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Spokane Valley-Rathdrum Prairie aquifer, Washington and Idaho

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Spokane Valley-Rathdrum Prairie aquifer, Washington and Idaho; 1977; OFR; 77-829; Drost, B. W.; Seitz, Harold R.

Summary

The Spokane Valley-Rathdrum Prairie aquifer is composed of unconsolidated Quaternary glaciofluvial deposits underlying an area of about 350 square miles. Transmissivities in the aquifer range from about 0.13 million to 11 million feet squared per day and ground-water velocities exceed 60 feet per day in some areas. The water-table gradient ranges from about 2 feet per mile to more than 60 feet per mile, and during a year the water table fluctuates on the order of 5 to 10 feet. For most of the aquifer the water table is between 40 and 400 feet below land surface. The aquifer is recharged and discharged at an average rate of about 1,320 cubic feet per second. Water is presently (1976) pumped from the aquifer at an average rate of about [...]

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Type Scheme Key
local-index unknown ofr77829
local-pk unknown 8624
series unknown Open-File Report

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citationTypeReport
edition-
journalOpen-File Report
languageENGLISH

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