It’s a mystery to me why they weren’t taking proactive steps to move structures,” said Syracuse University associate professor Sarah Pralle.

Records released Tuesday show Camp Mystic met state regulations for disaster procedures, but details of the plan remain unclear.

The camp, which was established in 1926, has experienced a long history of flooding from the Guadalupe River, leading to multiple evacuations and damages across the campgrounds, according to CNN. The July 4 flood was the most damaging disaster in the area, followed by a flooding in 1987 in which 10 children at a different camp nearby were killed.