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.

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

This map shows where camps along the Guadalupe River were impacted by the July 4 flood. Meteorologists Pat Cavlin and Kim Castro detail how it all happened.

Explore three decades of Guadalupe River Basin flood data by county with our interactive, searchable database.

Hill Country residents and volunteers on Tuesday continued picking up the pieces that the deadly waterway left behind days earlier.

A Texas Hill Country resident is leading a community effort to collect, clean, and return sentimental items found washed ashore after the Guadalupe River floods, connecting people through a dedicated Facebook group.

Without a modern flood warning system, emergency officials monitor four sensors along the Guadalupe River – including one that was knocked out in the

Aidan Heartfield was on the phone with his dad when their family’s cabin was swept away in the Texas floods. A team is searching for any signs of Heartfield.