Special Flood Hazard Areas (SFHA)

The land area covered by the floodwaters of the base flood is the Special Flood Hazard Area (SFHA) on NFIP maps. The SFHA is the area where the NFIP's floodplain management regulations must be enforced and the area where the mandatory purchase of flood insurance applies.

The SFHA includes Zones A, AO, AH, A1-30, AE, A99, AR, AR/A1-30, AR/AE, AR/AO, AR/AH, AR/A, VO, V1-30, VE, and V.

For more information please check FEMA website. 

Following is Flood Zones In Oceanside where mandatory flood insurance purchase requirements and floodplain management standards apply :

Zone A

• Areas of special flood hazard subject to inundation by the 1-percent-annual-chance flood event without (Base Flood Elevation ) water surface elevation determined
• Requirements

Zone AE

• Areas subject to inundation by the 1-percent-annual-chance flood event determined by detailed methods. Base Flood Elevations (BFEs) are shown.
• Requirements

Zone AO

• Areas subject to inundation by 1-percent-annual-chance shallow flooding (usually sheet flow on sloping terrain) where average depths are between one and three feet. Average flood depths derived from detailed hydraulic analyses are shown in this zone.
• Some Zone AO have been designated in areas with high flood velocities such as alluvial fans and washes. Communities are encouraged to adopt more restrictive requirements for these areas.
• Requirements