Found 13 datasets matching filters.
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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...
Search relevance: 1.00 | Views last month: 33 | Published on: 2026-03-07 -
The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage...
Search relevance: 1.00 | Views last month: 14 | Published on: 2026-03-03 -
Regional regression equations were calculated in Puerto Rico with generalized least squares techniques to estimate flood frequency statistics at ungaged locations using drainage area as the only...
Search relevance: 1.00 | Views last month: 13 | Published on: 2026-03-03 -
The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated datset of geospatial data layers, including the most current National Hydrography Dataset (NHD),...
Search relevance: 1.00 | Views last month: 8 | Published on: 2026-03-03 -
These data were used to examine how post-fire sedimentation might change in western USA watersheds with future fire from the decade of 2001-10 through 2041-50. The data include previously...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
This dataset is the digital hydrologic unit boundary layer for the 8-digit subwatershed boundaries for the conterminous United States. This dataset is intended to be used with the following two...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-07 -
This EnviroAtlas web service contains layers depicting hydrologic unit boundary layers and labels for the Subregion level (4-digit HUCs), Subbasin level (8-digit HUCs), and Subwatershed level...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-01-27 -
This data set contains the topographic and administrative hydrographic area boundaries for the Humboldt River Basin at 1:24,000-scale.
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-07 -
Each year the U.S. Environmental Protection Agency (EPA) reports permit, location, and discharge information for facilities across the United States and its territories through the Discharge...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
The River Management Program provides technical and regulatory assistance for those activities that involve construction or excavation in rivers and streams. The River Management Engineers issue...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-08-08 -
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 geo-referenced digital data and...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-01-27 -
The California Department of Fish and Wildlife (CDFW) State Wildlife Action Plan (SWAP) is designed to enhance CDFW conservation efforts. To this end, the plan establishes regions called...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-07-28 -
** Dataset containing HUC12 watershed boundaries that are within or intersect the boundary of a standard park AOA. ** The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-04
