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Estimated Use of Water in the United States County-Level Data for 2015

Water-use estimates for 2015, aggregated to county levels

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MD-DE-DC Groundwater Capabilities

Always start with dependable, reliable data

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Hydrologic data collection, processing, analysis, dissemination, and archiving are major parts of the MD-DE-DC Water Science Center program. Much of the data are available on a near-real-time basis by satellite telemetry.

The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols.

More on data acquisition methods

MD Water Data

MD Surface Water

Explore real-time streamflow, groundwater, and water-quality conditions and access data for Maryland with our new interactive map application. This application offers data displays on multiple device platforms with various basemap options.

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DE Water Data

md.de.dc water dashboard

Explore real-time streamflow, groundwater, and water-quality conditions and access data for Delaware with our new interactive map application. This application offers data displays on multiple device platforms with various basemap options.

See DE Summary

DC Water Data

MD Surface Water

Explore real-time streamflow, groundwater, and water-quality conditions and access data for DC with our new interactive map application. This application offers data displays on multiple device platforms with various basemap options.

See DC Summary
Filter Total Items: 143

Estimated seasonal nitrogen and phosphorus loads in selected streams of the conterminous United States, 1999 - 2020 Estimated seasonal nitrogen and phosphorus loads in selected streams of the conterminous United States, 1999 - 2020

Estimated seasonal total nitrogen and total phosphorus loads during 1999 through 2020 in selected streams of the conterminous United States and water-quality and stream flow data used to generate those estimates are presented in this dataset. Loads were generated as part of the Integrated Water-Availability Assessment (IWAA) Program of the U.S. Geological Survey (www.usgs.gov/mission...
By
Maryland-Delaware-D.C. Water Science Center

Cropland Data Layer summaries for NHDPlus Version 2.1 Reach Catchments in the Conterminous United States, 2000-2022 Cropland Data Layer summaries for NHDPlus Version 2.1 Reach Catchments in the Conterminous United States, 2000-2022

This dataset contains summary tables of land cover from the Cropland Data Layer (CDL) for individual stream catchments of the conterminous United States from the National Hydrography Dataset Plus Version 2.1 (United States Department of Agriculture National Agricultural Statistics Service, 2024; McKay and others, 2012). These data were summarized from primarily 30 meter grid cell raster...
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Maryland-Delaware-D.C. Water Science Center

Data Collected to Evaluate Sources, Fate, and Mobility of Per- and Polyfluoroalkyl Substances (PFAS) at Cannon Air Force Base, New Mexico Data Collected to Evaluate Sources, Fate, and Mobility of Per- and Polyfluoroalkyl Substances (PFAS) at Cannon Air Force Base, New Mexico

Soil, soil porewater, groundwater, and playa lake sediment samples were collected between September 2021 and November 2023 at Cannon Air Force Base (CAFB) in eastern New Mexico as part of a study on the sources, fate, and transport of per- and polyfluoroalkyl substances (PFAS). Soil cores (2-foot-long) were collected in September 2021 from six sites that were potential PFAS source areas...
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Maryland-Delaware-D.C. Water Science Center

2014 Social Vulnerable Index factors compiled for CONUS at the NHDPlusV2 scale 2014 Social Vulnerable Index factors compiled for CONUS at the NHDPlusV2 scale

The released data contain both a csv and parquet file summarizing the Centers for Disease Control (CDC) Social Vulnerability Index (SVI), at the NHDPlus V2 stream catchment scale. Dasymetric mapping was utilized to bound 2014 populations to the 2013 National Land Cover Dataset and then trim them to NHDPlus V2 catchments. These produced data are summarized as numbers of people within each...
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Maryland-Delaware-D.C. Water Science Center

Nitrogen and phosphorus inputs from fertilizer and manure in the Continental United States, 2002-2017 Nitrogen and phosphorus inputs from fertilizer and manure in the Continental United States, 2002-2017

This dataset contains tables of estimated fertilizer and manure nutrient inputs in kilograms to individual stream catchments of the continental United States from the National Hydrography Dataset Plus Version 2.1 (McKay and others, 2012). These data were downscaled from county-level estimates of nitrogen and phosphorus inputs from Falcone (2021) by allocating mass of applied nutrients to
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Maryland-Delaware-D.C. Water Science Center

Biosolids Data Input Disaggregation from County to National Hydrography Dataset Plus Biosolids Data Input Disaggregation from County to National Hydrography Dataset Plus

This metadata record contains two tables with reported and calculated amounts of biosolids applied to agricultural land within the Chesapeake Bay watershed in 2023 at different scales. Included in the dataset are (1) mass of land-applied biosolids calculated for NHDPlus Version 2.1 (NHDPlusV2) reach catchments in 2023 and (2) actual amount of biosolids applied to land by county in 2023...
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Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2024 Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2024

Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes summed from nine tributaries to the Chesapeake Bay from 1985 to 2024. Data are presented as the sum from tributaries within the USGS River Input Monitoring (RIM) network identified by site numbers: 01491000, 01578310, 01594440, 01646580, 01668000, 01673000, 01674500, 02035000, 02041650. Periods of...
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Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2023 Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2023

Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes summed from nine tributaries to the Chesapeake Bay from 1985 to 2023. Data are presented as the sum from tributaries within the USGS River Input Monitoring (RIM) network identified by site numbers: 01491000, 01578310, 01594440, 01646580, 01668000, 01673000, 01674500, 02035000, 02041650. Periods of...
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Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

Delmarva Peninsula Stream Health and Habitat Assessments in Maryland and Delaware (2022) (ver. 2.0, April 2025) Delmarva Peninsula Stream Health and Habitat Assessments in Maryland and Delaware (2022) (ver. 2.0, April 2025)

U. S. Geological Survey (USGS) scientists completed a data collection campaign from the 25th of April to the 10th of June in 2022, using various methods to record geomorphic and habitat indicators throughout 30 streams on the Delmarva Peninsula. Field methods included GNSS surveys, gravelometer-based pebble count readings, visual assessments, and riparian analyses. This metadata record...
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Maryland-Delaware-D.C. Water Science Center

Per- and polyfluoroalkyl substances (PFAS) and volatile organic compounds measured in laboratory microcosm experiments with soil from Fort Drum, New York Per- and polyfluoroalkyl substances (PFAS) and volatile organic compounds measured in laboratory microcosm experiments with soil from Fort Drum, New York

Anaerobic microcosm experiments were conducted in April-May 2018 with PFAS-contaminated soil from a U.S. Army installation (Fort Drum, New York) and simulated groundwater. All microcosms, except for a live sediment control, were amended with perfluorooctanesulfonate (PFOS), perfluorooctanoate (PFOA), and 6:2 fluorotelomer sulfonate (6:2 FtS). Replicate treatments were prepared with and...
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Maryland-Delaware-D.C. Water Science Center

Snow drought classification and streamflow timing and magnitude signatures for snow dominated USGS watersheds in the Conterminous United States from 1980 to 2020 Snow drought classification and streamflow timing and magnitude signatures for snow dominated USGS watersheds in the Conterminous United States from 1980 to 2020

This data release contains snow drought classifications as well as streamflow timing and magnitude signatures for gaged, snow-dominated U.S. Geological Survey (USGS) watersheds in the Conterminous United States (CONUS) from 1980 to 2020 supporting the journal article "Snow drought classification and streamflow timing and magnitude signatures for snow dominated USGS watersheds in the...
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Maryland-Delaware-D.C. Water Science Center, Drought

Daily time series of surface water input from rainfall, rain on snow, and snowmelt for the Conterminous United States from 1990 to 2023, as well as annual series of input seasonality, precipitation seasonality, and average rainfall, rain on snow, and snow Daily time series of surface water input from rainfall, rain on snow, and snowmelt for the Conterminous United States from 1990 to 2023, as well as annual series of input seasonality, precipitation seasonality, and average rainfall, rain on snow, and snow

This data release contains daily gridded data reflecting surface water input from rainfall, rain on snow (mixed), and snowmelt for the conterminous United States for water years 1990 to 2023 (1990/10/01 to 2023/09/30). This release also contains annual estimates of gridded input seasonality (an index reflecting whether surface water input occurs within a concentrated period or is equally
By
Maryland-Delaware-D.C. Water Science Center
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