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About The Ross Valley Flood Protection and Watershed Program was established after the flooding that occurred in Ross Valley during December 2005. The floods caused nearly $95 million in damages in the communities of Fairfax, San Anselmo, Ross, Kentfield and Larkspur. The program is a regional effort led by the Marin County Flood Control and...

About Zone 3 was formed in 1956 to address creek and tidal flooding adjacent to Richardson Bay. Zone 3 covers over 13 square miles. It includes the City of Mill Valley and several unincorporated communities: Marin City Alto Sutton Manor Almonte Tamalpais Valley Homestead Valley Portions of Strawberry Point There are 12,560 parcels in the...

About Zone 1 was formed in 1955 to address flooding issues in downtown Novato and surrounding areas. Zone 1 is the largest zone by area in Marin. It covers over 45 square miles. It includes the City of Novato and portions of unincorporated County in: Indian Valley Bel Marin Keys Green Point Black Point Loma...

About Zone 6 was created in the 1960’s to address frequent flooding in the low-lying neighborhood just west of Highway 101 across from the County Civic Center. The Zone occupies a very small part of the Gallinas Creek Watershed. It is also the County's smallest flood control zone. It covers only 0.16 square mile entirely...

About The watershed includes 44 miles of stream channels. Ross Creek drains the northern slope of Mt. Tamalpais. San Anselmo Creek and its tributaries drain the northwestern portion of the watershed. The two channels join to form Corte Madera Creek in Ross. Corte Madera Creek flows through more than a mile of concrete-lined channel past...

About Tomales Bay and its watershed are a resource-rich part of Marin County. Tomales Bay is included in the Gulf of the Faralones National Marine Sanctuary. It is also part of the Central California Coastal Biosphere Reserve and the Western Hemisphere Shorebird Reserve Network. The Audubon Society recognizes it as an important bird area. In...

Habitat Miller Creek watershed is unique in that it has relatively intact riparian vegetation along the creek. The watershed has 30 miles of channels. The Miller Creek watershed supports a variety of habitat types: Open ridge lands and grazing lands in the upper watershed with annual grasslands interspersed with oak-bay woodland and oak savanna with...

About Northeastern Novato stormwater flows into two places. The first is Rush Creek, which then flows into Black John Slough and to the Petaluma River. The second place is the Deer Island Basin and Simmons Slough. Simmons Slough goes to Novato Creek by pump. A series of levees and floodgates manage both wildlife habitat and...

About The main drainage in the watershed is Novato Creek. Novato Creek is joined by six major tributaries along its 17 mile length: Leveroni Creek Bowman Canyon Warner Creek Arroyo Avichi Arroyo de San Jose Simmons Slough Habitat The Novato Creek watershed supports diverse habitats from steep headwaters to salt marshes along the bay. The...

Habitat The land draining into Stemple Creek is largely grassland with rolling hills for agriculture.  Willows have been re-established along parts of the main creek and tributary streams. Coastal oak woodland can still be found along some of the higher tributaries. Eucalyptus, once planted in rows for windbreaks and fuel, are now one of the...

About Mount Tamalpais, the highest point in Marin County, rises steeply above Richardson Bay. The ridges of Mount Tamalpais, shape the upper reaches of the watershed. They are protected as public open space and support a rich diversity of plant and wildlife communities. The watershed drains to Richardson Bay, a shallow and biologically-rich wildlife preserve....

Habitat Point Reyes has been recognized as an “Important Bird Area” by the National Audubon Society. The extensive saltmarsh and mudflats of Drake’s Estero provide habitat for many migrating and wintering waterbirds. Species that live here Over 45% of North American bird species 20% of the State’s flowering plants 37 native land mammals A dozen...

About North Fork The North Fork is the larger of the two drainages. It flows from the western ridgeline through the Santa Margarita Valley and the community of Terra Linda to its confluence with South Gallinas Slough near McInnis Park. South Gallinas Slough South Gallinas Slough is fed by several small tributaries that originate in...

Habitat The Estero Americano contains 301 acres of open water and 412 acres of wetland habitat. This includes: Mudflats Seasonal brackish marsh Freshwater marsh The California Department of Fish and Game identified Estero Americano and its southern neighbor, Estero de San Antonio, as among the most significant habitat areas in the State. Streamside habitat along...

About Zone 5 was created in 1961 to address creek and tidal flooding in Stinson Beach. It is small, covering 2.28 square miles of entirely unincorporated lands in the community of Stinson Beach. There are 921 parcels in the Zone. The boundaries of the Zone and the Easkoot Creek Watershed closely align. The following tributaries...