At least 20 girls are missing from an all-girls Christian summer camp in South Texas after catastrophic floods struck the area in the wake of severe overnight storms.

Heavy rains are unleashing a “catastrophic” and deadly flood of Texas’ Guadalupe River on Friday. People have died in Kerr County in Hill Country and roads are washed out in Kerrville in Hill Country, authorities said.

Widespread rainfall of 4 to 6 inches, with some reports of over 10 inches, has fallen since Thursday evening, prompting multiple flash flood emergencies.