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National Watershed Boundary Dataset (WBD): Hydrologic Unit Code 12-Digit Basins of Washington State [Washington (State)]

Washington State Department of Ecology Full Details

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Title
National Watershed Boundary Dataset (WBD): Hydrologic Unit Code 12-Digit Basins of Washington State [Washington (State)]
Description
The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. The hydrologic units are arranged or nested within each other, from the largest geographic area (regions) to the smallest geographic area (cataloging units). Each hydrologic unit is identified by a unique hydrologic unit code (HUC) consisting of two to eight digits based on the four levels of classification in the hydrologic unit system. The second level of classification divides the 21 regions into 221 subregions. A subregion includes the area drained by a river system, a reach of a river and its tributaries in that reach, a closed basin(s), or a group of streams forming a coastal drainage area. The third level of classification subdivides many of the subregions into accounting units. These 378 hydrologic accounting units are nested within, or can be equivalent to the subregions. The fourth level of classification is the cataloging unit, the smallest element in the hierarchy of hydrologic units. A cataloging unit is a geographic area representing part of all of a surface drainage basin, a combination of drainage basins, or a distinct hydrologic feature. These units subdivide the subregions and accounting units into smaller areas. There are 2264 Cataloging Units in the Nation. Cataloging Units sometimes are called "watersheds".Last Updated: March, 2018. GIS Metadata:https://fortress.wa.gov/ecy/gispublic/DataDownload/ECY_WAT_WBDWA.htmFor more information, contact Josh Greenberg, Washington State Department of Ecology, NHD Hydrography Data Steward,joshua.greenberg@ecy.wa.gov.
Creator
Washington State Department of Ecology
Temporal Coverage
Last modified 2024-08-20
Date Issued
2014-10-16
Rights
Category 1 - Public Information. These data can be shared publicly.The Washington State Department of Ecology (Ecology) provides these geographic data "as is" without a warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability, accuracy, fitness for a particular use and/or non-infringement. In no event shall Ecology have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographical data or arising out of the delivery, installation, operation, or support by Ecology. Ecology reserves the right to change this policy at any time without notice.Any legal questions regarding this copyright notice and disclaimer, or other questions regarding the use of the material from Ecology's Web sites, may be directed to Web Communications Manager, Washington State Department of Ecology, PO Box 47600, Olympia, WA 98504-7600, 360-407-6590.https://ecology.wa.gov/About-us/Accountability-transparency/Website-information/Copyright-information
Access Rights
Public
Format
Shapefile
Language
English
Date Added
March 07, 2025

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Cite and Reference

  • Citation
    Washington State Department of Ecology (2014). National Watershed Boundary Dataset (WBD): Hydrologic Unit Code 12-Digit Basins of Washington State [Washington (State)]. . https://geo.wa.gov/datasets/waecy::national-watershed-boundary-dataset-wbd-hydrologic-unit-code-12-digit-basins-of-washington-state (dataset)
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