Dozens of people are dead in central Texas in what officials called a "mass casualty event" after devastating flash floods slammed Hill Country, with water rescues taking place along the Guadalupe River.

Catastrophic flooding in Central Texas has prompted rescue and recovery efforts for an unknown number of people, including families in the Houston area.

A flash flood in the Texas Hill Country on the Fourth of July killed more than two dozen people and left dozens more missing, including 27 people at an all-girls summer camp along the Guadalupe River.