In many areas of Marin, culvert pipes are predominantly located within private property and are the private property owner’s responsibility to maintain. However, costs to properly repair deteriorating culverts may be prohibitive and therefore, simply not done, which can heighten risks of damage to public infrastructure. Please see the Drainage Assistance Program to find out … Continued
Visit the FEMA flood map service center to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk.
Visit our stormwater pollution prevention page to learn about stormwater best management practices for construction projects.
Drainage issues between private property owners are a civil matter; the County does not get involved with drainage disputes.
If the street is County-maintained, contact the Roads Department at (415) 499-7388 for east County; or (415) 662-2320 for west County, or by filling out our online form. If the street is non-County-maintained and isn’t under the jurisdiction of one of the incorporated cities/towns in Marin, the maintenance responsibility is the property owners who use … Continued
