• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2014-04-21T00:00:00.000+00:00

This dataset includes chemical, discrete sample, physical and profile data collected from RYOFU MARU in the Philippine Sea from 1995-11-15 to 1995-11-30 and retrieved during cruise...

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• Organization: Department of the Interior
• Updated: 2023-03-09T00:00:00Z

The U.S. Geological Survey (USGS) in cooperation with the Miami Conservancy District, Dayton, Ohio, in 2019 and 2020 investigated the occurrence of per- and polyfluoroalkyl substances (PFAS) in...

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• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

This raster data set delineates the predicted probability of unmixed young groundwater (defined using chlorofluorocarbon-11 concentrations and tritium activities) in groundwater in the Eagle...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2013-12-16T00:00:00.000+00:00

Cruise>Climate Variability and Predictability (CLIVAR) A22,A20 (AT20, EM122). The hydrographic surveys will consist of approximately 180 full water column CTD/LADCP casts along the trackline. ...

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• Organization: Department of the Interior
• Updated: 2021-03-04T00:00:00Z

The Mississippi River Valley alluvial aquifer (MRVA) overlies and is bounded by several regional aquifers that make up the Mississippi embayment aquifer system (MEAS) in the central United States....

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• Organization: Department of the Interior
• Updated: 2023-03-10T00:00:00Z

This data release presents results of chemical analyses of groundwater sampled during summer and autumn of 2019 and spring of 2020 from 23 wells in the Great Miami buried-valley aquifer (GM-BVA)...

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• Organization: Department of the Interior
• Updated: 2025-12-01T00:00:00Z

Groundwater age distributions and susceptibility to natural and anthropogenic contaminants were assessed for selected wells, streambed piezometers, and springs in southeastern Minnesota. The data...

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• Organization: Department of the Interior
• Updated: 2023-12-22T00:00:00Z

The U.S. Geological Survey (USGS), in cooperation with the Bureau of Reclamation, began hydrogeologic investigations in 2009 in the Paradox Valley in Colorado. In June 2011, nine groundwater...

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• Organization: Department of the Interior
• Updated: 2025-12-01T00:00:00Z

Groundwater age distributions and susceptibility to natural and anthropogenic contaminants were assessed for selected wells across Minnesota. The data provide information to understand how long it...

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• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

This raster data set delineates the predicted probability of elevated nitrate concentrations in groundwater in the Eagle River watershed valley-fill aquifer, Eagle County, North-Central Colorado,...

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• Organization: Department of the Interior
• Updated: 2022-04-11T00:00:00Z

This data release contains five comma separated value (csv) files that describe the location and water-quality data for wells, springs, and streams compiled for the U.S. Geological Survey (USGS)...

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• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

This raster data set delineates the predicted probability of elevated volatile organic compound (VOC) concentrations in groundwater in the Eagle River watershed valley-fill aquifer, Eagle County,...

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• Organization: Department of the Interior
• Updated: 2020-08-24T00:00:00Z

These data comprise air, plant (creosote bush, Larrea tridentata), and unsaturated-zone tritium measurements and plant metrics collected during 2012 to 2016 from three sampling areas at the...

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• Organization: State of California
• Updated: 2026-01-13T23:16:16.618767

The California State Water Project (SWP) is one of the nation’s largest water conveyance projects. Its geographic extent stretches from Sierra Nevada lakes north of Lake Tahoe, down the Central...

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• Organization: Department of the Interior
• Updated: 2024-03-19T00:00:00Z

Groundwater data were collected in the spring and fall of 2008 from three sites representing different geological settings and biogeochemical conditions within the surficial glacial aquifer of...

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• Organization: Department of the Interior
• Updated: 2022-07-07T00:00:00Z

This data release documents seven tables that contain environmental tracer data and lumped parameter model (LPM) results that are used for assessing the distribution of groundwater age in 23...

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• Organization: Department of the Interior
• Updated: 2020-08-12T00:00:00Z

High concentrations of uranium were detected in samples from wells used for domestic drinking water supplies in the San Joaquin Valley. Of 163 domestic wells sampled by the California Groundwater...

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• Organization: Department of the Interior
• Updated: 2025-03-04T00:00:00Z

There are over 10,000 hydrothermal features in Yellowstone National Park (YNP), where waters have pH values ranging from about 1 to 10 and surface temperatures up to 95 °C. Active hydrothermal...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2020-04-04T00:00:00.000+00:00

This dataset includes discrete profile measurements of chlorofluorocarbons (CFC-11, CFC-12), sulfur hexafluoride (SF6), temperature, salinity, dissolved oxygen, helium, tritium and neon collected...

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• Organization: Department of the Interior
• Updated: 2024-03-13T00:00:00Z

Historical water and gas chemistry data from geothermal areas are important for detecting long-term patterns, informing geothermal energy exploration, development, and use, and for contextualizing...

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