Data Catalog

• Federal

  EnviroAtlas - HU12_polygon

  U.S. Environmental Protection Agency —

  This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of...

  • HTML
  • HTML
  • HTML
  • HTML
• State

  12 Digit Hydrologic Unit 2006 (polygon)

  State of Arkansas —

  This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the State of Arkansas. This data set consists of geo-...

  • Esri REST
  • HTML
• University

  New Mexico 6th Code Subwatersheds (12-digit)

  Earth Data Analysis Center, University of New Mexico —

  This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the State of New Mexico. This data set consists of...

  • ZIP
  • XML
  • HTML
  • XML
  • HTML
• Federal

  NHDPlus v2.1 and Alaska Beta NHDPlus

  U.S. Environmental Protection Agency —

  This dataset contains upstream watershed drainage areas for catchments comprising Catchment Fabric HUC12 units. The dataset is incomplete for Alaska.

  • Esri REST
• State

  8 Digit Hydrologic Unit 2006 (polygon)

  State of Arkansas —

  This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the State of Arkansas. This data set consists of geo-...

  • Esri REST
  • HTML
• Federal

  EPA Office of Water (OW): NHDPlus v21+AK Beta Catchment Fabric Twelve-Digit Subwatersheds

  U.S. Environmental Protection Agency —

  This dataset contains twelve-digit hydrologic subwatershed units aggregated from the NHDPlus v21+AK Beta State Catchment Fabric. These units express the Catchment...

  • Esri REST

You can also access this registry using the API (see API Docs).

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