Flood Control District

Announcement for the 10th annual Giving Natives a Chance planting event.

Join us for the 10th Annual Giving Natives a Chance Planting Event!

Saturday, December 10, 2022

9:00AM - 12:00PM

Join the Contra Costa Flood Control District for a fun morning outdoors, planting natives grasses with fellow community members! The event is an unique opportunity to learn about and plant native grasses while also removing invasive species, helping to improve our community and restore the local ecosystem. 

Please visit our Giving Natives a Chance Webpage Giving Natives a Chance Webpage for additional details or visit our Eventbrite page to Reserve Your Spot!


You can find our office in the Contra Costa Public Works Department Building at:

255 Glacier Drive
Martinez, CA 94553
Phone: 925-313-2000
Fax: 925-313-2333

Please visit the general Public Works Department page for postings of general information and office hours. We can also be reached by email

If you need to report flooding in the unincorporated county, please contact our Maintenance division at 925-313-7000. If you have drainage fee questions, please call 925-313-2000 and ask for the Flood Control Counter Duty staff member.

The Flood Control and Water Conservation District covers all of Contra Costa County, including its cities, and owns property throughout the county for the purpose of constructing and maintaining regional flood control facilities, including approximately 79 miles of channels, creeks, and other drainage and 30 detention basins and dams. 

The District was formed in 1951, and has been protecting the communities of Contra Costa County ever since. The District offers regional flood protection, and also provides technical information and education to cities and residents. Its operations are primarily funded through property taxes and developer fees. Please explore our website to learn more about the services that the District offers.