Salt Lake City, Utah
Released On: November 23, 2004
Reclamation drill crews and geologists will begin the exploration program of the foundation of the dam in December 2004 with the initial investigations anticipated to be finished within approximately two weeks. Depending on the results of the initial investigations of the foundation, which consists of clay, silt, sand and gravel, additional explorations may be required and would be expected to be performed during the spring of 2005.
The purpose of the investigations is to evaluate the potential for liquefaction of foundation alluvial materials during an earthquake. Liquefaction is the changing of loosely packed, saturated sediment from a solid into a liquid state. An earthquake of sufficient magnitude could cause liquefaction, compromising the integrity of the dam.
Wanship Dam is located in Summit County, Utah, on the Weber River. The dam provides storage for irrigation water and year-round power generation. The dam, completed in 1957, as part of the Weber Basin Project, is a zoned earth-fill dam. It is 175 feet high and 2015 feet long and impounds a reservoir of 62,120 acre-feet.
DOI | Recreation.gov | USA.gov
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