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Data

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...

Filter Total Items: 123

Data to support evaluation of bioremediation of trichloroethene at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020-2022

This metadata record consists of 16 tables containing data generated from laboratory experiments of trichloroethene (TCE) biodegradation and during field characterization and performance monitoring of a groundwater bioremediation pilot test conducted at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota. The data was collected from December 2020 through December...

Volatile organic compound and biogeochemical parameter concentrations from samples collected in porewater, groundwater, and rock matrix, Fort Detrick, Frederick, Maryland, 2018-2020

This metadata record contains 14 tables of biogeochemical data collected to evaluate the fate and transport of chlorinated ethenes in Area B groundwater, Fort Detrick, Frederick, Maryland collected during 2018-2020. Included in the dataset are (1) FtD_All_Constituents_NA_2019: concentrations of all non-VOC constituents analyzed as part of the natural attenuation sampling event in 2019,...

Urban sediment and fallout radionuclide input characteristics of the Hickey Run watershed in Washington, D.C., USA for 2020-2022

This metadata record documents one comma delimited table that contains information on the grain size distribution, fallout radionuclide activity, and geochemical characteristics of urban sediments within the Hickey Run watershed in Washington, D.C. Measurements include radiological activity, sediment particle size information, and elemental composition of source and target sediments.

Per- and polyfluoroalkyl substances (PFAS), volatile organic compounds, biogeochemical, and water quality data from seep samples, Lower Darby Creek Area Superfund Site, near Folcroft, Pennsylvania, 2024

This metadata record contains one table and one shapefile with results from field sampling at locations of groundwater discharge (seeps) identified by autonomous boat survey at the Lower Darby Creek Area (LDCA) Superfund Site, near Folcroft, Pennsylvania, in 2024. Included in the dataset are (1) PFAS concentrations, volatile organic compound (VOC) concentrations, cations/trace metals...

Per-and polyfluoroalkyl substances and polychlorinated biphenyls in influent, effluent, and biosolids samples collected from municipal wastewater treatment plants of the Patapsco and Potomac watersheds, 2021-2023

This metadata record consists of 3 tables containing per-and-poly-fluoroalkyl substances (PFAS) and polychlorinated biphenyls (PCB) concentration data of wastewater and biosolid samples from wastewater treatment plants within the Patapsco and Potomac watersheds. The PCB concentration data was used to assess the occurrence and fate of PCB in wastewater treatment plants within the Patapsco...

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...

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...

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...

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...

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...

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...

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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