One in five Texans lives in a floodplain, state’s first-ever analysis shows

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As it prepares a statewide flood prevention plan, the state found that almost 6 million Texans live in an area susceptible to floodwaters.

At the same time, higher global temperatures are melting glaciers, increasing sea levels around the world — including in Texas — and making coastlines more vulnerable to storm surges. Between 2000 and 2019, rising sea levels caused the Texas coastline to retreat about 4 feet per year on average, according to a 2021 University of Texas Bureau of Economic Geology report for the Texas General Land Office.

Though floodplains are defined by the Federal Emergency Management Agency, the agency does not map every inch of the U.S. and its maps have long been criticized as out of date and underestimating actual flood risk. In the Canadian-Upper Red region, for example, which includes much of the Panhandle and Wichita Falls, hardly any flood maps existed, while 98% of the Lower Red-Sulphur-Cypress region in the northeast corner of the state had inadequate flood mapping, James Bronikowski, TWDB’s manager for regional flood planning told the board on Tuesday.

 

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One in five Texans lives in a floodplain, state’s first-ever analysis showsAs it prepares a statewide flood prevention plan, the state found that almost 6 million Texans live in an area susceptible to floodwaters.
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