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Documents listed below are from 2018 onward. If you need a document from prior to 2018, please use NextRequest 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 4 was created in 1957 to alleviate chronic flooding in Bel Aire and adjacent undeveloped lands. The boundaries of the zone were later amended to include Strawberry Circle. Zone 4 is small, covering only 0.85 square miles and includes parts of the Town of Tiburon and Bel Aire and Strawberry Circle. There are...

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 Flood Zone 9 serving the Ross Valley was formed in 1965. It consists of most of the 28 square mile Ross Valley watershed, stretching from White’s Hill to San Francisco Bay. Map of Zone 9 Flood Zone 9’s services and activities include: Operating and maintaining flood control infrastructure Administering the Zone 9 Advisory Board...

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...