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.

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

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.

It was 1932, just six years after Camp Mystic opened, when an early July rain began falling on the Texas Hill Country around the Guadalupe River. At first, it was a “lovely, gentle rain,” one person said at the time.

Follow along for developments on the July Fourth floods along the Guadalupe River in Kerr County and Central Texas.

A seventh day of searching for more than 100 people still missing after last week's flood.