Two days before the waters of the Guadalupe River swelled into a deadly and devastating Fourth of July flood in Kerr County, Texas, engineers with a California-based company called Rainmaker took off in an airplane about 100 miles away and dispersed 70 grams of silver iodide into a cloud.

The flash floods killed at least 135 people in Texas over the holiday weekend, with most deaths along the Guadalupe River in Kerr County.

From jewelry to a heart-shaped summer camp sign, these are some of the objects found in the wake of this month's devastating floods.

Kerrville's city manager met with the deputy head of mission from the Czech Republic's U.S. embassy Saturday at the local emergency operations center.

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.

New flood warnings have been issued along the Guadalupe River in Texas less than two weeks after flooding killed more than 100 people.

At least 135 people died in the flood, the Texas Tribune reported. Among the dead were campers and counselors at Camp Mystic, a Christian girls summer camp on the Guadalupe River who were lost when a torrent of rain thrashed the region before sunrise.

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.

Flash flooding is common enough around the crescent-shaped region from Dallas through the Hill Country, the area earned the nickname "Flash Flood Alley."

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.

Kerr County teams have located most of the 160 people previously unaccounted for in the wake of the July 4th Texas flooding, with just three still missing.