Flood Control District Zones

About the Flood Control Zones

Within the Flood Control District several Flood Control Zones have been created in areas with specific flooding problems. These Zones do not cover the entire District and are, for the most part, concentrated in the eastern urbanized corridor of Marin County. The vast majority of the land area of the County is not covered by any Flood Control Zone. The Zones can perform many functions, including the construction, operation and maintenance of levees, pumping stations, culverts and drainage ways, and the cleaning and maintenance of creeks. All major actions by the Zones require authorization by the Board of Supervisors of the Flood Control District.

The District as a whole has no source of funds. However, all Zones, with the exception of Zone 10, receive annual revenues from property tax and in some cases special taxes or fees. The amount of property taxes received by the Zone is based on the pre-Proposition 13 tax allocation and varies widely depending on property tax base of the Zone and pre-proposition 13 tax rates. All revenues in the District are collected through the Zones and therefore must be spent in the Zone providing funding.

The boundaries of the Flood Control and Water Conservation District are contiguous with those of the County of Marin and eight "zones" have been established to address specific watershed flooding problems. Each zone has an "Advisory Board" of 5 or 7 residents, who are appointed by the Board of Supervisors. These Boards review Zone budgets and master plans and advise the Board on these matters.

Video recordings of the Flood District proceedings are now available online.

For more information about stormwater protection and technical resources, visit the MCSTOPPP website at: www.mcstoppp.org

Flood Control District Zones

Flood Zones od Marin County

Inverness Ross Valley Richardson Bay Bel Aire and Strawberry Circle San Rafael Meadows Stinson Beach Santa Venetia Novato County events including Flood Zone Advisory Board meetings are posted to the County Calendar. See upcoming events here.

Zone 1: Novato Area

Map of Novato

Maintenance: Bene Da Silva 
Phone: (415) 473-6538
E mail: BDaSilva@marincounty.org

Engineering projects: Roger Leventhal 
Phone: (415) 473-3249
Email: RLeventhal@marincounty.org

Zone Information

Zone 1 is a relatively large flood control zone that encompasses the entire city of Novato plus a sizeable amount of unincorporated area around the City. The Zone was formed in 1970 and includes essentially the entire watershed tributary to Novato and Rush Creeks. The Zone was formed to address flooding issues in downtown Novato and surrounding areas. Novato Creek is a substantial perennial stream that extends approximately 17 miles from San Pablo Bay to its headwaters at Stafford Lake. This creek, along with its numerous tributaries including Bowman Creek, Simmons Creek, Warner Creek and Arroyo Avichi, drains an approximately 27,500-acre watershed. Ongoing maintenance includes periodic dredging of lower Novato Creek, Warner Creek and Arroyo Avichi, regular servicing of pump stations, tidegates, levees, and drainages, and an annual vegetation maintenance program.

 

Zone 3: Mill Valley/Coyote Creek Area

Map of Mill Valley/Richardson Bay

Scott McMorrow - Zone Engineer
Telephone No. (415) 473-2918
E-mail: SMcmorrow@marincounty.org

Zone Information

Zone 3 includes a large portion of the Southern Marin draining to Richardson Bay including the City of Mill Valley, and numerous unincorporated communities including Alto, Sutton Manor, Almonte, Tamalpais Valley, Homestead Valley, and portions of Strawberry Point.  The County Board of Supervisors formed Flood Control Zone 3 in 1956 to address the area adjacent to Richardson Bay's vulnerability to flooding from creek and tidal action.  The Zone includes Richardson Bay and its many drainage areas tributary to the Bay including: Coyote Creek, Corte Madera del Presidio, and Warner Creek.  Maintenance activities include regular servicing of pump stations, tidegates, levees and drainage ditches, and an annual vegetation maintenance program.

 

Zone 4: Bel Aire Area (Tiburon)

Map of Bel Aire Area (Tiburon)

Scott McMorrow - Zone Engineer
Telephone No. (415) 473-2918
E-mail: SMcmorrow@marincounty.org

Zone Information

Flood Zone 4 is located on the Tiburon Peninsula encompassing portions of the City of Tiburon, including the community of Bel Aire. Flood Zone 4 was created in May of 1957 to alleviate chronic flooding in what was the Bel Aire subdivision and adjacent undeveloped lands.  The boundaries of the zone were later amended to include the residents of Strawberry Circle.  The Zone currently maintains existing facilities including pump stations and does an annual cleaning of drainage ways.

 

Zone 5: Stinson Beach

Map of Stinson Beach

Jon Liang - Zone Engineer
Telephone No. (415) 473-6215
Email: JLiang@marincounty.org

Zone Information

There are three sources of flooding in Stinson Beach: overflow of Easkoot Creek, extremely high tides, and extremely high surf.  Flood Control Zone No. 5 was created in 1961 to address the flooding in Stinson Beach.  Initially, the main focus of Zone was periodic maintenance dredging of Easkoot Creek.  Over time it has become evident that during medium to large storm events an active slide on Mt. Tamalpais releases enough hillside material to fill in the creek, even if it has recently been dredged.  New efforts in the Zone are now focusing on developing a long-term non-dredge flood reduction alternate while continuing routine maintenance activities such as removal of debris jams at brides and vegetation maintenance along the creek corridor.

 

Zone 6: San Rafael Meadows

Map of San Rafael Meadows

Jon Liang - Zone Engineer
Telephone No. (415) 473-6215
Email: JLiang@marincounty.org

Zone Information

Flood Zone 6 was established after construction of the San Rafael Meadows subdivision in the 1960s.  This is a very small zone located just west of Highway 101 across from the County Civic Center.  Houses were built in a low lying area and experienced frequent flooding until improvements were made.  In the early 2000s, during the construction of a new subdivision project a majority of the stormwater causing the flooding was rerouted around the community eliminating a significant cause of flooding in the zone.  In addition, the zone was annexed by City of San Rafael, who now owns and maintains all the Zone’s drainage easements.

 

Zone 7: Santa Venetia

Map os Santa Venetia

Jon Liang - Zone Engineer
Telephone No. (415) 473-6215
Email: JLiang@marincounty.org

Zone Information

Flood Control Zone 7 is comprised of the unincorporated community of Santa Venetia, east of 101 along San Pedro Road.  It was one of the first developments in Marin County to be constructed on fill over bay mud and occurred in an era before the County had the authority to regulate or control development.  Due to the low initial elevation of the fill and the compressible nature of the underlying bay mud, the area has subsided and is now below the high tide level.  To protect themselves from tidal flooding of Las Gallinas Creek, the residents of Santa Venetia formed Flood Control Zone 7 in 1962.  The annual maintenance program for facilities includes pump stations and levees, as well as other drainage facilities in the Zone.

More information on Zone 7

 

Zone 9: Ross Valley

Map of Ross Valley

Felix Meneau - Zone Engineer
Telephone No. (415) 473-3223
Email: FMeneau@marincounty.org

Zone Information

This is a very large Zone encompassing the watershed drained by Corte Madera Creek and includes the towns of Fairfax, San Anselmo, Ross and Larkspur as well as the unincorporated communities of San Anselmo, Fairfax, Kentfield, and Greenbrae.  Zone 9 was established in 1966 to act as a sponsoring agency for a major U.S. Army Corps of Engineers Flood Control project on Corte Madera Creek.  In January 2007, the flood zone boundaries were amended to include all territories within the incorporated areas of the towns of San Anselmo and Fairfax.  This change was undertaken in response to the flood of December 30, 2005 and the subsequent creation of the Ross Valley Flood Control and Watershed program.  The Zone maintains the Corte Madera Creek flood control channel from just downstream of the Ross Post Office to the outfall of the creek in Larkspur.  Typical activities include an annual vegetation and debris cleaning of the creeks and fire suppression mowing.

 

Zone 10: Inverness

Map of Inverness

Jon Liang - Zone Engineer
Telephone No. (415) 473-6215
Email: JLiang@marincounty.org

Zone Information

Located along the West shore of Tomales Bay and the East flank of the Inverness Ridge, Zone 10 was formed after the January 1982 storm.  After dealing with the aftermath of that storm the Zone has been relatively dormant but is being kept intact to be ready for the next large storm.  Some creek clearance is completed on an as-needed basis.