Found 65 datasets matching filters.
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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: 20 | Catalog Last Checked: May 05, 2026 at 09:28 PM -
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: 16 | Catalog Last Checked: May 05, 2026 at 09:00 PM -
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: 15 | Catalog Last Checked: May 05, 2026 at 08:32 PM -
This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the western and central portion of the...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: May 05, 2026 at 09:35 PM -
This dataset contains the concentration and quality assurance results for inorganic and organic analytes collected for the U.S. Geological Survey (USGS), Ecosystems Mission Area, Environmental...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: May 05, 2026 at 08:33 PM -
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: 10 | Catalog Last Checked: May 05, 2026 at 10:03 PM -
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: 10 | Catalog Last Checked: May 05, 2026 at 10:17 PM -
This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in Suisun Marsh and Suisun Bay in the San Francisco...
Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: May 05, 2026 at 07:43 PM -
This data release contains the concentration and quality-assurance results for inorganic constituents, organic compounds (volatile organic compounds [VOC], per- and polyfluoroalkyl substances...
Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: May 05, 2026 at 09:47 PM -
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: 10 | Catalog Last Checked: May 05, 2026 at 08:52 PM -
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: 10 | Catalog Last Checked: May 05, 2026 at 09:39 PM -
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: 10 | Catalog Last Checked: May 05, 2026 at 08:34 PM -
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: 10 | Catalog Last Checked: May 05, 2026 at 09:51 PM -
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: 10 | Catalog Last Checked: May 05, 2026 at 08:53 PM -
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: 9 | Catalog Last Checked: May 05, 2026 at 08:50 PM -
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: 9 | Catalog Last Checked: May 05, 2026 at 08:32 PM -
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: 8 | Catalog Last Checked: May 05, 2026 at 09:03 PM -
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: 8 | Catalog Last Checked: May 05, 2026 at 10:18 PM -
This data release provides concentration results for per- and polyfluoroalkyl substances (PFAS) collected by volunteer community members, in tapwater samples from 84 private residences, in select...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: May 05, 2026 at 09:07 PM -
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: 8 | Catalog Last Checked: May 05, 2026 at 07:38 PM
