Data

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

Water-use estimates for 2015, aggregated to county levels

MD-DE-DC Groundwater Capabilities

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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.

MD Water Data

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

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.

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DC Water Data

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

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June 14, 2021

Occurrence of per- and polyfluoroalkyl substances in sampled source water of public drinking-water supplies in the surficial aquifer in Delaware, 2018 Occurrence of per- and polyfluoroalkyl substances in sampled source water of public drinking-water supplies in the surficial aquifer in Delaware, 2018

Thirty water-supply drinking-water wells were sampled during fall 2018 for a set of constituents including PFAS. Groundwater samples were sent to Maxxam Laboratories (RTI Laboratory contract) to be analyzed for eighteen PFAS using USEPA 537m method. Groundwater age data were collected and analyzed as well in the USGS Reston, Va. laboratory. Quality-control samples including equipment and...

Maryland-Delaware-D.C. Water Science Center

April 19, 2021

Visible and near-infrared spectroscopy for sediment samples collected across North-eastern U.S. Visible and near-infrared spectroscopy for sediment samples collected across North-eastern U.S.

This data record contains a CSV file with spectral reflectance (420-2114 nm) for sediment samples collected from each of four source locations (cropland, stream bank, glaciolacustrine, and street dust) located across sites in the Northwestern US during prior studies. Data were collected in a laboratory setting using Spectrecology USB4000-VIS-NIR and NIRQuest512-2.2 spectrometers. The...

Maryland-Delaware-D.C. Water Science Center

April 14, 2021

SPARROW model input datasets and predictions of nitrogen loads in streams of the Chesapeake Bay watershed SPARROW model input datasets and predictions of nitrogen loads in streams of the Chesapeake Bay watershed

This data release contains mean-annual total nitrogen (TN) loads predicted by a SPARROW model for individual stream and shoreline reaches in the Chesapeake watershed as defined by NHDPlus, a 1:100,000 scale representation of stream hydrography built upon the National Hydrography Dataset (NHD) (Horizon Systems, 2010). Also included are the input variables required to execute the model...

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

February 10, 2021

Data for Specific Gage Analysis on the Patapsco River, 2010-2017 Data for Specific Gage Analysis on the Patapsco River, 2010-2017

The U.S. Geological Survey, in collaboration with American Rivers and other partners, conducted a monitoring program beginning in 2010 to track river response to a series of dam removals on the Patapsco River intended to restore anadromous fish habitat in the watershed. Dam removals included the November 2010 removal of the Simkins dam, a 3.3 m tall and 66 m wide dam, with a reservoir...

Maryland-Delaware-D.C. Water Science Center

January 26, 2021

Low-streamflow and precipitation trends for 183 U.S. Geological Survey streamgages in the Chesapeake Bay Watershed Low-streamflow and precipitation trends for 183 U.S. Geological Survey streamgages in the Chesapeake Bay Watershed

This data release contains low-streamflow trend results from 183 U.S. Geological Survey (USGS) streamgages and precipitation trend results from gaged watersheds within the Chesapeake Bay Watershed. Data include streamgage identification number, trend slopes and significance for several low-streamflow and precipitation metrics.

Water Resources Mission Area, Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center, Pennsylvania Water Science Center

January 5, 2021

Dam impact/disturbance metrics for the conterminous United States, 1800 to 2018 Dam impact/disturbance metrics for the conterminous United States, 1800 to 2018

This metadata record describes two metrics that quantitatively measure the impact of reservoir storage on every flowline in the NHDPlus version 2 data suite (NHDPlusV2) for the conterminous United States. These metrics are computed for every 10 years from 1800 - 2015. The first metric (DamIndex_EROM.zip) estimates reservoir storage intensity in units of days based on reservoir storage in...

Maryland-Delaware-D.C. Water Science Center

December 2, 2020

Water bodies within 500 meters of poultry feeding operations on the Delmarva Peninsula in 2016 and 2017 Water bodies within 500 meters of poultry feeding operations on the Delmarva Peninsula in 2016 and 2017

Data release contains 1710 polygons representing small bodies of water within 500 meters of poultry feeding operations on the Delmarva Peninsula. Ponds were identified using the USDA's National Agriculture Imagery Program's 2016 and 2017 products. Poultry feeding operations were described in location by Soroka and Duren (2020).

Maryland-Delaware-D.C. Water Science Center

November 24, 2020

Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2020 Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2020

Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes from nine tributaries to the Chesapeake Bay from 1985 to 2020. Data are presented 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 estimation include...

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

November 18, 2020

Volatile organic compound and metal concentrations associated with field sampling and laboratory experiments and in situ microcosm results, wetland bioremediation study, Standard Chlorine of Delaware, Inc. Superfund site, New Castle County, Delaware, 2015 Volatile organic compound and metal concentrations associated with field sampling and laboratory experiments and in situ microcosm results, wetland bioremediation study, Standard Chlorine of Delaware, Inc. Superfund site, New Castle County, Delaware, 2015

This dataset presents analytical results for laboratory and field tests conducted during 2015�19 as part of a bioremediation study in the wetland study area at Standard Chlorine of Delaware, Inc. Superfund site. Included in the dataset are (1) volatile organic compound and metal concentrations from field sampling in the wetland area, (2) results from in situ microcosms in the reactive...

Maryland-Delaware-D.C. Water Science Center

November 9, 2020

Contiguous U.S. annual snow persistence and trends from 2001-2020 Contiguous U.S. annual snow persistence and trends from 2001-2020

Snow persistence (SP) or the snow cover index (SCI), is the fraction of time that snow is present on the ground for a defined period. Cloud covered index (CCI) is the fraction of time that there is no data, cloud, or sensor saturation for the same period. SP and CCI were calculated on a pixel by pixel basis using MODIS/Terra Snow Cover 8-Day L3 Global 500m Grid, Collection 6 obtained...

Maryland-Delaware-D.C. Water Science Center

September 1, 2020

Groundwater Quality and Plume Boundaries for Select Contaminants of Concern at Badger Army Ammunition Plant, Wisconsin (2000 - 2018) Groundwater Quality and Plume Boundaries for Select Contaminants of Concern at Badger Army Ammunition Plant, Wisconsin (2000 - 2018)

This dataset describes concentrations of select contaminants in groundwater, collected at monitoring wells in the vicinity of the Badger Army Ammunition Plant in Sauk County, Wisconsin, between 2000 - 2018. The data were used to assess trends in contaminant concentrations over time, delineate plume boundaries at various time intervals, and assess the overall monitoring network at the...

Maryland-Delaware-D.C. Water Science Center

July 31, 2020

Low-altitude aerial imagery from unmanned aerial systems (UAS) at select locations over the Potomac River, October 2019 Low-altitude aerial imagery from unmanned aerial systems (UAS) at select locations over the Potomac River, October 2019

These digital images were taken at select locations over the Potomac River using 3DR Solo unmanned aircraft systems (UAS) in October 2019. These images were collected for the purpose of evaluating UAS assessment of river habitat data such as water depth, substrate type, and water clarity. Each UAS was equipped with a Ricoh GRII digital camera for natural color photos, used to produce...

Maryland-Delaware-D.C. Water Science Center