R322.2.1 Elevation requirements.
1. Buildings and structures in flood hazard areas, including flood areas designated as Coastal A Zones, shall have the lowest floors elevated to or above the base flood elevation plus what is required in the Flood Hazard regulations of the Boise Development Code.
2. In areas of shallow flooding (AO Zones), buildings and structures shall have the lowest floor (including basement) elevated to a height above the highest adjacent grade of not less than the depth number specified in feet on the FIRM plus what is required in the Flood Hazard regulations of the Boise Development Code.
3. Basement floors that are below grade on all sides shall be elevated to or above base flood elevation plus what is required in the Flood Hazard regulations of the Boise Development Code.
Exception: Enclosed areas below the design flood elevation, including basements with floors that are not below grade on all sides, shall meet the requirements of Section R322.2.2 and as required in the Flood Hazard regulations of the Boise Development Code.
(Ord. 40-20, 12-1-2020, eff. 1-1-2021)