Denton County has active FEMA flood maps that affect insurance and building

FEMA updates Flood Insurance Rate Maps (FIRMs) to show which land is in a Special Flood Hazard Area — the zone where a flood has at least a 1-in-100 chance each year. Properties in these zones usually must carry flood insurance if they have a federally backed mortgage.

In June 2026, FEMA released new preliminary maps covering parts of Denton, Fort Worth, Haslet, Justin, New Fairview, Roanoke, and other communities. Residents had a period to appeal or comment. Look up any address at the FEMA Map Service Center (msc.fema.gov) to see its flood zone. Your local floodplain administrator can also help.