Salt Lake City, Utah
Released On: January 14, 2004
In 1990, a Rehabilitation and Betterment (R&B) Program was started to repair a number of features at the dam that had deteriorated due to age. The work included spillway maintenance and refurbishment of radial gates, hoists and the gate electrical control system. As a result of a 2003 Comprehensive Facility Review of Hyrum dam, questions were raised about stilling basin and spillway chute integrity, as well as voids along the lower ends of the spillway walls. Further investigations with ground penetrating radar revealed several voids as well as a broken open - joint clay tile pipe beneath the spillway.
The anticipated remedial repairs consist of inserting filtered drain pipes into the existing toe drain system, drilling holes through the spillway floor and wall slabs, injecting sand or grout slurry into the voids, monitoring the floor slabs for movement.
DOI | Recreation.gov | USA.gov
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