Flood Zones and Your Tax Bills

Flood Control Zones are funded by ad valorem (based on property value) taxes. Some Zones also have special assessments in addition to the ad valorem tax. We have prepared FAQs for special assessments in these Zones/CSAs:
Flood Control Zone 1 (Novato)
Flood Control Zone 4A (Strawberry Circle)
Flood Control Zone 9 (Ross Valley)
County Service Area 29 (Paradise Cay)

Keeping Our Heads Above Water

Floodplain Management Association 2014 conference logo

Two Flood Control staff members participated in the 2014 Floodplain Management Association conference with presentations on Aramburu Island Beach Restoration Project in Richardson Bay and on the Santa Venetia SWMM Hydraulic Model, a product of the Gallinas Watershed Program.

FMA is the premier statewide flood protection conference.


Stinson Beach AB and Community Meeting

Flyer for the September 24 Advisory Board and Community Meeting

The Advisory Board recommended ballot language and a resolution for a March 3, 2015 election. Visit the Stinson Beach Watershed page for more.

Santa Venetia Drainage Study Presentation

Map of stormdrains in Santa Venetia

Initial findings of the Drainage Study were presented to the Flood Control Zone 7 Advisory Board on September 3, 2014. Technical project reports are available on the Gallinas Watershed page.

Fish Passage Program

fish passage

Restoring fish passage
through County structures remains a high priority for Marin County Public Works. Since 2005, eight barrier removal projects have been completed and four more are in the design phase.
Click here to learn more.

White paper on Climate adaptation - sea level rise

1953 photo of San Rafael

The City of San Rafael has produced a white paper aimed at providing information useful for understanding sea level rise and moving forward to the next steps in long-range planning.



NEW! Become a Weather Observer

As part of California Flood Preparedness Week, Marin County is hosting a training for members of the public to learn how to assist the National Weather Service (NWS) with its precipitation data collection. Participants will learn how to become volunteer weather observers, what data will be collected, what equipment is necessary, and what the program requirements are.

Friday, October 24th
4:00 - 5:00 PM
3501 Civic Center Drive, Room 330
San Rafael, CA 94903
More Information
Volunteer Flyer

Marin Project Coordination Meetings

Image of the flyer for the Project Coordination Meeting.Marin County has monthly project coordination meetings to review and
guide projects through the environmental and regulatory permit process.

Find out more.

Use of Horizontal Levees for Natural Flood Protection

Graphic of horizontal levee

The Bay Institute has prepared a report on the benefits of restoring tidal marshes, including the creation of horizontal levees for natural flood protection.

View the report


NEW! Marin County Board of Supervisors declares Flood Preparedness Week

The Marin County Board of Supervisors declared October 20-25 as California Flood Preparedness Week. Marin joins other counties and the California Department of Water Resources (DWR) in this effort to promote preparation for potential flooding. DWR has created flood vulnerability maps and additional information and links have been posted on the Flood Preparedness page on the Marin Watersheds website.

PBS Video: Sea Level Rise and the Benefits of Restored Wetlands

Shore birds at restored wetlands

PBS NewsHour has produced an 8-minute video highlighting benefits of a South Bay marsh and wetlands restoration. Similar, though smaller, projects are being considered by the Gallinas and Novato Watershed Programs to reduce flooding risk and increase resiliency to sea level rise.

View the video.

See the Novato Watershed page for more details.

Drawing of waves

High tides to watch

Days with tides predicted to be at or above 6.5 feet.

2014 year: November 5th, 6th, and 7th. December 3rd through the 6th, and 20th through the 23rd.

View NOAA's Tides & Currents website for more information.