Extent and depth to top of basalt and interbed hydrogeologic units, Yakima River Basin aquifer system, Washington
Scientific Investigations Report
2008-5045
By: M. A. Jones and J. J. Vaccaro
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Abstract
The hydrogeologic framework was delineated for the ground-water flow system of the three basalt formations and two interbeds in the Yakima River Basin, Washington. The basalt units are nearly equivalent to the Saddle Mountains, Wanapum, and Grande Ronde. The two major interbed units between the basalt formations generally are referred to as the Mabton and Vantage.
The basalt formations are a productive source of ground-water for the Yakima River Basin. The Grande Ronde unit comprises the largest area in the Yakima River Basin aquifer system. This unit encompasses an area of about 5,390 mi2 and ranges in altitude from 6,900 ft, where it is exposed at land surface, to a depth of 2,800 ft below land surface. The Wanapum unit encompasses an area of 3,450 mi2 and ranges in altitude from 5,680 ft, where exposed at land surface, to a depth of 2,050 ft below land surface. The Saddle Mountains unit, the least extensive, encompasses an area of 2,290 mi2 and ranges from 4,290 ft, where exposed at the surface, to a depth of 1,840 ft below land surface.
Suggested Citation
Jones, M., Vaccaro, J.J., 2008, Extent and depth to top of basalt and interbed hydrogeologic units, Yakima River Basin aquifer system, Washington: U.S. Geological Survey Scientific Investigations Report 2008-5045, Report: vi, 22 p.; 5 Plates: 30 x 36 inches, https://doi.org/10.3133/sir20085045.
ISSN: 2328-0328 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Extent and depth to top of basalt and interbed hydrogeologic units, Yakima River Basin aquifer system, Washington |
| Series title | Scientific Investigations Report |
| Series number | 2008-5045 |
| DOI | 10.3133/sir20085045 |
| Year Published | 2008 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Washington Water Science Center |
| Description | Report: vi, 22 p.; 5 Plates: 30 x 36 inches |
| Country | United States |
| State | Washington |
| Other Geospatial | Yakima River basin |
| Additional Online Files (Y/N) | Y |