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Test wells in central Washington, 1977 to 1979; description and results

Water-Resources Investigations Report 83-4259

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Abstract

During the period October 1977-March 1979, four wells were added to a network of wells in central Washington State to provide information on potential sources of ground-water supplies from aquifers in the Columbia River Basalt Group and supplemental ground-water data for water-management purposes where they cannot be obtained by other means. Two were drilled in the Yakima River canyon between Ellensburg and Yakima--one to 602 feet in the Burbank Creek valley and the other to 1,019 feet near the mouth of Umtanum Creek. A third well was drilled to 725 feet in the Badger Pocket area of the Ellensburg-Kittitas valley. A test well near George, Washington, was deepened from 975 to 1,610 feet and three piezometers were installed in this interval. The Burbank Creek, Umtanum Creek, and George test wells are completed in basalts and associated interflow zones of the Yakima Basalt Subgroup of the Columbia River Basalt Group. The Badger Pocket well penetrated more than 725 feet of unconsolidated materials without reaching the basalt. Specific capacities of the Umtanum Creek and George wells after 20 hours of pumping were 190 and 160 to 190 gallons per minute per foot of drawdown, respectively. Specific capacity of the Burbank Creek well after flowing for 24 hours was 32.5 gallons per minute per foot of drawdown. The Badger Pocket well was not tested for water yield. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Test wells in central Washington, 1977 to 1979; description and results
Series title:
Water-Resources Investigations Report
Series number:
83-4259
Edition:
-
Year Published:
1985
Language:
ENGLISH
Publisher:
U.S. Geological Survey, WRD,
Description:
vi, 48 p. :ill., maps ;28 cm.