The Modification of Leroy Anderson Dam

by S. T. Su, Tudor Engineering Co, United States,
G. Thomas Dean, Tudor Engineering Co, United States,
Kenneth V. Rodda, Tudor Engineering Co, United States,

Document Type: Proceeding Paper

Part of: Waterpower '89


An extensive modification program has been implemented to improve the safety and enhance the performance of the Leroy Anderson Dam. The Leroy Anderson Reservoir has a maximum storage of 91,000 acre-feet and is the largest reservoir in Santa Clara Valley Water District's water supply system. The modification program consists of raising the crest of the embankment dam to meet the current freeboard requirement, enlarging the spillway to safety pass the probable maximum flood, and installing a new multiport intake structure to ensure a reliable supply of water. In addition, an 800-kW small hydroelectric power plant for energy recovery has been constructed. This paper presents the actual experience on the design and construction of the modfication works.

Subject Headings: Water intakes | Power plants | Dams | Embankment dams | Spillways | Water storage | Reservoirs | Floods

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