Columbia Plateau Regional aquifer system Completed
The Columbia Plateau regional aquifer system (CPRAS) covers parts of Idaho, Oregon, and Washington. It consists primarily of three basalt formations separated by confining units.
The primary aquifers of the Columbia Plateau regional aquifer system (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 Three-dimensional model of the geologic framework for the Columbia Plateau Regional Aquifer System, Idaho, Oregon, and Washington (USGS Scientific Investigations Report 2010-5246). The report includes a description of methods used to derive the data.
Click on the links below to download files for this aquifer. For information about the available file types, see Aquifer data: Explanation of spatial data formats.
Borehole Data: Metadata (25KB XML) Shapefile (880KB ZIP) Text file (238KB ZIP)
Hydrogeologic Unit Extents:
- Columbia River Basalt Metadata (26KB XML) Shapefile (310KB ZIP)
Hydrogeologic Unit Surfaces:
- Overburden (top) Metadata (25KB XML) Raster (7.7MB ZIP) ASCII grid (6.2 MB ZIP)
- Saddle Mountains Basalt (top) Metadata (25KB XML) Raster (6.2MB ZIP) ASCII grid (4.9MB ZIP)
- Wanapum Basalt (top) Metadata (25KB XML) Raster (12.5MB ZIP) ASCII grid (9.7MB ZIP)
- Grande Ronde Basalt (top) Metadata (25KB XML) Raster (21.2MB ZIP) ASCII grid (16.6MB ZIP)
- Older Bedrock (top) Metadata (25KB XML) Raster (26.9MB ZIP) ASCII grid (21.2MB ZIP)
Hydrogeologic Unit Thicknesses:
- Overburden Metadata (25KB XML) Raster (3.9MB ZIP) ASCII grid (3.3MB ZIP)
- Saddle Mountains Basalt and Mabton interbed Metadata (26KB XML) Raster (6.2MB ZIP) ASCII grid (5.3MB ZIP)
- Wanapum Basalt and Vantage/Latah interbed Metadata (25KB XML) Raster (12.4MB ZIP) ASCII grid (10.4MB ZIP)
- Grande Ronde Basalt Metadata (25KB XML) Raster (12.1MB ZIP) ASCII grid (17MB ZIP)
Below are other webpages associated with this aquifer.
Principal Aquifers of the United States
Regional Groundwater Availability Studies
Wells and water levels used in the Columbia Plateau Regional Aquifer System Study, Idaho, Oregon, and Washington
Below are publications associated with this aquifer.
Three-dimensional model of the geologic framework for the Columbia Plateau Regional Aquifer System, Idaho, Oregon, and Washington
Groundwater availability of the Columbia Plateau Regional Aquifer System, Washington, Oregon, and Idaho
Numerical simulation of groundwater flow in the Columbia Plateau Regional Aquifer System, Idaho, Oregon, and Washington
Hydrogeologic framework and hydrologic budget components of the Columbia Plateau Regional Aquifer System, Washington, Oregon, and Idaho
Ground Water Atlas of the United States
- Overview
The Columbia Plateau regional aquifer system (CPRAS) covers parts of Idaho, Oregon, and Washington. It consists primarily of three basalt formations separated by confining units.
Sources/Usage: Public Domain. View Media DetailsThe primary aquifers of the Columbia Plateau regional aquifer system (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 Three-dimensional model of the geologic framework for the Columbia Plateau Regional Aquifer System, Idaho, Oregon, and Washington (USGS Scientific Investigations Report 2010-5246). The report includes a description of methods used to derive the data.
Click on the links below to download files for this aquifer. For information about the available file types, see Aquifer data: Explanation of spatial data formats.
Borehole Data: Metadata (25KB XML) Shapefile (880KB ZIP) Text file (238KB ZIP)
Hydrogeologic Unit Extents:
- Columbia River Basalt Metadata (26KB XML) Shapefile (310KB ZIP)
Hydrogeologic Unit Surfaces:
- Overburden (top) Metadata (25KB XML) Raster (7.7MB ZIP) ASCII grid (6.2 MB ZIP)
- Saddle Mountains Basalt (top) Metadata (25KB XML) Raster (6.2MB ZIP) ASCII grid (4.9MB ZIP)
- Wanapum Basalt (top) Metadata (25KB XML) Raster (12.5MB ZIP) ASCII grid (9.7MB ZIP)
- Grande Ronde Basalt (top) Metadata (25KB XML) Raster (21.2MB ZIP) ASCII grid (16.6MB ZIP)
- Older Bedrock (top) Metadata (25KB XML) Raster (26.9MB ZIP) ASCII grid (21.2MB ZIP)
Hydrogeologic Unit Thicknesses:
- Overburden Metadata (25KB XML) Raster (3.9MB ZIP) ASCII grid (3.3MB ZIP)
- Saddle Mountains Basalt and Mabton interbed Metadata (26KB XML) Raster (6.2MB ZIP) ASCII grid (5.3MB ZIP)
- Wanapum Basalt and Vantage/Latah interbed Metadata (25KB XML) Raster (12.4MB ZIP) ASCII grid (10.4MB ZIP)
- Grande Ronde Basalt Metadata (25KB XML) Raster (12.1MB ZIP) ASCII grid (17MB ZIP)
- Science
Below are other webpages associated with this aquifer.
Principal Aquifers of the United States
This website compiles USGS resources and data related to principal aquifers including Aquifer Basics, principal aquifers maps and GIS data, and the National Aquifer Code Reference List.Regional Groundwater Availability Studies
Regional groundwater availability studies enable information about groundwater to be integrated and consistent, so that this resource can be analyzed and understood on an aquifer–wide scale. These studies provide decision–makers with a better understanding of the status and trends in the Nation's groundwater availability. - Data
Wells and water levels used in the Columbia Plateau Regional Aquifer System Study, Idaho, Oregon, and Washington
These data describe the wells and groundwater level elevations compiled for the Columbia Plateau Regional Aquifer Study (CPRAS). The well data included are well ids used in the study, the X and Y coordinates of each well, in feet, in Washington State Plane South NAD 1983 coordinate system (zone 4602), land-surface elevation, in feet, of each well in North American Vertical Datum of 1988 (NAVD 88), - Publications
Below are publications associated with this aquifer.
Three-dimensional model of the geologic framework for the Columbia Plateau Regional Aquifer System, Idaho, Oregon, and Washington
No abstract available.AuthorsErick R. Burns, David S. Morgan, Rachael S. Peavler, Sue C. KahleGroundwater availability of the Columbia Plateau Regional Aquifer System, Washington, Oregon, and Idaho
The Columbia Plateau Regional Aquifer System (CPRAS) covers about 44,000 square miles of southeastern Washington, northeastern Oregon, and western Idaho. The area supports a $6-billion per year agricultural industry, leading the Nation in production of apples, hops, and eight other commodities. Groundwater pumpage and surface-water diversions supply water to croplands that account for about 5 percAuthorsJ. J. Vaccaro, S. C. Kahle, D.M. Ely, E.R. Burns, D.T. Snyder, J.V. Haynes, T. D. Olsen, W.B. Welch, D. S. MorganNumerical simulation of groundwater flow in the Columbia Plateau Regional Aquifer System, Idaho, Oregon, and Washington
A three-dimensional numerical model of groundwater flow was constructed for the Columbia Plateau Regional Aquifer System (CPRAS), Idaho, Oregon, and Washington, to evaluate and test the conceptual model of the system and to evaluate groundwater availability. The model described in this report can be used as a tool by water-resource managers and other stakeholders to quantitatively evaluate proposeAuthorsD. Matthew Ely, Erick R. Burns, David S. Morgan, John J. VaccaroHydrogeologic framework and hydrologic budget components of the Columbia Plateau Regional Aquifer System, Washington, Oregon, and Idaho
The Columbia Plateau Regional Aquifer System (CPRAS) covers an area of about 44,000 square miles in a structural and topographic basin within the drainage of the Columbia River in Washington, Oregon, and Idaho. The primary aquifers are basalts of the Columbia River Basalt Group (CRBG) and overlying sediment. Eighty percent of the groundwater use in the study area is for irrigation, in support of aAuthorsS. C. Kahle, D. S. Morgan, W.B. Welch, D.M. Ely, S.R. Hinkle, J. J. Vaccaro, L.L. OrzolGround Water Atlas of the United States
PrefaceThe Ground Water Atlas of the United States presents a comprehensive summary of the Nation's ground-water resources and is a basic reference for the location, geography, geology, and hydrologic characteristics of the major aquifers in the Nation. The information was collected by the U.S. Geological Survey and other agencies during the course of many years of study. Results of the Regional AAuthors