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Documents listed below are from 2018 onward. If you need a document from prior to 2018, please use the contact form to submit your request.

Documents listed below are from 2018 onward. If you need a document from prior to 2018, please use the contact form to submit your request.

About Zone 10 was formed in 1982 to address impacts of the large January storm on the west shore of Tomales Bay and the east flank of the Inverness Ridge. The Zone is largely dormant but can be revived for the next large storm. Watershed Zone 10 is located within the Tomales Bay and Lagunitas...

About Zone 7 was created in 1962 to address creek and tidal flooding within the low-lying unincorporated community of Santa Venetia. Zone 7 is the second-smallest flood control zone in the county. It occupies a small part of the lower Gallinas Creek Watershed and covers 0.42 square miles in unincorporated Santa Venetia. There are 890...

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...