California's Aging Dams Pose Risk Amid Approaching El Niño Winter
California's Aging Dams Pose Risk Amid Approaching El Niño Winter
US · Published Oct 15, 2026
• California's State Auditor has raised concerns about the safety of the state's aging dams as an El Niño winter approaches, bringing the threat of heavy rainfall.
• An audit revealed that 57 dams were in poor or unsatisfactory condition as of May 2026, with 40 of these classified as high or extremely high hazard.

Impact & Risks

The failure of high-risk dams could endanger up to 1.5 million people and result in economic damages exceeding $265 billion. The areas most at risk include densely populated regions near the Bay Area, San Diego, and Los Angeles. The potential for heavy rainfall during the El Niño winter heightens the urgency of addressing these safety concerns. The lack of enforcement actions against non-compliant dam owners further exacerbates the risk to public safety and infrastructure.

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