Building in a Floodplain

​All construction or fill within a floodplain requires a floodplain management permit. If you plan to build or grade within a federal or local floodplain, contact Water Resources staff at (916) 874-6851. Non-permitted floodplain construction or fill should be reported to (916) 875-RAIN.

All proposed new structures or substantial improvement of existing structures in a flood hazard area must be constructed at least 18 inches above the flood hazard elevation.

All new structures shall be protected from the Base Flood.​

Contact Information

​For questions or additional concerns about building in a floodplain, please call (916) 874-9138.

Our Front Counter service is also available at:

Building Assistance Center
827 7th Street, Room 102
Sacramento, CA 95814
Email: wrfloodinfo@sacco​

Note: Building Assistance Center customers can park free​ for up to 1 hour at the County Administration Center parking garage at the corner of G Street and 7th Street. Park on the second story of the garage and walk across the overpass bridge to the County building (700 H Street). Ask the security officer for directions to the Building Assistance Center.​