• Organization: U.S. Environmental Protection Agency
• Updated: 2023-11-13

This dataset represents deposition estimates of nutrients within individual local NHDPlusV2 catchments and upstream, contributing watersheds based on the National Atmospheric Deposition Program....

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• Organization: U.S. Environmental Protection Agency
• Updated: 2023-11-13

This dataset represents deposition estimates of nutrients within individual local and accumulated upstream catchments for NHDPlusV2 Waterbodies based on the National Atmospheric Deposition...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2022-06-21

This dataset is associated with the following publication: Benish, S. E., Bash, J. O., Foley, K. M., Appel, K. W., Hogrefe, C., Gilliam, R., and Pouliot, G.: Long-term Regional Trends of Nitrogen...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2018-06-15

These data files associated with the Tables and Figures presented in the following manuscript: Zhang, Y., Mathur, R., Bash, J. O., Hogrefe, C., Xing, J., and Roselle, S. J.: Long-term trends in...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-02-28

Deposition values for the continguous United States are developed from a measurement-model fusion approach that used data from the Community Multiscale Air Quality Model and the Clean Air Status...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2020-11-24

The data are grids of total atmospheric deposition created through a measurement-model fusion process that uses data from the Community Multiscale Air Quality (CMAQ) modeling system and monitoring...

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

Atmospheric mercury (Hg) deposition, which has been declining in North America since 1985, is the preeminent delivery pathway to the Great Lakes, making them sentinels for tracking shifts in...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2020-11-04

USGS generated Estimates of atmospheric inorganic nitrogen deposition to the Chesapeake Bay watershed, 1950-2050. This dataset is associated with the following publication: Burns, D., G. Bhatt,...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-03-13

Data sets used in the analysis presented in the manuscript “A Measurement-Model Fusion Approach for Improved Wet Deposition Maps and Trends”. The datasets used for the analysis presented in this...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2025-10-01

This dataset compiled surface water chemistry data from 1980 to 2024. Data were collected in four regions in the eastern United States (Virginia streams, New York lakes and streams, Maine and New...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2023-05-05

Stream N and other water chemistry measurements originate from three national-scale, randomized, unequally weighted probability surveys of the U.S. EPA's National Rivers and Streams Assessment...

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

This data set represents National Atmospheric Deposition Program (NADP) National Trends Network average of annual precipitation-weighted mean atmospheric deposition for seven select constituents...

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• Organization: Department of the Interior
• Updated: 2023-07-07T00:00:00Z

The USGS Precipitation Chemistry Quality Assurance Project (PCQA) conducts research using the infrastructure of the National Atmospheric Deposition Program (NADP) National Trends Network (NTN)....

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• Organization: Department of the Interior
• Updated: 2021-11-15T00:00:00Z

This data release includes data processing scripts, data products, and associated metadata for a study investigating trends in Mississippi River nitrogen and phosphorus loads to the Gulf of...

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• Organization: Department of the Interior
• Updated: 2024-02-22T00:00:00Z

This data release includes data processing scripts, data products, and associated metadata for a study investigating trends in Mississippi River nitrogen and phosphorus loads to the Gulf of...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2020-04-03

Data in Figure 1 are from publicly available databases including county-level ammonia (NH3) emissions from the US EPA National Emissions Inventory...

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• Organization: Department of Agriculture
• Updated: 2025-09-25

Direct Download (Raster Data Gateway)Objective: Evaluate the impact of atmospheric nitrogen deposition on various ecosystem components including lichens, tree species (both growth and mortality),...

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

This product consists of time-series calculations of anthropogenic characteristics derived for 16 data themes for multiple scales covering the conterminous United States. The characteristics are...

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• Organization: Department of the Interior
• Updated: 2018-04-01T00:00:00Z

New River Gorge National River (NERI) is located in south-central West Virginia along an 85-km stretch of the New River within the Appalachian Mountain chain. NERI conserves the outstanding...

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• Organization: Department of the Interior
• Updated: 2022-08-29T00:00:00Z

This product consists of 29 datasets of tabular data and associated metadata for watershed characteristics of 1,530 study sites of the Surface Water Trends (SWT) project of the U.S. Geological...

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