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Aerial view of San Anselmo creek channel, showing gravel, low flow water, and vegetation.

Second EIR Addendum Available for Review

Posted on November 3, 2023

The Marin County Flood Control & Water Conservation District has been working for the past several years on the San Anselmo Flood Risk Reduction (SAFRR) Project, which is a significant effort to protect lives and property during severe storms.   In 2018, the Board of Supervisors certified the Environmental Impact Report (EIR) for the Project.  ...
Partially flooded roadway near an intersection with cars.

High Tides Expected Over Next Few Months

Posted on October 24, 2023

For Immediate Release - San Rafael, CA - Seasonal tide levels could impact areas with history of localized flooding Seasonal high tides can cause flooding along shoreline communities and low-lying roads in Marin County. Tide-related flooding can happen whether it is raining or not, but the flooding can increase significantly if the elevated tides occur...
Creek clearing activities shown in Novato Creek

Storm Season Preparations Completed

Posted on October 18, 2023

For Immediate Release - San Rafael, CA - County conducted annual maintenance work ahead of potentially wet winter The intense rainstorms that hit Marin in January 2023 caused significant impacts across the county. The breadth of the damage caused by the storms, also known as atmospheric rivers, spurred the Marin County Board of Supervisors to declare...
Drainage culvert made of concrete, covered by grass overgrowth and in need of maintenance.

Driveway culvert maintenance, who’s responsibility is it?

Posted on September 26, 2023

Did you know that pavement damage, soil erosion, and mudslides can be caused by blocked stormwater flow across driveways or under driveways via culverts? If leaves or other waste block the flow of stormwater runoff, then the water gets redirected and can cause serious flooding and/or localized erosion. Those issues can lead to road closures...
Map produced by first community meeting for Marin City Stormwater Plan.

Marin City Residents Participated in the First Community Meeting for Stormwater Plan

Posted on July 10, 2023

Community engagement is key to getting the information necessary to create flood risk reduction options for Marin City, an unincorporated neighborhood near Richardson Bay! The Marin County Flood Control and Water Conservation District obtained great input from the community during the June 1st community meeting at Martin Luther King Jr Academy. The input will help...
Flyer for the first community meeting for the Marin City Stormwater Plan. There's the logo for the Flood Control District and a photo of a flooded street in Marin City.

Marin City Residents Invited to First Community Meeting for Stormwater Plan

Posted on May 30, 2023

Community engagement is key to creating flood risk reduction options! The Marin County Flood Control and Water Conservation District is seeking input from the community to develop a Stormwater Plan which will identify options for flood risk reduction in Marin City, an unincorporated neighborhood near Richardson Bay. Community members are invited to share first-hand experiences...
Street intersection in Marin City flooding during a strom.

Let’s Plan Together to Reduce Flooding in Marin City — Community Meeting Announcement

Posted on May 4, 2023

The Marin County Flood Control District is exploring options to reduce flood risk in Marin City and your help is needed to design a community-centered Stormwater plan. During storm season and high tides, the Marin City neighborhood is regularly impacted by flooding tied to challenging drainage issues. This flooding may worsen and occur more frequently...
Google Earth image of Richardson Bay watershed and Marin City.

Community Input Key to Marin City Stormwater Plan

Posted on March 21, 2023

For Immediate Release – San Rafael, CA – Engagement is crucial element in identifying flood risk reduction solutions This spring, the Marin City community is invited to share its own ideas and first-hand experiences with flood control specialists tasked with reducing flood risk and related inconveniences for the area. During storm season and high tides,...
Car driving through flooded roadway.

Portable Pump Station Proposed for Marin City

Posted on March 16, 2023

For Immediate Release – San Rafael, CA – State funding to reduce flooding severity on Donahue Street Marin City residents and visitors, chronically hampered by roadway flooding during severe storms and high tides, could find some transportation relief by next winter if a proposed portable pump station is approved on March 21. The planned project...
Marin County Flood Control District logo

Santa Venetia Floodwall Project Update to be Presented

Posted on March 2, 2023

For Immediate Release – San Rafael, CA – Flood Control District consultant to provide revised design plan and cost estimate at Board session on March 7 At its March 7 public session, the Marin County Flood Control and Water Conservation District Board of Supervisors will receive an update[PDF] on the proposed Santa Venetia Floodwall Project. The goal of the...
Aerial view of the current state of progress at the Sunnyside Flood Detention Basin Project, showing construction vehicles on a large area of dirt.

Progress update on Sunnyside Flood Detention Basin Project

Posted on November 21, 2022

Work is progressing nicely with the detention basin at the former Sunnyside Nursery, located at 3000 Sir Francis Drake Boulevard. It is nearing completion and it will be operational this rainy season. Once completed, the detention basin will hold stormwater overflows from Fairfax Creek during peak storm events by having water spill over a side...
Cleared out water channel after maintenance work in Flood Zone 3.

Flood Zone 3 Maintenance Update, Fall 2022

Posted on November 18, 2022

In Flood Control Zone 3, which covers portions of Mill Valley, Marin City, and Tamalpais Valley, preventative maintenance for all five pump stations takes place every year and includes the inspection, testing, and as needed replacement of electrical and mechanical components. All pump station back-up generators have been run-tested and the fuel checked and maintained...
upstream end of East Creek following sediment removal in September.

Flood Zone 4 Maintenance Update, Fall 2022

Posted on November 14, 2022

In Flood Zone 4, which covers portions of Tiburon and Strawberry, preventive maintenance at all pump stations takes place every year and includes the inspection, testing, and as needed replacement of electrical and mechanical components.  Maintenance was completed in September, and all pump station back-up generators were run-tested, the fuel checked and maintained as needed....
Flood Logo Horizontal 01

Flood Zone 7 Update: Sheet Pile Test and Upcoming Board of Supervisors Meeting

Posted on November 10, 2022

The Marin County Flood Control and Water Conservations District would like to inform you that the design test for the proposed Santa Venetia Levee Upgrade Project was a success. Conducted during the first week of November, the design crew tested sheet pile installation near Pump Station #5. However, the District will not be presenting an...
Sample screenshot of the new online Sea Level Rise Viewer app available on Marin Map

New online Sea Level Rise Viewer provides interactive way to explore potential future impacts to Marin

Posted on November 9, 2022

  For more than a decade, online sea level rise viewers have helped people visualize what future sea level rise may look like. Many online viewers exist with different data sets and geographies, but it can be hard to find one that offers a hyper local look at potential future shoreline flooding in a user-friendly...
Partially flooded roadway near an intersection with cars.

High Tides Expected Over Next Few Months

Posted on October 31, 2022

For Immediate Release - San Rafael, CA - Seasonal elevated levels could impact areas with history of localized flooding Seasonal high tides can cause flooding along shoreline communities and low-lying roads in Marin County. Tide-related flooding can happen whether it is raining or not, but flooding can increase significantly if the elevated tides occur during...
Creek clearing activities shown in Novato Creek

Annual Storm Season Preparations Completed

Posted on October 17, 2022

For Immediate Release - San Rafael, CA - Despite drought conditions, County prepares for potential rainy season Along with many parts of the country, Marin County continues to endure one of the most extensive droughts on record. Despite the drought conditions, the possibility of an atmospheric river storm remains a reality and poses a flood...
Example of different devices showing the new Flood Control District website

Flood Control District Launches New Website

Posted on October 4, 2022

For Immediate Release - San Rafael, CA - New platform provides people of Marin with an improved online experience intended to evolve with the needs of our community In its commitment to deliver reliable and quality services and programs as a transparent, modern government organization,  the Marin County Flood Control & Water Conservation District has...
People help guide stormwater pump into place at a County-operated pump station.

Flood Zone 7 Maintenance Update, Summer 2022

Posted on September 13, 2022

The Marin County Flood Control and Water Conservation District conducts regular maintenance activities throughout the year in each of the diverse Flood Control Zones in Marin. The various forms of maintenance work, whether it is for flood mitigation infrastructure or targeted vegetation control, is a critical part of flood risk reduction for each respective community....
Crane positions a large stormwater pump into place at a County pump station.

Flood Zone 3 Maintenance Update, Summer 2022

Posted on September 12, 2022

Staff of the Marin County Flood Control and Water Conservation District conduct regular maintenance activities throughout the year in Flood Zone 3. Staff working for Flood Control Zone 3, which includes portions of Mill Valley, Marin City, and Tamalpais Valley, conduct preventative maintenance at all pump stations every year and their work includes the inspection,...
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