Texas flood zone map and environmental check
Texas floods from hurricanes on the coast and from flash floods in the Hill Country, and many rural counties have old or unstudied FEMA maps where a zone A carries no base flood elevation. Texas's statutory seller's disclosure covers homes, so a commercial seller owes you far less. Old gas stations and dry cleaners are the usual contamination finds.
Check a Texas 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 Texas
FEMA’s Flood Map Service Center has the effective flood map for every Texas address. The state also runs:
Texas Water Development Board, with TDEM and the General Land Office
Statewide flood risk viewer from the first State Flood Plan, plus tools for local flood scenarios.
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 Texas
Texas Commission on Environmental Quality
Registered tanks and leaking tank cases, searchable by address or facility.
Texas Commission on Environmental Quality
The agency's file room: cleanup reports, violations and permits 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 Texas property
- TCEQ leaking petroleum storage tank cases
- TCEQ spill reports
- Texas dry cleaner remediation program sites
- TWDB water wells
- 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)