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.

The organizations working together to help the flood victims said that 'no additional in-kind donations (clothing, food, supplies) are needed in Kerrville.' They said the best way to help is with monetary donations.

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

Also: San Antonio mourned the victims in a Travis Park vigil; UTSA said one of its teachers died in the Guadalupe River flood; Kerrville officials said a privately owned drone collided with a helicopter conducting search and rescue operations.

But the Guadalupe River, named in 1689 by Spanish explorers for a revered apparition of the mother of Jesus Christ, also long has held a quiet fury that can unleash powerful, often deadly flooding ...

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