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

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

One in five Texans lives in a floodplain, state's first-ever analysis shows” was first published by The Texas Tribune, a nonprofit, nonpartisan media organization that informs Texans — and engages with them — about public policy, politics, government and statewide issues.

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Almost 6 million Texans, or about 20% of the population, live in an area susceptible to flooding and one-fifth of the state's land is in a 100-year floodplain, according to first-of-its-kind data gathered as part of a statewide effort to harden Texas against floods and rising sea levels.

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The analysis is part of the Texas Water Development Board's first statewide flood plan, still in development, which the Legislature required in a 2019 law passed in response to Hurricane Harvey. Flood risks in Texas are increasing as climate change brings heavier precipitation, stronger hurricanes and sea level rise and as the state's population continues to climb.

More than 2.4 million Texans live in areas that have a 1% chance of flooding each year, known as the 100-year floodplain, the analysis found. Another 3.5 million people live in areas with a 0.2% chance of flooding each year, known as the 500-year floodplain.

Roughly 56,000 square miles of Texas now fall within the 100-year floodplain, TWDB staff said in a presentation this week.

It will likely cost Texas tens of billions of dollars to protect people and property from floods. The first projects proposed in the plan add up to $38 billion, including the massive coastal barrier proposal with its “Ike Dike,” a huge gate system proposed for the mouth of Bay.

“Getting this program up and running is a really big deal,” TWDB Chair Brooke Paup said before the board approved the 15 regional plans, a major step in creating the statewide flood plan. Each region is built around one of the state's major watersheds.

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“I know it'll truly go so far to save lives and people's homes,” Paup said.

As climate change worsens, higher global temperatures increase the amount of moisture in the air and thus the risk of extreme rainfall events, the Texas state climatologist and a national climate assessment have found. Heavier precipitation linked to climate change likely increased Hurricane Harvey's total rainfall by as much as 19%, one study found. Almost 50 inches of rain fell in some areas of Houston during Harvey — the highest rainfall amount in a single storm for any place in the continental U.S.

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.

Reem Zoun, director of flood planning at the TWDB, said that to decide how to prevent flooding in Texas, the agency first needed to identify which areas of the state were at the most risk. The analysis identified how many buildings, homes, people, hospitals, roads and agricultural areas are in a floodplain.

The San Jacinto region, which includes Harris County and Galveston, has the most people living in a floodplain: almost 2.5 million people are in a 100- or 500-year floodplain. The Lower Rio Grande region, which spans much of Texas' southern border and includes the Rio Grande Valley, is next with about 1 million people at risk.

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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.

Texas used existing flood data to create the maps that served as a baseline that regions could add to with their own flood hazard maps — if any existed — and supplement with knowledge from local water managers. In regions with very little data, gaps were filled with data from a contracted flood risk modeling data company called Fathom.

Sixty-three of Texas' 254 counties had no existing flood hazard information prior to the planning effort, according to the TWDB.

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.

The TWDB often functions as a water infrastructure bank and intends to use the planning process to help finance the construction of flood prevention projects with low-cost loans and grants, although the cost of the projects far outweighs the money that's been dedicated to the agency by lawmakers.

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During the 2023 legislative session, lawmakers allocated $625 million to finance flood prevention projects through the Flood Infrastructure Fund. Once the statewide flood plan is finalized, projects will have to be included in the plan in order to access those funds.

Another $550 million of the surplus was allocated to the coastal barrier project that includes the Ike Dike.

Disclosure: The Texas General Land Office has been a financial supporter of The Texas Tribune, a nonprofit, nonpartisan news organization that is funded in part by donations from members, foundations and corporate sponsors. Financial supporters play no role in the Tribune's journalism. Find a complete list of them here.


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This article originally appeared in The Texas Tribune at https://www.texastribune.org/2023/07/28/texas-floodplain-water-development-board-flood-plan/.

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The Texas Tribune is a member-supported, nonpartisan newsroom informing and engaging Texans on state politics and policy. Learn more at texastribune.org.

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These Texans aren’t taking buyouts despite repeated floods

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by By Emily Foxhall, The – 2024-05-20 05:00:00

SUMMARY: Recent floods in Harris County, Texas, have devastated homes along the San Jacinto River. Tom Madigan, who owns multiple properties, quickly started repairs without knowing the Harris County Flood Control District aims to buy out such flood-prone properties. The region has a longstanding buyout program to remove homes from high-risk flood areas, with about 800 out of 2,400 targeted properties purchased. However, buyouts are voluntary and often insufficient for low-income residents. Despite the program, many choose to stay due to affordability and community ties, while others like Madigan remain skeptical of receiving a fair offer.

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Top left: Jason Hodges pressure washes an AC unit affected by flooding at a rental property owned by Madigan. Top right:Rodger Pace's back tattoo reads, “God Giveth and... God Taketh Away.” Bottom: Elvia Bethea, center left, passes out donated goods to John Smith III, left, John Gray, center right, and Jose Tavares, right, who were all affected by flooding.

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Some people choose to live with the risk of flooding

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Vehicles and other damaged items line a street in Harris County outside Houston, Texas, on May 14, 2024.

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“Where are you going to go?”

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Trump, Abbott speak at Dallas NRA convention

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by By Annie Xia, The – 2024-05-18 19:24:41

SUMMARY:

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Gov. Greg Abbott speaks at the NRA Leadership Forum at the Kay Bailey Hutchison Convention Center in Dallas on May 18, 2024.

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Photos: Texas storms cause widespread damage in Houston area

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by By Marie D. De Jesús and Antranik Tavitian, Houston Landing, The – 2024-05-17 14:45:42

SUMMARY: Severe storms hit the Houston area on Thursday evening, resulting in widespread damage, four fatalities, and power outages affecting nearly 900,000 homes and businesses. The Houston Office of Emergency Management is beginning recovery efforts, while officials discourage unnecessary travel. Reports from Houston Landing detail the extent of the destruction, which includes knocked-down power lines and damaged buildings, such as the Wells Fargo Plaza and the CenterPoint Energy Plaza. Photos provided by Antranik Tavitian and Marie D. De Jesús illustrate the damage seen across the region.

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The Muncy family looks at damaged buildings in downtown after a storm broke windows in many of the skyscrapers on Louisiana Street, Friday, May 17, 2024, in Houston. (Antranik Tavitian / Houston Landing)

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A car roof is flattened after bricks from a partially collapsed wall of Conejo Malo fell on it in downtown, Friday, May 17, 2024, in Houston. (Antranik Tavitian / Houston Landing)

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The damaged Well Fargo Plaza building in downtown, Friday, May 17, 2024, in Houston. (Antranik Tavitian / Houston Landing)

A worker clears damaged windows in the CenterPoint Energy Plaza building in downtown, Friday, May 17, 2024, in Houston. (Antranik Tavitian / Houston Landing)

Debris after the storm on Louisiana Street in downtown, Friday, May 17, 2024, in Houston. (Antranik Tavitian / Houston Landing)

From left, Luke, 8, Ryan, 6, Jaqueline, and Tanner Muncy, 6, look at the damage and debris on Louisiana Street the morning after a storm in downtown, Friday, May 17, 2024, in Houston. (Antranik Tavitian / Houston Landing)

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Thursday evening, storms smashed several transmission power lines near Highway 99 on May 16, 2024, in Cypress. (Marie D. De Jesús / Houston Landing)

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A man stands by a fallen branch blocks TC Jester Blvd. heading south because a large tree is impeding the roadway after a storm, Thursday, May 16, 2024, in Houston. (Marie D. De Jesús / Houston Landing)

Thursday evening storms smashed several transmission power lines near Highway 99 on May 16, 2024, in Cypress. (Marie D. De Jesús / Houston Landing)

Thursday storms brought in gusts of winds up to 80 mph, damaging homes in Cypress on May 16, 2024. (Marie D. De Jesús / Houston Landing)

Street signs down on the corner of Bridge Creek Terrace Drive and Westgreen Blvd. in Cypress, Friday, May 17, 2024. (Marie D. De Jesús / Houston Landing)

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Anastasia Gill, 38, takes a call in the darkness of her backyard after losing electricity on May 16, 2024, in Houston. The roof of her house sustained damages after a tree fell on it during the storm on Thursday. (Marie D. De Jesús / Houston Landing)

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