Patricia Skinner | 4/22/2018 1:32:06 PM
The Base Flood – on the map
View FEMA’s Flood Insurance Rate Maps (FIRMs) over road maps and aerial photos; get zone, Base Flood Elevation, and contact information for local floodplain officials.
The Base Flood – on the ground
Learn how you know what’s In or Out, what it means for construction and financing, how to get the map amended and how to get the best rate on flood insurance.
Please report any issues to FloodMaps@agcenter.lsu.edu.
The legend on this state index distinguishes parishes by one of two criteria:
Flood maps on this site are displayed over Bing maps. The LSU AgCenter FloodMaps system is unique in that it integrates flood risk information with ground elevation data (provided by a service of the US Geological Survey) and basic wind speed (derived from the 2003 International Residential Code (IRC) and produced as a service by the LSU AgCenter). Basic Wind Speed Interactive Map.
Effective February 1, 2018, Louisiana adopted the 2015 IRC (with amendments), replacing the 2012 IRC Basic Wind Speed map with the 2015 IRC Ultimate Design Wind Speed (UDWS) map as the wind-speed design criteria for one-to-four family dwellings. The threshold at which site-specific wind design is required is UDWS = 130 mph.
Previously, as of January 1, 2013, Louisiana had adopted the 2012 IRC and replaced the 2003 IRC Basic Wind Speed map with the 2012 IRC Basic Wind Speed map. Even though the 2006 IRC lowered the threshold to 100 mph for leaving the basic code and requiring site-specific wind engineering (or use of accepted high-wind engineering guides), Louisiana still retained 110 mph as that threshold.