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

At least 43 people have died and dozens of children are missing in the Texas Hill Country after catastrophic flooding, with officials warning the casualty count will climb as forecasts call for more rain and the risk of further flash floods in the coming days.

Rescuers searched through the night early Sunday for 27 girls missing from a riverside summer camp in Texas, after torrential rains caused devastating floods that killed at least 50 people in the US state.