The Federal Emergency Management Agency (FEMA) produces and continuously updates flood hazard data in support of the National Flood Insurance Program (NFIP). In July of 2015 FEMA issued an updated Flood Insurance Study (FIS) for Sutter County (Unincorporated Areas) and also issued new FIRMs for the Natomas Basin designating most of the basin as A99. After Natomas Basin levee improvements are completed and the levees are recertified FEMA will remap the Natomas Basin and the A99 areas will be changed to X Zones. Because of current design and construction progress on Sutter County levee systems the County does not anticipate any more FEMA remapping efforts within the next five years. The most current FIS along with the related FIRMs can be found below.

• Flood Insurance Study (FEMA Product ID: 060394V000B)
• DWR Best Available Maps (BAM)