Xavier Ramirez's family had been at a campground in Texas' Kerr County when the waters of the Guadalupe River began to quickly rise.

Hundreds of residents, campers and visitors were plucked to safety after the Guadalupe River rapidly swelled in Texas Hill Country with little warning.

Kerrville, Texas — Rescuers scoured a devastated central Texas landscape of mangled trees, overturned cars and muck-filled debris Saturday in an increasingly bleak mission to locate survivors, including 27 girls who have not been seen since their camp was slammed with a wall of water in a historic flash flood.