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.

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

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.

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.

Lt. Gov. Dan Patrick signaled that he plans to push for the state to pay for sirens erected alongside the Guadalupe River in the wake of the devastating flash floods that led to the deaths of over 100 people.

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