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Active Incidents

Golden Mussels Invasion

On April 28, 2026, the San Joaquin County Board of Supervisors proclaimed a local emergency in response to the growing threat posed by the invasive golden mussel in the Sacramento-San Joaquin Delta (Delta), urgently calling for strengthened State partnership, additional resources, and coordinated action to protect one of California’s most vital waterways.

Evacuation Zones

During an active emergency, evacuation zones will appear here. Currently, there are not zones under an evacuation order.

Road Closures

More information on County road closures can be found by going to the County's Public Works' Road & Lane Closure page.

Incident information will be available on this page when an emergency is proclaimed in San Joaquin County.

3 Ways to Report Flooding on County Roads

File a report on NEXGEN 311 app.
Submit a report of Roadway Flooding | sjcdpw.public.311service.com
Call (209) 468-3074

For city roads, please contact your local public works department.