In what experts call "Flash Flood Alley," the terrain reacts quickly to rainfall steep slopes, rocky ground, and narrow riverbeds leave little time for warning.

At least 82 people are dead after heavy rain led to "catastrophic" flooding in Texas. Kerr County was hit the hardest, with at least 75 deaths, including 27 children. President Donald Trump signed a disaster declaration for the county and the Federal Emergency Management Agency is on the ground there.

Walston drove from his home to the Center Point Bridge on FM 480 near Highway 27, where he shot video of the river below. He recorded nearly 38 minutes of surging water as it rose over 20 feet, carrying massive cypress trees, debris and even a house.

The Guadalupe River flooded early July 4 as heavy rains prompted all in the area to evacuate. Additionally, emergency responders are frantically searching

With more than 170 still missing, communities must reconcile how to pick up the pieces around a waterway that remains both a wellspring and a looming menace.

Flash flooding is common enough around the crescent-shaped region from Dallas through the Hill Country, the area earned the nickname "Flash Flood Alley."

Two 8-year-old sisters from Dallas who had just completed 2nd grade. A beloved soccer coach and teacher. An Alabama elementary school student away from home.

Teens at the Pot O’ Gold Christian Camp near Comfort, Texas, were swamped by a wall of water as they tried to escape.

Flash floods last week in Texas caused the Guadalupe River to rise dramatically, reaching three stories high in just two hours