Found 17 datasets matching filters.
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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 -
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 -
This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000...
Search relevance: 1.00 | Views last month: 2 | Published on: 2025-08-08 -
Channel migration is the natural process by which streams move laterally over time. It is typically a gradual phenomenon that works over many years to effect significant migration. In some cases,...
Search relevance: 1.00 | Views last month: 2 | Published on: 2026-01-27 -
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 -
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 digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-08-08 -
The coastal region which includes areas within South Carolina and North Carolina was chosen as a focus area study (FAS) for the U.S. Geological Survey (USGS) National Water Census (NWC) in 2016....
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
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 -
This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. It was revised for inclusion in the...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-07 -
This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-08-08 -
This dataset and the accompanying Data Series report was created to assist in analysis and interpretation of water-quality data provided by the U.S. Geological Survey, National Stream Quality...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-07 -
This data set contains hydrologic cataloging-unit boundaries for selected units within the Powder River drainage basin of Wyoming. The hydrologic unit boundaries were delineated by using...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-07 -
This data set has been superseded by huc2m. This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-07 -
** 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
