Dhaka, July 6 -- Rescue teams continued the desperate search for survivors across central Texas on Saturday, where catastrophic flash floods left at least 51 people dead, including 15 children, and 27 girls missing after a summer camp was overwhelmed by a wall of water.

The disaster struck Kerr County early Friday, when the Guadalupe River surged 26 feet (8 meters) in just 45 minutes before dawn, sweeping away homes, vehicles, and entire camps. At least eight additional deaths were reported in nearby counties, with authorities warning the toll could rise.

The missing girls were attending Camp Mystic, a Christian summer camp situated along the river, where most of the fatalities were recovered. Authorities have not yet confirmed the full...