Inspection Rating for Walnut Creek Levee Systems

Inspections by the U.S. Army Corps of Engineers, Sacramento District, have shown a need for Contra Costa County to address important maintenance issues of the levee system along sections of Walnut Creek near Concord and Pacheco.

The Sacramento District conducted periodic inspections of the Walnut Creek levees near Clayton Valley Drain and Grayson Creek during January 2013.

The inspections resulted in a maintenance rating of unacceptable. The most serious deficiencies indentified throughout the systems were encroachments, animal control and erosion. Unacceptable vegetation was also noted during inspections but did not result in an overall unacceptable inspection rating.

Levee inspections are all about making sure that a levee can reliably do what we expect it to,” said Ryan Larson, Sacramento District levee safety program manager. “Our findings help the agencies that own and maintain these levees prioritize levee fixes—and help the public understand their flood risk and make informed decisions about protecting their property.”

Representatives of Contra Costa County Flood Control & Water Conservation District, who maintain the levee systems, received a draft report of the findings for review and comment in March 2014. The final report was signed in October 2014.

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