Flood Zone Codes

As Stated by FEMA;

 

"Flood hazard areas identified on the Flood Insurance Rate Map are identified as a Special Flood Hazard Area (SFHA). SFHA are defined as the area that will be inundated by the flood event having a 1-percent chance of being equaled or exceeded in any given year.

 

The 1-percent annual chance flood is also referred to as the base flood or 100-year flood. SFHAs are labeled as Zone A, Zone AO, Zone AH, Zones A1-A30, Zone AE, Zone A99, Zone AR, Zone AR/AE, Zone AR/AO, Zone AR/A1-A30, Zone AR/A, Zone V, Zone VE, and Zones V1-V30.

 

Moderate flood hazard areas, labeled Zone B or Zone X (shaded) are also shown on the FIRM, and are the areas between the limits of the base flood and the 0.2-percent-annual-chance (or 500-year) flood. The areas of minimal flood hazard, which are the areas outside the SFHA and higher than the elevation of the 0.2-percent-annual-chance flood, are labeled Zone C or Zone X (unshaded)."

Codes 

Zone C, Zone X -      Areas determined to be outside 500-year floodplain determined to be outside the 
                         1% and 0.2% annual chance floodplains.

 

Zone B, Zone X500 -  Areas of 500-year flood; areas of 100-year flood  with average depths of less than 1 
                         foot or with drainage areas less than 1 square mile; and areas protected by levees 
                         from 100-year flood.  An area inundated by 0.2% annual chance flooding.

 

Zone A -          An area inundated by 1% annual chance flooding, for which no BFEs have been 
                         determined.

 

Zone AE -        An area inundated by 1% annual chance flooding, for which BFEs have been 
                         determined.

 

Zone AH -        An area inundated by 1% annual chance flooding (usually an area of ponding), 
                          for which BFEs have been determined; flood depths range from 1 to 3 feet.

 

Zone AO -        An area inundated by 1% annual chance flooding (usually sheet flow on sloping 
                           terrain), for which average depths have been determined; flood depths range from 
                           1 to 3 feet.

 

Zone AR -         .An area inundated by flooding, for which BFEs or average depths have been 
                           determined.  This is an area that was previously, and will again, be protected from 
                           the 1% annual chance flood by a Federal flood protection system whose 
                           restoration is Federally funded and underway

 

Zone A1-A30 -   An area inundated by 1% annual chance flooding, for which BFEs have been 
                         determined. .

 

Area Not 
Included 
  (ANI),(N)      -    An area that is located within a community or county that is not mapped on any 
                          published FIRM.

 

Zone D -           An area of undetermined but possible flood hazards.

 

Undescribed 
(UNDES)   -       Area of Undesignated Flood Hazard.  A body of open water, such as a pond,lake, 
                          ocean, etc., located within a community's jurisdictional limits, that has no defined 
                          flood hazard.

 

Zone VE -        An area inundated by 1% annual chance flooding with velocity hazard 
                          (wave action); BFEs have been determined.

 

Zone V(1-30) -    Costal flood with velocity hazard 
                            (wave action); BFEs have not been determined.

 

FWIC -           An area where the floodway is contained within the channel banks and the channel 
                         is too narrow to show to scale.  An arbitrary channel width of  3 meters is shown. 
                        BFEs are not shown in this area, although they may be reflected on the 
                        corresponding profile. (Floodway Contained in Channel)

 

100IC -          An area where the 1% annual chance flooding is contained within the channel 
                        banks and the channel is too narrow to show to scale.  An arbitrary channel width 
                        of  3 meters is shown. BFEs are not shown in this area, although they may be 
                        reflected on the corresponding profile.  (1% Annual Chance Flood Discharge 
                        Contained in Channel)

500IC -           An area where the 0.2% annual chance flooding is contained within the channel 
                         banks and the channel is too narrow to show to scale.  An arbitrary channel width 
                         of  3 meters is shown. ( 2% Annual Chance Flood Discharge Contained in channel)

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James T. Morrison R(S)

Koa Realty, Inc.

76-5905 Mamalahoa Hwy.
Holualoa, HI 96725

Cell: (808) 209-9906

Office: (808) 334-1562

Fax: (808) 334-1567

jtm@jamesmorrisonhawaii.com

© 2017 by James T. Morrison & Koa Realty, Inc. Created by James T. Morrison