FEMA maintains consistent national standards for its flood hazard mapping program. However, each community has its own unique flood control characteristics that should be included in the mapping program for an accurate assessment of flood risk.
The District joined FEMA’s Cooperating Technical Partners (CTP) Program in 2009. As a partner, the District follows FEMA regulations and guidelines to identify local flood risks and supports FEMA with accurate data that is used as the basis for FEMA Flood Insurance Rate Maps (FIRMs).
The District works to keep local flood maps accurate and up to date through hydrologic and hydraulic modeling and analysis of the streams and channels that are unique to Alameda County.
As a partner, the District also receives some federal funding every year to supplement mapping activities.
Because the District participates in the CTP Program, better flood insurance rates are available to property owners in Alameda County under the FEMA Community Rating System.