The Federal Emergency Management Agency has issued revised coastal flood-risk maps that may require more homeowners living on Marin shores to purchase flood insurance. The new maps—which providers use to set flood insurance premiums—determine the boundaries of special flood hazard areas, within which any house backed by a mortgage must carry flood insurance.
According to the Marin County Department of Public Works, 53 more parcels in West Marin will fall within the expanded flood-hazard boundaries…