• Organization: Department of the Interior
• Updated: 2021-10-21T00:00:00Z

This data release contains the results from a study of the transport and transformation of nitrate in groundwater and streams across diverse glacial terranes within the Western Lake Michigan...

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• Organization: Department of the Interior
• Updated: 2025-02-13T00:00:00Z

This data release contains tracer data and estimated age distributions of groundwater samples collected as part of a water availability study for the Mississippi alluvial plain (MAP). The MAP is...

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• Organization: Department of the Interior
• Updated: 2024-01-30T00:00:00Z

These data are solubility calculations for dissolved gases in groundwater samples collected to support a U.S. Geological Survey study to estimate the timing and source of recharge to the basalt...

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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: 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: 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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