USGS HUC-8 Sub-basin layer


This data set is a complete digital hydrologic unit boundary layer of the Subbasin (8-digit) 4th level for the entire United States. This data set consists of geo-referenced digital data and associated attributes created in accordance with the "Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3" (04/01/2009). . Polygons are attributed with hydrologic unit codes for 4th level sub-basins, 5th level watersheds, 6th level subwatersheds, name, size, downstream hydrologic unit, type of watershed, non-contributing areas and flow modification. The data is currently updated through the USGS National Hydrography Dataset (NHD) Program and replicated to NRCS twice per year.

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Additional Information

Field Value
Last updated unknown
Created November 12, 2014
Format ZIP


[Open Data]

Dataset Keywords Hydrology,Watershed
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Dataset Status Complete
Version 1.0
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Maintenance and update frequency Unknown
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Dataset DOI 10.5203/KY07-X313
Cite dataset As U.S Geological Survey, 2014, "USGS HUC-8 Sub-Basin Layer", USGS HUC-8 Watershed layer, 10.5203/KY07-X313, Canadian Watershed Information Network, V1.
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Dataset Author Name U.S Geological Survey
Dataset Author Email None
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Name U.S Geological Survey
Type DataCurator
Data Email None
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License Type Open
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License Name Creative Commons Attribution Share-Alike 4.0
License Scheme Name SPDX
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