Orange County Unincorporated, California · Overlay

FP-2

Floodplain Overlay District - Special Flood Hazard Area

Dimensional standards

Servicing

Geographic extent
Areas shown as 'A,' 'A1' through 'A30,' 'AO,' 'AE,' 'AH,' 'A99' and 'M' on the December 3, 2009 or most current federal FIRMs and FHBMs and to areas in which the County has determined to be a special flood hazard area.

Uses

Permitted by right6

Conditional / special use2

Accessory2

  • accessory storage structures (<120 sqft or <500 sqft wood frame garage)
  • walls and fences

Prohibited3

  • Structures and uses that would increase flood elevations during the occurrence of a base flood discharge
  • Landfills, excavations, and grading or the storage of materials and equipment that would result in any diversion or increase in erosion, flood elevations, or related hazards to people or property
  • Storage or disposal of floatable substances and materials or of chemicals, explosives, and toxic materials

Extracted standards

5 individual requirements pulled out of this section’s prose, each with the sentence it came from.

Floodplain

  • Lowest floor elevation above base flood1 ft

    the elevation of the lowest floor, including the basement or cellar, shall be at least one (1) foot above the base flood elevation.

  • Lowest floor elevation in Zone AO3 ft

    In FIRM Zone AO, new and substantially improved residential structures shall have their lowest floor (including basement) elevated above the highest adjacent grade and at least as high as the depth number on the FIRM plus one (1) foot, or not less than three (3) feet if a depth number is not specified.

  • Lowest floor elevation in Zone AO nonresidential3 ft

    In FIRM Zone AO, new and substantially improved nonresidential structures shall have their lowest floor (including basement) elevated above, or completely floodproofed above, the highest adjacent grade and to at least as high as the depth number on the FIRM plus one (1) foot, or not less than three (3) feet if a depth number is not specified.

  • Within Zones A1-30, AH, and AE on the County's FIRM, be elevated on a permanent foundation such that the lowest floor of the manufactured home is elevated to at least one (1) foot above the base flood elevation

  • Within Zone AO on the County's FIRM, be elevated on a permanent foundation such that the lowest floor of the manufactured home is elevated above the highest adjacent grade and at least as high as the depth number on the FIRM, plus one (1) foot, or not less than three (3) feet if a depth number is not specified

From the ordinance

The FP-2 applies to areas shown as 'A,' 'A1' through 'A30,' 'AO,' 'AE,' 'AH,' 'A99' and 'M' on the December 3, 2009 or most current federal FIRMs and FHBMs and to areas in which the County has determined to be a special flood hazard area.
Sec. 7-9-42.3, 7-9-42.5, 7-9-42.6, 7-9-42.7, 7-9-42.8