The California Department of Water Resources has begun construction on the Lake Perris Emergency Release Facility in Riverside County to help redirect water during an emergency.

The project, a portion of the Perris Dam Modernization Program, will include new levees, bridges and a drainage system downstream from the dam. With an anticipated finish in 2027, the first phase already completed the Perris Dam Remediation Project, which fixed the dam’s foundation.

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“As earthquakes and extreme weather events are a constant threat to our infrastructure, DWR continues to modernize our facilities to be resilient and protect the local community and California’s water supply,” said David Sarkisian, State Water Project dam safety services manager.

Lake Perris is the southmost State Water Project reservoir. The project falls under Gov. Gavin Newsom’s Build More, Faster agenda.