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C. 9

To:	Contra Costa County Flood Control District Board of Supervisors
From:	Brian M. Balbas, Public Works Director/Chief Engineer
Date:	December 6, 2022

Contra

Costa

County

Subject:

Amendment to the Agreement with the California Department of Water Resources: Flood Emergency Response Projects Grant Program — Statewide.

APPROVE	OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR	RECOMMENDATION OF BOARD COMMITTEE

Action of Board On: 12/06/2022

APPROVED AS RECOMMENDED

OTHER

Clerks Notes:

VOTE OF SUPERVISORS

AYE:

John Gioia, District I Supervisor
Candace Andersen, District II Supervisor
Diane Burgis, District III Supervisor
Karen Mitchoff, District IV Supervisor
Federal D. Glover, District V Supervisor

Contact:	Mark Boucher, (925) 313-2274
cc:	Allison Knapp, Deputy Chief Engineer Tim Jensen, Flood Control Mark Boucher, Flood Control Catherine Windham, Flood Control

I hereby certify that this is a true and correct copy of an action taken and entered on the minutes of the Board of Supervisors on the date shown.
ATTESTED: December 6, 2022
Monica Nino, County Administrator

BY:	, Deputy

RECOMMENDATION(S):

Acting as the governing body of the Contra Costa County Flood Control and Water Conservation District (Flood Control District), APPROVE and AUTHORIZE the Chief Engineer, or designee, to execute an amendment to the agreement with the California Department of Water Resources: Flood Emergency Response Projects Grant Program — Statewide, to extend the term through April 29, 2024, with no change in the grant amount, Concord, Danville, Martinez, Pacheco, Pinole, Pleasant Hill, Rodeo, San Pablo, Richmond, and Walnut Creek areas.

FISCAL IMPACT:

The amount of the $374,000 grant from the State will not be increased. Any incidental costs associated with the project and not covered by the grant will be paid for by Flood Control District funds (Project No. 7505-6F8117).

BACKGROUND:

In 2014, the County applied for and received a grant from the Department of Water Resources for $206,500 under the first round of the Flood Emergency Response Projects Grant Program — Statewide: State Contract No. 4600012938. This grant was for 10 stream gauges to be installed on nonlegal Delta streams and for our RainMap webpage (www.cccounty.us/RainMap). The work on that project was completed in December 2017. We were able to find cost savings for some materials and amend the grant agreement to add one stream gauge for a total of 11 new stream gauges under that grant.

On February 4, 2020, the Board of Supervisors approved a second grant agreement with the State of California in the amount of $374,000 for the establishment of flood-stage elevations at 12 of our stream gauges. We are continuing to perform records research, field and office surveying, and computer modeling to establish the elevations at each stream gauge where we estimate flooding could occur in the general area upstream and downstream of the stream gauges.

The established flood-stage elevations will be shown on plots on our RainMap so that the general public will be able to view the stream stages and see how close to flood stage the streams are. It will heighten the public’s awareness of the stream conditions during areawide flood watches that are proclaimed by the Department of Water Resources and/or the National Weather Service. We will also communicate these flood stages and stream gauge information with the County Office of Emergency Services and other jurisdictions, such as cities and park districts.

The Flood Control District requested, and the State Department of Water Resources agreed, that the agreement be amended to extend the term one year due to a COVID-19 related start delay, staffing attrition, and staffing changes that reduced the availability of qualified staff to work on the project.

CONSEQUENCE OF NEGATIVE ACTION:

Without the Board of Supervisors’ approval, the Flood Control District may not be able to complete the grant funded project by the original deadline and may be required to return grant funds already received for the project.