Texas Flood Risk: From Houston to the Coast

Texas: A State Shaped by Floods

Texas ranks second only to Florida in flood insurance claims and has experienced some of the most catastrophic flood events in American history. The state's vast size means flood risk varies enormously, from Gulf Coast storm surge to Hill Country flash floods to North Texas river flooding.

Harris County, home to Houston, has more flood insurance policies than any county outside of Florida. The region's flat terrain, clay soils, and rapid development create conditions where even moderate rainfall can cause widespread flooding.

Houston and the Gulf Coast

Houston's flood history is devastating. Hurricane Harvey in 2017 dropped over 60 inches of rain in some areas, causing an estimated $125 billion in damage. But Harvey was not unique. The city experiences major flooding events every few years due to its combination of tropical moisture, flat geography, and extensive impervious surfaces.

Coastal communities from Galveston to Corpus Christi and Brownsville face compound risks from hurricane storm surge, heavy rainfall, and rising sea levels. Many of these areas sit just a few feet above sea level.

Inland Flooding

The Texas Hill Country, including areas around Austin and San Antonio, is known as Flash Flood Alley. Thin soil over limestone bedrock cannot absorb heavy rain, sending walls of water through canyons and creek beds with little warning. North Texas cities like Dallas and Fort Worth face river flooding from the Trinity River system and its tributaries.

Protecting Yourself in Texas

Regardless of where you live in Texas, flooding is a real possibility. Check your specific ZIP code to see detailed flood zone information. Texas also has state-level flood mitigation programs and assistance through the Texas Water Development Board that can help with property improvements and planning.