According to Lt. Gov. Dan Patrick, at least 20 children are unaccounted for at Camp Mystic, an all-girls camp of 750 campers. He says this does not mean they've been lost. "They could be in a tree. They could be out of communication. We're praying for all those missing to be found alive," he said.

Follow live updates on the Texas floods, where the death toll has surpassed 100, including Camp Mystic counselors and campers.