Camp Mystic owners successfully appealed to the Federal Emergency Management Agency to redesignate some buildings that had been considered part of a flood-hazard zone.

Federal regulators repeatedly granted appeals to remove Camp Mystic's buildings from their 100-year flood map, loosening oversight as the camp operated and expanded in a dangerous flood plain in the years before rushing waters swept away children and counselors, a review by The Associated Press found.

Maps show how heavy rainfall and rocky terrain helped create the devastating Texas floods that have killed more than 120 people.