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Flood — Contra Costa, CA

Feb 18, 2024

Two storm systems impacted central California From February 17 to 20. A quickly-moving cold front came through the region on the 17th, causing minor nuisance flooding and gusty winds. A second, deeper but slower moving, system followed the next day with widespread rain and gusty winds. A warm front associated with this low came through the region late on Sunday the 18th, followed by the associated cold front and associated thunderstorms on Monday the 19th. With the longer period of rainfall and

Source: NOAA National Weather Service Storm Events Database (event 1155003). 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.

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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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