Plans to develop a flood monitoring system in the Texas county hit hardest by deadly floods were scheduled to begin only a few weeks later.

Follow for live updates in the Texas flooding as the death toll rises to 120, as rescue operations start to shift to recovery phase

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."

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

Rain rushing to the Guadalupe took it from a depth of less than 8 feet to 37.5 feet, a deluge with as much volume as an aircraft carrier over five minutes.

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.

Officials at the Comfort Volunteer Fire Department triggered a flood warning siren last week when the Guadalupe River began to swell. If residents in the more than 2,200-person unincorporated community hadn't seen weather alerts on their phones,

Two days before flash floods on the Guadalupe River in Texas killed dozens of campers at a Christian girls summer camp, a state inspector approved operations, noting there was a written plan for responding to natural disasters.