California Audit Reveals $28B Dam Repair Gap Amid Record El Niño Threat

Key points

• The State Auditor found 57 dams in poor or unsatisfactory condition as of May 2026, with 40 rated as high or extremely high hazard.
• The 40 riskiest dams cluster near densely populated coastal cities, including the Bay Area, San Diego, and Los Angeles.
• Failure of these dams could endanger up to 1.5 million people and cause over $265 billion in economic damage.
• The Department of Water Resources has never used punitive enforcement actions against dam owners despite having the authority since 2017.
• Repairing the state's less-than-satisfactory dams is estimated to cost $28 billion, far exceeding the $464 million from a 2024 ballot proposition and $629,198 from a FEMA grant.

Background

This audit follows a series of warnings about the 2026 El Niño, which has broken Pacific temperature records and is forecast to bring 150-200% of normal rainfall to California. Previous coverage noted that local governments are declaring emergencies to prepare for flooding, while the 2017 Oroville spillway failure, which forced the evacuation of nearly 200,000 people, led to the current enforcement laws.

How outlets are covering it

While NBC News and CalMatters report the same core audit findings, emphasizing the state's failure to enforce safety laws and the massive funding gap, American Rivers offers a broader perspective. They argue that California needs to shift from solely repairing 'gray' infrastructure like dams to investing in 'green' infrastructure, such as restoring rivers and watersheds, to better manage water extremes. American Rivers highlights that many dams are obsolete and that natural systems can reduce flood risk and improve water security, a viewpoint not emphasized in the audit-focused reporting.

Why it matters

The combination of aging infrastructure, insufficient funding, and a record-breaking El Niño creates a significant public safety risk. The audit highlights a systemic failure in enforcement and planning, with 245 dams lacking approved emergency plans. As extreme weather events become more frequent, the inability to repair or decommission dangerous dams could lead to catastrophic flooding and economic losses, underscoring the need for a more resilient water management strategy.

What to watch

The audit urges the state legislature to set deadlines for dam owners to submit maintenance plans and to expand the Department of Water Resources' enforcement authority, including the power to order the condemnation and decommissioning of non-compliant dams. The Department of Water Resources is reviewing the recommendations and preparing for the El Niño winter, but the funding gap remains a critical challenge.