• Organization: Department of the Interior
• Updated: 2022-09-08T00:00:00Z

This metadata record describes monthly estimates of natural baseflow for 15,866 stream reaches, defined by the National Hydrography Dataset Plus Version 2.0 (NHDPlusV2), in the Delaware River...

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• Organization: Department of the Interior
• Updated: 2024-12-20T00:00:00Z

This USGS data release contains products that resulted from aquatic species distribution modeling in the United States on the National Hydrography Dataset Plus Version 2.1. Source data, supporting...

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• Organization: Department of the Interior
• Updated: 2022-09-14T00:00:00Z

To estimate changes in nitrogen, phosphorus, and sediment loads from technologies and management practices (TMPs), the Chesapeake Bay Program Partnership's CAST model was used to run scenarios...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-11-19

These are data stored on the EPA GeoPlatform based on ArcGis (ESRI). They are in the form ArcGis tables or Excel files. This "Predicted Background Conductivity" view consists of a shapefile...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2020-01-01

This "Predicted Background Conductivity" view consists of a shapefile derived from National Hydrography Dataset Plus Version 2.0 which displays modeled natural background conductivity for the...

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

The detrimental effects of excess nutrients and sediment entering the Chesapeake Bay estuary from its watersheds have necessitated regulatory actions. Federally-mandated reductions are apportioned...

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• xml

• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

This CSV file contains cumulative fish habitat condition index (HCI) scores generated for river reaches of the conterminous United States as well as indices generated specifically for four spatial...

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