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Flood — Contra Costa, CA

Mar 6, 2024

Scattered thunderstorms developed on March 6 and caused flooding in several areas. The most intense flooding occurred near Salinas and Prunedale, where a stationary thunderstorm developed around 12 Noon. This storm produced torrential rainfall with one observer in North Salinas reporting 1 of rain in 25 minutes.

Source: NOAA National Weather Service Storm Events Database (event 1155802). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Contra Costa, CA

This event is one of many recorded floods in Contra Costa County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Contra Costa County flood data →

More Flood Stories

Flood$22.0M damage

Contra Costa, CA · Dec 31, 2005

Widespread county flooding occurred after 2 to 4 inches of rain fell on the area in about 24 hours. Urban flooding initiated landslides that contributed to the damage, and small streams and creeks overflowed their banks.

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Flood$22.0M damage

Contra Costa, CA · Jan 1, 2006

Widespread flooding continued into early 2006 after very heavy rains through December 31st brought 3 to 4 inches in a 24 hour period. Urban flooding initiated landslides that contributed to the damage, and small streams and creeks overflowed their banks.

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Flood$250K damage

Contra Costa, CA · Dec 2, 2012

A series of significant winter storms impacted the district during late November and early December 2012. The first storm arrived November 28 and then was followed by three more winter storms.

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Flash Flood$100K damage

Contra Costa, CA · Feb 13, 2000

Widespread rain with twenty four hour accumulations of more than 5 inches occured over the area on Feb 13 into February 14th. Urban and small stream flooding occured in nost counties of the area. Many roads including Hwy 1 and Hwy 116 were closed.

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