map of Ross Valley watershed

What's Happening Now:


Learn about & stay connected with what's going on with specific projects.

Bridge Projects (Fairfax | Ross | San Anselmo)
Former Sunnyside Nursery Multi-Benefit Project
Lefty Gomez Dual-Use Facility
Lower Sleepy Hollow Creek Improvements (Morningside Neighborhood)
Phoenix Lake IRWM Project

Program Information

San Anselmo Flood Risk Reduction Projects
US Army Corps of Eng. Corte Madera Creek


View documents related to the work we've been doing. Can't find something you're looking for? Please email Zone 9 Engineer Felix Meneau at

Frequently Asked Questions (FAQs)
Program & Project Summary Sheets
Reports & Newsletters


Find out what happened at a community or board meeting.

Advisory Board Meetings
Board of Supervisors Meetings
Community Meetings

Events & Meetings

Next Flood Control Zone 9 Advisory Board Mtg

When: Tuesday May 16th, 7:00p

Where: Ross School, 9 Lagunitas Rd., Ross

San Anselmo Flood Risk Reduction Project EIR Public Scoping Meeting

A public scoping meeting for the San Anselmo Flood Risk Reduction Project EIR was held on April 20, 2017 at 7:00 PM at San Anselmo Town Hall. See the meeting presentation by clicking here.
Download the Notice of Preparation (NOP) document to obtain details for submitting written comments by the close of the NOP comment period at 4:00p on May 8, 2017.

Upcoming Community Workshops

San Anselmo Creek in downtown San Anselmo in November 2016

Mark your calendars for these upcoming community workshops. Each workshop will focus on status and information for the identified geographic area. Stay tuned for more details!




Winter is Coming! Are You Prepared?

Graphic of Winter is Coming brochure cover

Visit our Flood Preparedness page to learn about preparing for winter storms, watch instructional videos on how to build door dams, sign up for emergency news, find links to rain gauges, and more.

Project Update on USACE Corte Madera Creek Flood Risk Management Project Units 2, 3 and 4

Read the latest project update covering the status and next steps of the Unit 2, 3, and 4 project from the U.S. Army Corps of Engineers and Marin County Flood Control District.

2016 Spring/Summer Newsletter

Take a look at our Spring/Summer 2016 Newsletter!

Annual Creek Cleanup in Ross Valley

Several workers wearing hard hats work to clear a creekbed of large logsOvergrown vegetation, debris and concrete rubble was removed in San Anselmo Creek starting September 28 as part of annual maintenance. Read the full story.

Listen to the 9/28/16 KCBS radio interview that discussed the concrete debris removal along San Anselmo Creek


Real-Time Stream and Rainfall Gauges

Picture of a computer screen with rainfall graph

Webcams & Other Stream Gauges

Creek levels and web cameras in Fairfax, San Anselmo, and Ross (Courtesy of Ross Valley Fire Department)

Flood Preparedness

Learn more about what we do and you can do to help be prepared for flooding.

Sign up for emergency alerts from the Marin County Sheriff.

Assistance for Landowners

Browse resources for landowners related to gardens, native plants, construction, and projects around the home.