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Hydrogeologic implications of increased septic-tank-soil-absorption system density, Ogden Valley, Weber County, Utah

By:  and 
Edited by: Robinson Lee

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Abstract

Ground water in Ogden Valley occurs in perched, confined, and unconfined aquifers in the valley fill to depths of 600 feet and more. The confined aquifer, which underlies only the western portion of the valley, is overlain by cleyey silt lacustrine sediments probably deposited during the Bonneville Basin's Little Valley lake cycle sometime between 90,000 and 150,000 years ago. The top of this cleyey silt confining layer is generally 25 to 60 feet below the ground surface. Unconfined conditions occur above and beyond the outer margin of the confining layer. The sediments overlying the confining layer are primarily Lake Bonneville deposits. Water samples from springs, streams, and wells around Pineview Reservoir, and from the reservoir itself, were collected and analyzed. These samples indicate that water quality in Ogden Valley is presently good. Average nitrate concentrations in the shallow unconfined aquifer increase toward the center of Ogden Valley. This trend was not observed in the confined aquifer. There is no evidence, however, of significant water-quality deterioration, even in the vicinity of Huntsville, a town that has been densely developed using septic-tank-soil-absorption systems for much of the time since it was founded in 1860.

Suggested Citation

Lowe, M., and Miner, M.L., 1990, Hydrogeologic implications of increased septic-tank-soil-absorption system density, Ogden Valley, Weber County, Utah, Proceedings of the 1990 Annual Symposium on Engineering Geology & Geotechnical Engineering, Pocatello, ID, USA, 4 April 1990 through 6 April 1990.

Publication type Conference Paper
Publication Subtype Conference Paper
Title Hydrogeologic implications of increased septic-tank-soil-absorption system density, Ogden Valley, Weber County, Utah
Year Published 1990
Language English
Publisher Publ by Idaho State University
Publisher location Pocatello, ID, United States
Conference Title Proceedings of the 1990 Annual Symposium on Engineering Geology & Geotechnical Engineering
Conference Location Pocatello, ID, USA
Conference Date 4 April 1990 through 6 April 1990
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