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)
Corte Madera Creek Flood Risk Management Project
Former Sunnyside Nursery Multi-Benefit Project
Lefty Gomez Dual-Use Facility
Lower Corte Madera Creek Levee Evaluation
Lower Sleepy Hollow Creek Improvements (Morningside Neighborhood)
Phoenix Lake IRWM Project

Program Information

San Anselmo Flood Risk Reduction Projects


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 Zone 9 Advisory Board:


November 18, 2017 10a Ross Site Tour of Frederick Allen Park Riparian Corridor

Join your fellow interested community members for a meeting & site tour of the proposed Frederick Allen Park conceptual plan on Saturday, November 18 from 10a-12 noon. Meet at the Ross Post Office for small group down the path. Take a look at the project FAQs.

July 15, 2017 Annual Fairfax Creek Cleanup & Creek Walk 9:30a-1:00p

Join your fellow nature enthusiasts in clearing out trash & debris, opening up the creek flow, and restoring natural habitat along Fairfax's creeks. Coffee, refreshments and work gloves provided; wear closed-toe shoes and sunscreen. Meet at Fairfax Community Center, 16 Park Rd., at 9:30a.

San Anselmo Ave. Building Bridge 2 & flood mitigation Meeting on May 3, 2017

The Town of San Anselmo hosted a community meeting from 7-8:30p at the San Anselmo Town Council Chambers to discuss potential plans for the building at 634-636 San Anselmo Ave (Building Bridge 2) and flood mitigation related to the San Anselmo Flood Risk Reduction Project.


Info on option to purchase 634 San Anselmo Ave in San Anselmo

Dept of Water Resources Grant (Previously Funding Phoenix Lake Project) Migrating to New Projects

As presented at the May and June Advisory Board meetings, the Phoenix Lake IRWM project is infeasible as proposed with the grant schedule and funding constraints. The District is proceeding forward with requesting migration of the grant funds to the Alternative C as identified in the June Advisory Board Presentation. DWR will review the grant amendment application (due 6/16) through 8/28. Join us for a public workshop on November 18, 2017.

Hydrologic Design Basis For The Ross Valley Capital Improvement Plan Study

Read this technical memorandum by Stetson Engineers, Inc. describing the hydrologic design basis (the “1% annual chance flood”) for the Ross Valley Capital Improvement Plan (CIP). Included is a discussion on the effectiveness of flood diversion & storage basins for longer duration rain events and larger flood flow events. The memorandum was peer-reviewed by staff from the Marin County Flood Control and Water Conservation District and a third-party engineering firm.


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.

Home Elevation Grant

View FEMA requirements

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