Flood Zone Map

 
 
Flood Zone Map Explanations  
 
Zone A - Special Flood Hazard Area, within 100 yr floodplain, BFE not determined by FEMA.
 
Zone AE - Special Flood Hazard Area, within 100 yr floodplain, Detailed study by FEMA, BFE determined by FEMA
 
Zone AH - Special Flood Hazard Area, within 100 yr floodplain, Areas of ponding, BFE determined by FEMA.
 
Zone X500 - Areas not in a Special Flood Hazard Area, within The 500 yr floodplain.
 
Zone X - Areas not in a Special Flood Hazard Area, outside The 500 yr floodplain.
 
  • Flood insurance is mandatory for structures in Special Flood Hazard Areas
  • Floodway – In the floodway, communities must prohibit encroachments, including fill, new construction, substantial improvements, and other development within the adopted floodway unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed encroachment would not result in ANY increase in flood levels within the community during the occurrence of the base flood discharge.
  • BFE – Base Flood Elevation, the computed elevation to which floodwater is anticipated to rise during the base flood is the 100-year flood elevation
  • 100-year flood(Base Flood) – is the flood that has a 1% chance of occurring or being exceeded in any given year

Current and Preliminary Flood Zone Map

Effective July 1, 2009:

As per Ordinance O-110-2009; all structures located in a special flood hazard area within the jurisdiction of the City of Lafayette and the unincorporated areas of Lafayette Parish are now required to build according to the following:

Residential Construction: New Construction or substantial improvement of any residential building (or manufactured home) shall; have the lowest floor, including basement mechanical and utility equipment, and ductwork, elevated no lower than 1 foot above Base Flood Elevation.

Non-Residential Construction: New Construction or substantial improvement of any commercial, industrial, or non-residential building (or manufactured home) shall:

  • Have the lowest floor, including basement, mechanical and utility equipment, and ductwork elevated no lower than 1 foot above the Base Flood Elevation; or
  • Be floodproofed to a level no lower than 1 foot above the level of the Base Flood Elevation, provided that all areas of the building (including mechanical and utility equipment) below the required elevation are watertight with walls substantially impermeable to the passage of water and use structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effects