Parts of Waller County Have Serious Flood Risk
The Brazos River runs along the county's western boundary. Clear Creek, Spring Creek, Walnut Creek, and Cedar Creek also drain through the county. FEMA has done a full Flood Insurance Study for Waller County. Some areas sit in the 100-year floodplain, meaning they have a 1-in-100 chance of flooding in any given year.
If your lender requires flood insurance, you likely live in a high-risk zone. Even outside those zones, flooding is possible — Harris County floods regularly and Waller County shares that coastal prairie terrain. Before buying, check the FEMA Flood Map Service Center online using your address. The county also has its own FEMA flood study document available through the Waller County website.
Content last revised 2026-07-11