 Hazards hikers can encounter along the 'Boucher Trail include dehydration, sudden rainstorms, flash flooding, loose footing, rockfall, encounters with wildlife, and extreme heat.At the Colorado River, additional hazards include hypothermia (due to the river's consistently cold temperatures), trauma (due to collisions with boulders in rapids), and drowning.Hikers are more likely to find solitude and isolation in addition to other hazards related to desert hiking.