California Flood Map 2025 Free Download. The national flood hazard layer is a computer database that contains fema’s flood hazard map data. Each year during california flood preparedness week, communities and local, state, and federal agencies share information about flood risk and how to prepare.
The data depict flood hazard information and supporting data used to develop the information. The usgs california water science center maintains nearly 500 streamgages that provides key streamflow and water level data for flood forecasters, the public, and emergency managers at the federal, state, county, and local levels.
