Found 56 datasets matching filters.
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This data release describes water service areas (WSA) for community water systems (CWS) within the conterminous United States, representing areas of active service between 2010 and 2020. A WSA is...
Search relevance: 1.00 | Views last month: 6 | Published on: 2026-03-03 -
In this dataset we present two maps that estimate the location and population served by domestic wells in the contiguous United States. The first methodology, called the “Block Group Method” or...
Search relevance: 1.00 | Views last month: 4 | Published on: 2026-03-03 -
A series of three-dimensional, hypothetical, groundwater models (MODFLOW-NWT) were developed to investigate the effects of a variety of factors on the flow of arsenic-containing water into a...
Search relevance: 1.00 | Views last month: 4 | Published on: 2026-03-03 -
Water-quality data for groundwater samples collected from 4,824 sites, and ancillary data and information on sampled wells and principal aquifers, were used to assess the occurrence and...
Search relevance: 1.00 | Views last month: 3 | Published on: 2026-03-03 -
Of the approximately 6.6 million people living in the Mississippi embayment (MISE) region in the central United States, approximately 65 percent rely on groundwater for their drinking water...
Search relevance: 1.00 | Views last month: 3 | Published on: 2026-03-03 -
This data release contains data used to develop models and maps that estimate probabilities of exceeding various thresholds of arsenic concentrations in private domestic wells throughout the...
Search relevance: 1.00 | Views last month: 3 | Published on: 2026-03-03 -
The 1990 census was the last nationally consistent survey of a home’s source of water, and has not been surveyed since. The associated larger work presents a method for projecting the population...
Search relevance: 1.00 | Views last month: 2 | Published on: 2026-03-03 -
The ascii grids associated with this data release are predicted distributions of continuous pH at the drinking water depth zones in the groundwater of Central Valley, California. The two...
Search relevance: 1.00 | Views last month: 2 | Published on: 2026-03-03 -
This data release contains input data used in model development and TIF raster files used to predict the probability of low dissolved oxygen (DO) and high dissolved iron (Fe) in groundwater within...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
Data from more than 75,000 community public supply wells were acquired from national and state agencies. Using the information provided by the agencies, along with surficial and bedrock geologic...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
This dataset provides the calculated proportion of people using publicly supplied groundwater (PSGF) for each county in the conterminous U.S. The county boundaries and the PSGF represent the year 2015.
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
The dataset documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta of the Sacramento-San Joaquin River Delta...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
Well construction data for 11,917 domestic and 2,390 public-supply wells in the Central Valley were compiled as part of the U.S. Geological Survey (USGS) National Water Quality Assessment Project...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
This data release includes grids representing the depth and thickness of drinking-water withdrawal zones, polygons of hydrogeologic settings, an inventory of sources of well construction data, and...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
The 1990 census was the last nationally consistent survey of a home’s source of water, and has not been surveyed since. The associated larger work presents a method for projecting the population...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
Broad-area, high-resolution, boat-based water quality mapping surveys of the Sacramento-San Joaquin Delta and Suisun Bay (Delta) of California, USA were conducted under different...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
Water-quality data were collected by the Providence Water Supply Board (PWSB) from tributaries in the Scituate Reservoir drainage area, October 2015 through September 2016 (water year 2016). These...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
Water-quality data were collected by the Providence Water Supply Board (PWSB) from tributaries in the Scituate Reservoir drainage area, October 2016 through September 2017 (water year 2017)....
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
This data release provides the concentration results for per- and polyfluoroalkyl substances (PFAS) collected on French Island, in the town of Campbell, Wisconsin, sampled quarterly beginning in...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
Annual loads of selected constituents were estimated for five stations in the Scituate Reservoir drainage area, Rhode Island, for water years 2016 to 2019 as part of a long-term monitoring program...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03
