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New & Noteworthy

* Press Release: Study Explores Groundwater and Geothermal Energy in Drought-Stricken Eastern Oregon and Neighboring States

* Technical Announcement: USGS Issues Revised Framework for Hydrogeology of Floridan Aquifer

* Press Release: High Plains Aquifer Groundwater Levels Continue to Decline

* Regional Groundwater Availability Study Geospatial Data

* Press Release: USGS Assesses Current Groundwater-Quality Conditions in the Williston Basin Oil Production Area

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GWRP > Regional Groundwater Availability Studies Geospatial Data > Columbia Plateau

Columbia Plateau Regional Aquifer System

 [Image: Columbia Plateau aquifer location map.]

The Columbia Plateau regional aquifer system (CPRAS) covers parts of Idaho, Oregon, and Washington. The primary aquifers of the CPRAS are basaltic lava flows of the Columbia River Basalt Group and overlying basin-fill sediments. Generalized geologic units for the CPRAS include Overburden, Saddle Mountains Basalt, Mabton Interbed, Wanapum Basalt, Vantage Interbed, Grande Ronde Basalt, and Older Bedrock.

The data files listed below are supplemental to the USGS Scientific Investigations Report 2010-5246 titled 'Three-dimensional model of the geologic framework for the Columbia Plateau Regional Aquifer System, Idaho, Oregon, and Washington.' The report includes a description of methods used to derive the data.

Click on the links below to download files (see Explanation of spatial data formats).

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Page Last Modified: Tuesday, 03-Jan-2017 20:45:28 EST