessment status of the Shallow Water Submerged Aquatic Vegetation (Aquatic Life) Designated Sub-Use, where applicable
WILDLIFE Wildlife Assessment status of the Wildlife Designated Use
Shape_Length Auto-generated length of the feature in internal units
Shape_Area Auto-generated area of the feature in internal units, except for the riverine feature class where this attribute is not applicable
2020 Final Assessment Units, Virginia Department of Environmental Quality Geospatial Data Fact Sheet
20220809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