Flood Damage Prevention Checklist

General Flood Zone Designation

  1. Know your FIRM Panel Number.
  2. Know your FIRM Panel date.
  3. Are you in a Flood way? 
  4. Base Flood Elevation               NAVD 88 and your Flood Zone.
  5. How was your BFE Determined? FIRM , FIS, or Other? 
  6. Required freeboard             feet in PCC, LTA, or ASCE. 
  7. Required Finished Floor Elevation( Lot Grading)                 feet, NAVD 88.
  8. Do you have  your FEMA letter of map change? please attach to application is applicable. 
  9. Flood resistant materials shall be used below BFE and required freeboard according to the FEMA Technical Bulletin 2-08. 

Please see specific requirement for your zone below: 

A ZONE

  1. Finished Floor Elevation for all new and substantial improvements in the Special Flood Hazard Area is to the BFE + required freeboard, unless shown higher from an approved lot-grading plan or finished floor elevation shall be at least sixteen (16)inches above the highest crown line of the street lying between the projection of the side building lines.
  2. Provide top of bottom floor elevation. (A-zone)
  3. For attached garage provide top of slab elevation. (A and V-zone)
  4. Total area of all permanent openings (flood hydrostatic ventilation vents) identified and within one (1) foot above adjacent grade are shown, and minimum of two openings on separate walls shown unless otherwise designed by design professional. If engineered flood openings are used, documentation must be provided. (FEMA Technical Bulletin 1-08)
  5. Lowest elevation of machinery and/or equipment servicing the building be identified (e.g. Pad) at the required flood elevation – includes ductwork. GFI must be used for structure servicing equipment below the BFE. (A and V-zone)

Accessory Structures for A Zone

  1. Structure is for storage and not for any type of habitation and is not climate controlled.
  2. Flood resistant materials used. (FEMA Technical Bulletin No. 2-08)
  3. Anchored to resist flotation and lateral movement.
  4. Permanent openings (flood vents) as designed.
  5. Accessory structure is of low value.
  6. Service Facility (electric shall be elevated above DFE or floodproofed). 

NON-RESIDENTIAL FLOOD PROOFED STRUCTURES for A Zones only

  1. Commercial structures with a finished floor below the BFE are to be engineered to be floodproofed one (1) foot or greater above the BFE or elevated to required flood elevation.
  2. Floodproof certificate is required before permit is finalized.
  3. Use of flood protection and floodshields must be identified on plans.
  4. Floodproofing operation procedures are required.

V ZONE

  1. Geologic Hazards report and V Zone Design Certificate submitted with plans.
  2. Bottom of lowest horizontal structural member (including ductwork) elevation is at the BFE + required freeboard.
  3. The plans must show details of the breakaway wall construction and comply with the FBC residential flood resistant construction or FBC-building flood loads (ASCE 24-14)
  4. All utilities, electric, water heater, furnace, air conditioning unit, etc., must be elevated to the BFE + required freeboard.
  5. For attached garage provide top of slab elevation. (A and V-Zone)
  6. No fill, except for minor landscaping. If fill is used (including for an elevated septic system), a wave-impact analysis must be submitted and shown that there is no impact to adjacent properties. (FEMA Technical Bulletin 5-08)
  7. The only permitted use below the BFE is limited building access, a garage for parking vehicles or a storage area.

Accessory Structures for V Zone

  1. Structure is for storage and not for any type of habitation and is not climate controlled.
  2. Flood resistant materials used. (FEMA Technical Bulletin No. 2-08)
  3. Anchored to resist flotation and lateral movement.
  4. Permanent openings (flood vents) as designed.
  5. Accessory structure is of low value.
  6. Service Facility (electric shall be elevated above DFE or floodproofed). 
  7. The structural system shall utilize pilings, adequately embedded to resist scour and lateral deflection.
  8. Any enclosure below the BFE shall be constructed of wooden lattice, or insect screening, or shall be designed as a “breakaway wall” in conformance with section 60.3(e) (5) of 44CFR. Chapter 4 (ASCE 24-14)

  9. Floors shall be at grade.

  10. Accessory storage structures shall meet the requirements of Chapter 4 (ASCE 24-14).

Floodway Encroachment 

  1. No-Rise/Impact Certification and supporting data must be provided for any development. Must show zero rise in the floodway.
  2. No fill shall be used within the Floodway unless a No-Rise Certification is provided showing No-Rise in elevation of the Floodway.
  3. Placement of manufactured homes is not permitted, unless in existing manufactured home park or subdivision or area zoned only for manufactured homes and No-Rise Certification is submitted.
  4. Free of Obstructions below BFE . (FEMA Technical Bulletin No. 5-08)

REMODELS

  1. SUBSTANTIAL IMPROVEMENT. Any one or more or combination thereof of repair, reconstruction, rehabilitation, addition or improvement of a building or structure, the cost of which equals or exceeds, over a 1 year period, a cumulative total of 50 percent of the market value of the structure before the improvement or repair is started. If the structure has sustained substantial damage, any repairs are considered substantial improvement regardless of the actual repair work performed. (A and V-Zone)

    2. Substantial Improvement Package completed .

    3. Remodel of uninhabited space to habitable space below the BFE is prohibited. The remodeling project will be required to have the finished floor elevated to the BFE + freeboard (A-zone) or lowest horizontal member elevated to the BFE + required freeboard (V-zone).

    4. No remodel or conversion of space below the BFE is allowed.

    5. No new additions (vertical or lateral) without being elevated on an elevated foundation designed to specifications shown in the Geologic Hazards report.