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.

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.

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.

Camille Santana tragically lost her life during the Fourth of July floods that swept through Central Texas. Three other members of her family remain missing.

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.

The region of Texas where flash flooding killed more than 90 people -- including dozens of campers -- is known for its tendency to experience flood emergencies.

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

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

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

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