Previous coverageFederal regulators repeatedly granted appeals to remove Camp Mystic's buildings from a 100-year flood map, easing oversight as the camp operated and expanded in a dangerous flood plain before rushing waters swept away children and counselors,

Rescue operations are ongoing in Central Texas after flash flooding along the Guadalupe River left 23 girls from Camp Mystic unaccounted for. Officials say dozens have died as catastrophic floods continue to ravage the Hill Country.

Former Camp Mystic camper and counselor Claudia Sullivan spoke with NBC News' Tom Llamas about the significance and future of Camp Mystic.

Some camps in the region had to be evacuated, and local newspapers described how Camp Mystic was among those cut off from the outside world. According to a Kerr County history book, floodwaters at Camp Mystic almost reached the top of the dining hall’s stairs.

The death toll from Friday morning’s horrific flooding rose to at least 80 across Texas on Sunday evening, with 68 of the deaths in Kerr County, where Camp Mystic is based.

Flash floods devastate Texas summer camp leaving children missing as catastrophic flooding hits Camp Mystic and families desperately search

Texas Gov. Greg Abbott said at least 161 people are known to be missing, after catastrophic flooding hit the state. The number includes five Camp Mystic campers, a counselor, “another child not associated with the camp” and 12 people “in other parts of the state.

Rescuers backed by additional federal resources will continue searching Sunday for missing children from Camp Mystic and entire families who were swept away during Friday’s catastrophic flooding that