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Service Description: 5. The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" “Standard” (http://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU). At a minimum, the HUs are delineated at 1:24,000-scale in the conterminous United States, 1:25,000-scale in Hawaii, Pacific basin and the Caribbean, and 1:63,360-scale in Alaska, meeting the National Map Accuracy Standards (NMAS). Higher resolution boundaries are being developed where partners and data exist and will be incorporated back into the WBD. WBD data are delivered as a dataset of polygons and corresponding lines that define the boundary of the polygon. WBD polygon attributes include hydrologic unit codes (HUC), size (in the form of acres and square kilometers), name, downstream hydrologic unit code, type of watershed, non-contributing areas, and flow modifications. The HUC describes where the unit is in the country and the level of the unit. WBD line attributes contain the highest level of hydrologic unit for each boundary, line source information and flow modifications.
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Has Versioned Data: false
MaxRecordCount: 2000
Supported Query Formats: JSON
Supports Query Data Elements: true
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Service Item Id: 12caeac963014951a27c7a938a61f4eb
Copyright Text: Funding for the Watershed Boundary Dataset (WBD) was provided by the USDA-NRCS, USGS and EPA along with other federal, state and local agencies. Representatives from many agencies contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the WBD Standards. Acknowledgment of the originating agencies would be appreciated in products derived from these data. See dataset specific metadata for further information
Spatial Reference:
102100
(3857)
Initial Extent:
XMin: -1.421144986464101E7
YMin: 3750795.607040068
XMax: -1.2326074544658989E7
YMax: 5279073.349859932
Spatial Reference: 102100
(3857)
Full Extent:
XMin: -1.38631865789E7
YMin: 3716683.1300000027
XMax: -1.2674337830400001E7
YMax: 5313185.826899998
Spatial Reference: 102100
(3857)
Units: esriMeters
Document Info:
Title: Untitled.aprx
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Keywords: 16-digit,Hydrologic Unit Code,Region,US,4-digit,HUC,United States,Watershed Boundary Dataset,2-digit,Basin,10-digit,Hydrologic Units,Sub-basin,Watershed,WBD,6-digit,inlandWaters,Sub-region,Subwatershed,12-digit,14-digit,8-digit,DEA GIS Library
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Supports ApplyEdits With Global Ids: false
Support True Curves : true
Only Allow TrueCurve Updates By TrueCurveClients : false
Supports Return Service Edits Option : true
Supports Dynamic Layers: false
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