Zone |
Zone Name |
Description |
100 |
Area in SFHA |
This is an area inundated by 100-year flooding for which BFEs or velocity may have been determined. No distinctions are made between the different flood hazard zones that may be included within the SFHA. |
100IC |
100-year Flood Discharge Contained in Channel |
An area where the 100-year 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. |
A |
Zone A |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A99 |
Zone A99 |
An area inundated by 100-year flooding, for which no BFEs have been determined. This is an area to be protected from the 100-year flood by a Federal flood protection system under construction. |
AE |
Zone AE |
An area inundated by 100-year flooding, for which BFEs have been determined. |
AH |
Zone AH |
An area inundated by 100-year flooding (usually an area of ponding), for which BFEs have been determined; flood depths range from 1 to 3 feet. |
ANI |
Area Not Included |
An area that is located within a community or county that is not mapped on any published FIRM. |
AO |
Zone O |
An area inundated by 100-year flooding (usually sheet flow on sloping terrain), for which average depths have been determined; flood depths range from 1 to 3 feet. |
AR |
Zone AR |
An area inundated by flooding, for which BFEs or average depths have been determined. |
B |
Zone B |
An area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile; or an area protected by levees from 100-year flooding. |
BE |
Zone BE |
An area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile; or an area protected by levees from 100-year flooding. |
BX |
Zone BX |
An area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile; or an area protected by levees from 100-year flooding. |
C |
Zone C |
An area that is determined to be outside the 100- and 500-year floodplains. |
CE |
Zone CE |
An area that is determined to be outside the 100- and 500-year floodplains. |
CX |
Zone CX |
An area that is determined to be outside the 100- and 500-year floodplains. |
D |
Zone D |
An area of undetermined but possible flood hazards. |
FW |
Floodway |
An area that includes the channel of a river or other watercourse (Usually adjacent to Zone AE). |
FWIC |
Floodway Contained in Channel |
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 |
IN |
Area In SFHA |
This is an area inundated by 100-year flooding for which BFEs or velocity may have been determined. No distinctions are made between the different flood hazard zones that may be included within the SFHA. |
NM |
Area Not Mapped |
An area that is located within a community or county that is not mapped on any published FIRM. |
OUT |
Area Not Mapped |
An area designated as outside a "Special Flood Hazard Area" (or SFHA) on a FIRM. This is an area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile |
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. |
V |
Zone V |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
VE |
Zone VE |
An area inundated by 100-year flooding with velocity hazard (wave action); BFEs have been determined. |
X |
Zone X |
An area that is determined to be outside the 100- and 500-year floodplains. |
X5 |
Zone X (500-year) |
An area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile; or an area protected by levees from 100-year flooding. |
X500 |
Zone X (500-year) |
An area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile; or an area protected by levees from 100-year flooding. |
X500IC |
500-year Flood Discharge Contained in Channel |
An area where the 500-year 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. |
A1 |
Zone A1 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A2 |
Zone A2 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A3 |
Zone A3 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A4 |
Zone A4 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A5 |
Zone A5 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A6 |
Zone A6 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A7 |
Zone A7 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A8 |
Zone A8 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A9 |
Zone A9 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A10 |
Zone A10 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A11 |
Zone A11 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A12 |
Zone A12 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A13 |
Zone A13 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A14 |
Zone A14 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A15 |
Zone A15 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A16 |
Zone A16 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A17 |
Zone A17 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A18 |
Zone A18 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A19 |
Zone A19 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A20 |
Zone A20 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A21 |
Zone A21 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A22 |
Zone A22 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A23 |
Zone A23 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A24 |
Zone A24 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A25 |
Zone A25 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A26 |
Zone A26 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A27 |
Zone A27 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A28 |
Zone A28 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A29 |
Zone A29 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
A30 |
Zone A30 |
An area inundated by 100 year flooding, for which no BFEs have been established. |
V0 |
Zone V0 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V1 |
Zone V1 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V2 |
Zone V2 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V3 |
Zone V3 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V4 |
Zone V4 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V5 |
Zone V5 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V6 |
Zone V6 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V7 |
Zone V7 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V8 |
Zone V8 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V9 |
Zone V9 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V10 |
Zone V10 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V11 |
Zone V11 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V12 |
Zone V12 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V13 |
Zone V13 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V14 |
Zone V14 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V15 |
Zone V15 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V16 |
Zone V16 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V17 |
Zone V17 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V18 |
Zone V18 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V19 |
Zone V19 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V20 |
Zone V20 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V21 |
Zone V21 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V22 |
Zone V22 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V23 |
Zone V23 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V24 |
Zone V24 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V25 |
Zone V25 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V26 |
Zone V26 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V27 |
Zone V27 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V28 |
Zone V28 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V29 |
Zone V29 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
V30 |
Zone V30 |
An area inundated by 100-year flooding with velocity hazard (wave action); no BFEs have been determined. |
Z |
Area of Unknown Flood Hazard |
An area of Data Discrepancy or an Unclaimed Area. Internal TFHC designation. |
N |
Area Not Mapped |
An area that is located within a community or county that is not mapped on any published FIRM (Usually a community not participating in NFIP). Internal TFHC designation. |
AR/A |
Zone AR/A |
An area inundated by flooding, for which BFEs or average depths have not been determined. |
AR/AE |
Zone AR/AE |
An area inundated by flooding, for which BFEs or average depths have been determined. |
AR/AE |
Zone AR/AH |
An area inundated by flooding, for which BFEs or average depths have been determined. |
