Flood Control Zone 9 is comprised of all parcels of real estate within the Ross Valley watershed. It was created by the Board of Supervisors of the Marin County Flood Control & Water Conservation District to improve flood protection in the Corte Madera Creek watershed.
The 28-square mile watershed extends from Mt. Tamalpais and White’s Hill through these communities to San Francisco Bay:
The watershed includes 44 miles of stream channels.
Flood Control District 9 is a subarea of the District, which covers the entire county. Flood Control Zones were created in areas of the county that experience frequent flooding. Flood Control District 9 was the ninth zone to be created.
A fee is a charge imposed on an individual or business for a service or facility provided directly to an individual or business. The amount of a fee may not exceed the cost of government to
provide the service.
The storm drainage fee pays a portion of annual costs for flood protection programs.
The Health and Safety Code allows the County of Marin to charge a fee for acquiring, constructing, reconstructing, maintaining and operating storm drainage facilities. The fee was approved in 2007 by a majority of voters in a property-owner election.
The fee is calculated based on parcel size, use code, the amount of impervious surface on the
property, and the resulting amount of storm water runoff each property contributes to the
storm drainage system. The fee rates can be found in this report.