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.

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.

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