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Ground water in the northern part of Clackamas County, Oregon

Open-File Report 80-1049

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Abstract

The number of domestic wells and domestic-water use have increased rapidly since 1960 in the 250-square-mile study area southeast of Portland, Oregon. The rolling upland area is underlain by volcanic and stream-deposited rocks, all units of which serve as aquifers locally. Depths of wells range from less than 50 to more than 1,000 feet and yields from less than one to several hundred gallons per minute. Local recharge rates are judged to be adequate for any forseeable projected development for domestic water supplies. Wells are expected to yield adequate water for domestic needs nearly everywhere in the study area. However, some exploration, as by test drilling, may be needed in siting irrigation, industrial, or public-supply wells of moderate to high yield. Additional ground water can be developed from all aquifers, but the Columbia River Basalt Group is considered susceptible to problems of overdevelopment locally. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Ground water in the northern part of Clackamas County, Oregon
Series title:
Open-File Report
Series number:
80-1049
Edition:
-
Year Published:
1983
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
v, 107 p. :ill., maps ;28 cm.