October 16, 2019
Seismic retrofit of Lake Perris Dam shifts to second phase
LAKE PERRIS (INT) The second phase of the Lake Perris seismic retrofit project is underway.

Construction of the outlet tower bridge began Wednesday connecting the tower to the shoreline. It will allow for operation of the control valves for release of water under normal and emergency situations.

Still to come, construction of a new control building, installation of a new gate, installation of seismic and security monitoring equipment and installation of new hydraulic power units.

The third and final phase at Perris Dam will focus on the Emergency Release Facility (ERF) and is planned for completion in 2023, according to the State Department of Water Resources.

The Lake Perris Dam was identified as a high priority concern due to its proximity to nearby earthquake faults and large downstream communities. The seismic retrofit to Perris Dam began in 2005 to improve seismic stability and enhance public safety.

Lake Perris is the southern terminus of the State Water Project.
Story Date: October 10, 2019
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