Summer storms create elusive waterfalls in Arches National Park

A summer waterfall spills over a cliffside in Arches National Park. Photo: NPS Photo/ N. Herbert

MOAB, Utah — Summer rains are bringing fleeting waterfalls to the desert landscapes of Southwest Utah’s national parks. At Arches National Park, these falls run intermittently during monsoon season, which typically begins in late July or early August and runs through September.

While there are no permanent waterfalls in the park, these seasonal cascades can form after significant storms or monsoons. They only appear when enough rain falls, though, and often disappear quickly as the water source drains or evaporates.

Arches receives just 8–10 inches of rain annually, most of it arriving during these powerful, and often sudden, summer storms.

“While these seasonal storms can bring out beautiful waterfalls and unique views of the park, they can also lead to risks such as flash floods and lightning strikes,” park officials warned. When lightning is present, avoid lone trees, cliff edges, and high ridges. If you’re in the open, crouch low to the ground and return to your vehicle if possible.

When hiking in a storm, never attempt to cross a flooding wash. Just six inches of fast-moving water can knock a person off their feet, and a foot of water is enough to wash away a vehicle.

Before heading out, check the weather forecast (both for your hiking area and upstream) and consult with a park ranger about possible storms and other safety tips.