SACRAMENTO — October 21, 2026. A new California State Auditor report warns that delayed dam repairs, incomplete emergency plans and inadequate levee maintenance leave communities exposed to preventable flood risks. The October 13 report does not say that 40 dams are about to fail. Its central finding is that safety conditions, administrative delays and funding constraints have left risks unresolved for too long.
What the state auditors actually found
In Report 2025-603, the California State Auditor said that as of May 2026, 57 of the state’s 1,222 jurisdictional dams were rated in poor or unsatisfactory condition. Of these, 40 also carried high or extremely high downstream hazard classifications.
Those two classifications measure different things. A dam’s condition rating describes whether it meets safety standards; its hazard classification estimates the consequences to people and property if it failed. High hazard does not necessarily mean failure is probable or imminent. Conversely, a facility can appear in satisfactory condition while still having significant consequences in a hypothetical failure.
The audit says dam owners sometimes face costly repair projects but are not generally required by current law to accumulate reserves adequate for future safety work. California’s Department of Water Resources (DWR) oversees safety but, according to the auditor, has not made full use of its enforcement authority against deficient owners. A prolonged repair process can leave deficiencies outstanding even as the state uses restrictions or other interim risk measures.
Emergency action plans are a separate concern
The report identifies 60 dams with significant or higher downstream hazard classifications whose owners had not met legal requirements to create and submit emergency action plans. Such plans describe how dam owners and public-safety agencies should communicate and respond if a serious incident occurs. Not every dam listed in that group was among the 57 rated poor or unsatisfactory: missing paperwork and structural condition are separate problems.
The auditor criticized coordination between DWR and the Governor’s Office of Emergency Services (Cal OES) over emergency plans. Cal OES and the Central Valley Flood Protection Board agreed with the findings and said they would implement recommendations. DWR disputed many recommendations and did not clearly commit to implementing them, according to the report’s summary.
Why Central Valley levees matter
Dams are only half the story. California also depends on long levee networks across the Sacramento and San Joaquin river basins. Many are maintained by local agencies that include reclamation districts and other public or private entities, while DWR monitors the state-plan system.
The auditor found that nearly one-third of 102 local maintaining agencies in 2025 performed unacceptable routine levee maintenance. Funding was a recurring obstacle. DWR estimated that the state and local maintaining agencies together need at least $165 million more per year, on top of existing spending, to fully address maintenance over the next three decades.
The audit argues that California has legal tools to assume maintenance of some deficient levees but has not used them as required. That does not establish that every Central Valley levee is unsafe or that a particular neighborhood will flood this winter. It signals systemic weaknesses that require attention before an emergency.
What residents can verify for their own community
Residents should not use a statewide aggregate such as “40 dams” to guess whether their address is in a danger zone. Start by identifying the dam, levee district and watershed serving their area; then check the jurisdiction’s current inundation information and local emergency alert resources. A county floodplain map and a dam-failure inundation map answer different questions. Neither is a forecast of a particular dam failure.
- Find the responsible agency: Ask the county emergency management office whether nearby dams or levees have approved emergency action plans and what alerts apply to the neighborhood.
- Check current maps, not screenshots: Use the state’s Division of Safety of Dams and the relevant county or city for current information and public safety documents.
- Know the evacuation pathway: Sign up for local emergency notifications, identify more than one safe route where practical, and follow official orders. A map showing a possible flood extent is not itself an evacuation order.
- Ask about maintenance: If a levee protects a neighborhood, residents can ask their local maintaining agency when it was last inspected, what work remains and whether state or local funds have been allocated.
For residents of Butte, Sutter and Yuba counties, the 2017 Oroville spillway emergency shows why preparation matters: according to the auditor, about 188,000 people were evacuated during that incident. That historic event should not be treated as proof of a new emergency at Oroville in October 2026. For more local context, read California58’s Oroville spillway inspection report and its Feather River valve project coverage.
What should happen next?
The auditor urged lawmakers to strengthen dam-safety enforcement and emergency-plan deadlines, and called on DWR and Cal OES to use existing powers more consistently. The immediate accountability question is whether agencies publish measurable follow-up: completed emergency plans, resolved safety deficiencies, levee maintenance ratings, budgets and deadlines. California58 will track official implementation rather than interpret the audit as a prediction of failure.
Primary source: California State Auditor, Report 2025-603, published October 13, 2026. The report contains the agencies’ responses and the auditor’s recommendations. Article prepared from official records; no dam is declared imminently unsafe on the basis of this report alone.
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