Skip to main content
USGS - science for a changing world

USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 11 (published 20190628)


Publication Date
Start Date
End Date
File Modification Date
2019-06-28 21:10:00


U.S. Geological Survey (USGS), U.S. Department of Agriculture - Natural Resource Conservation Service (NRCS), U.S. Environmental Protection Agency (EPA), and Other Federal, State, and local partners (see dataset specific metadata for details, 20190628, USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 11 (published 20190628): .


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" ( 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 [...]


Attached Files

Click on title to download individual files attached to this item.

Original FGDC Metadata

118.72 KB


The intent of defining Hydrologic Units (HU) within the Watershed Boundary Dataset is to establish a base-line drainage boundary framework, accounting for all land and surface areas. Hydrologic units are intended to be used as a tool for water-resource management and planning activities particularly for site-specific and localized studies requiring a level of detail provided by large-scale map information. The WBD complements the National Hydrography Dataset (NHD) and supports numerous programmatic missions and activities including: watershed management, rehabilitation and enhancement, aquatic species conservation strategies, flood plain management and flood prevention, water-quality initiatives and programs, dam safety programs, fire assessment and management, resource inventory and assessment, water data analysis and water census.
Thumbnail JPG image
Thumbnail JPG image



  • National Geospatial Program
  • The National Map




Data source
Link Processing

Additional Information


Type Scheme Key
id gda 13444673

Item Actions

View Item as ...

Save Item as ...

View Item...