20221103
14303600
1.0
FGDC CSDGM Metadata
FALSE
20260611
17185500
002
VA_AUS_RESERVOIRS
-300252.432700
303173.486800
60486.915700
353029.877800
1
0.000
Projected
GCS_NAD_1983_2011
Linear Unit: Meter (1.000000)
NAD_1983_2011_Virginia_Lambert
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20260611
17185500
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Cleo L. Baker
Virginia Department of Environmental Quality
Environmental/GIS Data Specialist Senior
804-698-4191
804-698-4032
P.O. Box 1105
Richmond
Virginia
23218-1105
US
Cleo.Baker@deq.virginia.gov
0700-1630 M-Th and 0700-1100 F (EDT)
Contact via email is preferred.
20260611
ArcGIS Metadata
1.0
Cleo L. Baker
Virginia Department of Environmental Quality
Environmental/GIS Data Specialist Senior
804-698-4191
804-698-4032
P.O. Box 1105
Richmond
Virginia
23218-1105
US
Cleo.Baker@deq.virginia.gov
0700-1630 M-Th and 0700-1100 F (EDT)
Contact via email is preferred.
None
Requests for hardcopy (CD) data should be directed to the Data Distributor.
1-3 days
Personal Geodatabase
ArcGIS 10.1.0.3035
ESRI Personal Geodatabase
final
http://www.deq.virginia.gov/Portals/0/DEQ/Water/WaterQualityAssessments/GISData/ir2016gis.zip
0.000
Feature Class
VA_AUS_RESERVOIRS
2017-12-11
final
Virginia Department of Environmental Quality
vector digital data
Virginia's 2016 305(b) assessed and 303(d) impaired hydrology features
Show all lakes and reservoirs identified in the 2016 Virginia 305(b)/303(d) Water Quality Assessment Integrated Report.
Crediting the Virginia Department of Environmental Quality as data source is requested.
Cleo L. Baker
Virginia Department of Environmental Quality
Environmental/GIS Data Specialist Senior
804-698-4191
804-698-4032
P.O. Box 1105
Richmond
Virginia
23218-1105
US
Cleo.Baker@deq.virginia.gov
0700-1630 M-Th and 0700-1100 F (EDT)
Contact via email is preferred.
Virginia
rivers
assessment units
assessed waters
streams
impaired waters
305(b)
estuaries
reservoirs
303(d)
water quality assessment
lakes
Chesapeake Bay
rivers
assessment units
assessed waters
streams
impaired waters
Virginia
305(b)
estuaries
reservoirs
303(d)
water quality assessment
lakes
Chesapeake Bay
Once EPA approves the 2016 Integrated Report this data is placed within the public domain and as such DEQ assumes no liability for the use of this data. Crediting the Virginia Department of Environmental Quality as data source is requested.
Line work and attributes should not be altered except by the developer (VA DEQ). This dataset constitutes the United States Environmental Protection Agency (US EPA) approved digital version of the assessment hydrology for Virginia.
Esri ArcGIS 13.5.5.57366
-83.675418
-75.175907
36.470396
39.465917
Time period of content
2009-01-01
2014-12-31
This 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 split into regional data layers for regional assessment staff to assign established assessment unit IDs based on predetermined up- and downstream extents. Some erroneous waters were removed and a few waters were corrected for spatial accuracy using Virginia Base Mapping Program orthophotography flown in 2013 thru 2015. Assessment determinations noted in this dataset are based on guidance from Virginia's 2016 Water Quality Assessment Guidance Memo 16-2005 available at http://www.deq.virginia.gov/Portals/0/DEQ/Water/Guidance/162005.pdf. This geodataset has two supplemental GIS data files: the 2016 regionally significant VPDES facilities shapefile (va_16ir_vpdes_facilities.shp) and the 2016 monitoring stations shapefile (va_16ir_wqm_stations.shp).
1
-82.973664
-75.992574
39.180909
36.494966
All arcs and polygons are used to define surface hydrologic features in the state or that VA DEQ is responsible for monitoring and assessment.
At the close of each assessment cycle the dataset is submitted to US EPA for approval whereby it is considered Virginia's completed geospatial data product.
Attributes assigned to each water segment are based on attributes associated with the ID305B (assessment unit ID) entered in the statewide water quality assessment database. QA/QC checks are performed on the database prior to linking attributes to the GIS data, however errors may still occur. Please direct any questions about attribute accuracy to the Data Distributor. The geospatial product is maintained and updated by VA DEQ each assessment cycle (biennially) using the most current NHD product where revisions were made to Virginia waters, the most recent aerial photography provided by the Virginia Geographic Information Network (VGIN), and by freehand digitizing where necessary.
Metadata .txt file revised and converted to .xml using USGS mp compiler for formal metadata and imported into the feature class using Metadata Import utility in ArcCatalog.
Cleo L. Baker
Virginia Department of Environmental Quality
Environmental/GIS Data Specialist Senior
Assessment attributes (i.e. Water Name, Location, Comments, Cause and Source where applicable, Assessment Category, and Designated Use status) for all assessment units joined to each feature based on data queried from the Final 2016 Assessment Database.
Cleo L. Baker
Virginia Department of Environmental Quality
Environmental/GIS Data Specialist Senior
Dataset extracted from versioned environment as personal geodatabases feature classes.
Cleo L. Baker
Virginia Department of Environmental Quality
Environmental/GIS Data Specialist Senior
Removed unnecessary attribute files related to versioned editing (INSERTED_BY, INSERTED_DATE, CHANGED_BY, CHANGED_DATE, VERIFIEDBY, VERIFYDATE, GlobalID) from feature class.
Cleo L. Baker
Virginia Department of Environmental Quality
Environmental/GIS Data Specialist Senior
0
VA_AUS_RESERVOIRS
lakes and reservoirs feature data layer
ESRI
Feature Class
0
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Acres
Area of the segment calculated in acres
VA DEQ
0.195
30665.423
ACRES
Double
8
0
0
ID305B
Unique Virginia assessment unit ID
VA DEQ
Alpha-numeric assessment unit designation for each hydrologic feature
ID305B
String
50
0
0
CYCLE
Assessment cycle
VA DEQ
2016
Assessment reporting cycle within the time period of 1/1/2009 through 12/31/2014
US EPA, VA DEQ
CYCLE
String
4
0
0
Shape
Feature geometry type
ESRI
Polygon
a closed shape of connected coordinate pairs; some features may be multipart polygons
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
WaterName
WaterName
String
255
0
0
AU_Location
AU_Location
String
255
0
0
AU_Category
AU_Category
String
2
0
0
AU_Comment
AU_Comment
String
32767
0
0
Causes
Causes
String
255
0
0
Sources
Sources
String
32767
0
0
Aquatic_Life
Aquatic Life
String
35
0
0
Deep_Channel
Deep-Channel Seasonal Refuge
String
35
0
0
Deep_Water
Deep-Water Aquatic Life
String
35
0
0
Fish_Consumption
Fish Consumption
String
35
0
0
Migratory
Migratory Fish Spawning and Nursery
String
35
0
0
Open_Water
Open-Water Aquatic Life
String
35
0
0
Public_Water_Supply
Public Water Supply
String
35
0
0
Recreation
Recreation
String
35
0
0
Shallow_Water_SAV
Shallow-Water Submerged Aquatic Vegetation
String
35
0
0
Shellfishing
Shellfishing
String
35
0
0
Wildlife
Wildlife
String
35
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.
dataset
EPSG
8.2.10(10.3.1)
Simple
FALSE
0
TRUE
FALSE