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.

More than 170 people are still believed to be missing a week after the forceful floodwater hit over the July Fourth weekend.

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.

Officials in Kerr County, where the majority of the deaths from the July 4 flash floods occurred, have yet to detail what actions they took in the early hours of the disaster.

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.

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

The threat of heavy rain is “slight” for this weekend, but with the ground fully saturated in Kerr County even small amounts of rainfall could cause flooding.