Flash floods in Texas killed at least 82 people over the Fourth of July holiday weekend and left others still missing, including girls attending a summer camp.

Crews trudged through debris and waded into swollen riverbanks in the search for victims of catastrophic flooding over the July Fourth weekend that killed more 80 people in Texas, including more than two dozen campers and counselors from an all-girls Christian camp.

"Camp Mystic is grieving the loss of 27 campers and counselors following the catastrophic flooding on the Guadalupe River," the camp said in a statement.