In what experts call "Flash Flood Alley," the terrain reacts quickly to rainfall steep slopes, rocky ground, and narrow ...

The Guadalupe River has a history of deadly flooding. Here is a look over the decades. (AP video Marshall Ritzel/Albee Zhang) ...

The Texas Hill Country has been notorious for flash floods caused by the Guadalupe River. Here's why the area is called ...

The flash floods that killed at least 100 people in central Texas last week is only the latest Guadalupe River disaster to ...

Some camps in the region had to be evacuated, and local newspapers described how Camp Mystic was among those cut off from the ...

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

It took just 90 minutes for the river to rise more than 30 feet. A look at the historic flood levels now etched into Central ...

The loss of more than 100 lives, many of them children, to Hill Country floods over the July Fourth weekend has shaken Texans ...

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

The devastation in Texas Hill Country isn't the first time Americans have mourned the victims of deadly floodwaters.

When storms roll in, water rushes downhill fast, gaining speed and force as it moves — often with deadly results.

NPR has compiled a timeline of when local, state and federal officials posted warnings on social media as well as the ...