| 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) |
| Genre: | USGS Numbered Series |
| ProdID: | 10000 |
| Citation Author: | Leonard, A. R.; Collins, C. A. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | v, 107 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 80-1049 |
| Citation Search Results Text: | Ground water in the northern part of Clackamas County, Oregon; 1983; OFR; 80-1049; Leonard, A. R.; Collins, C. A. |
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| Citation Year: | 1983 |
| Type: | citation/reference |
| Text: | Ground water in the northern part of Clackamas County, Oregon; 1983; OFR; 80-1049; Leonard, A. R.; Collins, C. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
