The flash flood posed significant risks to hikers and park infrastructure. The sudden onset of the storm left many unprepared, with hikers facing rapidly rising waters, falling rocks, and debris. The three women survived by clinging to a rock ledge, but two fatalities and one missing person highlight the deadly nature of the event. The flood also caused extensive damage to the park's infrastructure, including trails, footbridges, and the critical Transcanyon Waterline, which disrupted water supply to parts of the park. The incident underscores the unpredictable and hazardous conditions that can arise during monsoon season in the Grand Canyon.