Louisiana flood zone map and environmental check
In Louisiana a lot of developed land sits in FEMA's special flood hazard area, and the 2016 Baton Rouge flood hit many buildings outside it. Levees change the picture: a site behind a levee can map as moderate risk and still flood if it fails, so we note levees near the site.
Check a Louisiana property’s flood zone free
Type the address. See the FEMA flood zone and map, free. Add your email to see which buildings sit in the flood area.
Official flood maps for Louisiana
FEMA’s Flood Map Service Center has the effective flood map for every Louisiana address. The state also runs:
LSU AgCenter
Address lookup for the effective and preliminary FEMA zone and base flood elevation.
Map tools usually show the zone at the address pin. On a commercial lot, the buildings can sit in a different zone than the pin. Our free check shows which buildings are in the 1% and 0.2% annual-chance flood areas.
Contamination and tank records in Louisiana
Louisiana Department of Environmental Quality
LDEQ's public file room: tank, waste and cleanup records by site.
A listed site next door matters as much as one on your lot: leaks travel with groundwater. Look at what’s around the property, not only the address.
What our report checks for a Louisiana property
- FEMA's National Flood Hazard Layer: the flood zone under each building, not just the pin
- FEMA flood insurance claims history for the area (OpenFEMA)
- USACE National Levee Database
- EPA lists: Superfund (NPL and delisted), SEMS, RCRA corrective action and hazardous waste handlers, brownfields (ACRES), PFAS layers
- EPA UST Finder for underground storage tanks and leaks
- EPA ECHO air permits that flag dry cleaners
- Aerial photos back through the decades (USGS, NAIP, Esri Wayback) and Sanborn fire insurance maps where the Library of Congress has them
Every source is marked checked, not found or not checked. A source we couldn’t reach is listed as a gap, never as a clean result. It is a desk screen, not a Phase I.
Questions buyers ask
Other states
Sources (checked 2026-11-10)