• Organization: Department of the Interior
• Updated: 2020-08-24T00:00:00Z

This USGS data release consists of three datasets representing three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-24T00:00:00Z

This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-24T00:00:00Z

This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-24T00:00:00Z

This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The...

• xml
• xml

• Organization: U.S. Environmental Protection Agency
• Updated: 2020-12-27T00:00:00.000+00:00

This geospatial dataset contains NHDPlus v2.1 Waterbody extracts for usage with the EPA HSRP Storage-Staging-Siting Tool. The dataset is distributed by state for the conterminous United States...

• none

• Organization: Department of the Interior
• Updated: 2022-08-05T00:00:00Z

This data release provides a list of 2,304 water-quality sampling sites indexed to NHDPlus v2.1 flowlines along with the verified ComIDs. ComIDs are the unique identifiers for NHDPlus flowlines...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2021-12-21T00:00:00Z

This U.S. Geological Survey (USGS) data release includes locations for 12,422 USGS streamgages as indexed along the network of streams (flowlines) in NHDPlus Version 2.1 (NHDPlus v2, Moore and...

• xml
• xml

• Organization: U.S. Environmental Protection Agency
• Updated: 2020-06-08T00:00:00.000+00:00

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

• none

• Organization: Department of the Interior
• Updated: 2023-10-05T00:00:00Z

A wastewater reuse model was applied to the Upper Colorado River basin to assess the percent of accumulated wastewater (ACCWW%) from municipal and industrial wastewater treatment plants (WWTPs) in...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-08-02T00:00:00Z

This metadata record documents 2 datasets representing population served by fresh water from public supply by NHDPlus v2.1 catchment within the conterminous United States for 2013. Provided as...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2022-09-06T00:00:00Z

The comid field of these data can be used to join to the NHDPlus version 2 flowline comid or catchment featureid attributes. The included attributes follow the same data model as the NHDPlusV2 but...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2022-08-24T00:00:00Z

A crosswalk table between NHDPlus version 2.1 flowlines (using the unique field COMID) and the Watershed Boundary Dataset (WBD) 12-digit-hydrologic units (HU-12) is provided for the 48 contiguous...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-08-02T00:00:00Z

This dataset describes attributes of surface-water impoundments derived from the National Inventory of Dams (NID), National Land Cover Data (NLCD) and the National Hydrography Dataset Plus...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-08-02T00:00:00Z

This metadata record documents an ascii comma-delimited file representing estimated nitrogen in kilograms by NHDPlus v2.1 catchments for the conterminous United States. Nitrogen estimates were...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-08-02T00:00:00Z

This metadata record documents two comma separated text files of average daily fresh-water withdrawal amounts by NHDPlus v2.1 catchment (COMID) within the conterminous United States for calendar...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-26T00:00:00Z

Empirical models described in previous publications were developed and applied to estimate the probability of streamflow modification for every stream segment in the conterminous United States...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-02-01T00:00:00Z

The comid field of these data can be used to join to the National Hydrography Dataset Plus V2.1 (NHDPlusV2) flowline comid or catchment featureid attributes. The included attributes follow the...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-08-30T00:00:00Z

This data release presents calculated accumulated wastewater (ACCWW, as a percent of total streamflow) values for 43 National Hydrologic Dataset Version 2.1 (NHDPlus V2.1) stream segments...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2024-11-01T00:00:00Z

These attributes are based on the NHDPlusV2 network geometry and modifications retrieved from the National Water Model V2.1 (NWMv2.1) and "E2NHDPlusV2_us: Database of Ancillary Hydrologic...

• xml
• xml

• Organization: U.S. Environmental Protection Agency
• Updated: 2017-08-04T00:00:00.000+00:00

This EnviroAtlas dataset is a digital hydrologic unit (HUC) boundary layer to the Subwatershed (12-digit) 6th level for Puerto Rico, based on the May 2016 NHDPlus V2.1 WBD (Watershed Boundary...