A Grand Canyon flash flood takes out footbridges and the water main

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A Grand Canyon flash flood takes out footbridges and the water main

By Staff Writer  |  1 September 2026

A steel footbridge over Bright Angel Creek in the inner Grand Canyon, the creek running high beneath it

Sixty-two people were lifted out of the inner canyon and about fifteen are unaccounted for. The flood rebuilt the creek bed, destroyed footbridges and damaged the pipeline that supplies the park.

A flash flood tore down Bright Angel Creek in the Grand Canyon on Saturday afternoon, sweeping boulders, metal structures and other debris into the Colorado River. Sixty-two people had been evacuated from the Bright Angel Canyon and Phantom Ranch areas by Sunday morning, and the National Park Service has asked the public for help accounting for about fifteen individuals who may be missing or unaccounted for.

We saw the creek flood, waterfalls coming up out of nowhere; boulders, mud, landslides happening everywhere

Parth Desai, who was hiking in Bright Angel Canyon when the storm began

The casualty count moved through the day and is given here as the moving figure it is. The earliest account, published just after midnight, recorded no injuries. Two later accounts the same day reported one death. A further account reported a second, a man recovered on Sunday evening. None of the three is presented here as final.

What the water did to the assets

The flood destroyed footbridges over the creek and altered the landscape substantially, widening the creek bed and creating what appears to be a new rapid where the debris reached the Colorado. The Bright Angel Campground, Phantom Ranch and parts of the North Kaibab trail were closed on Sunday while damage was surveyed, and rafting trips on the river were halted.

The item with the longest tail is not a bridge. The park service statement records extensive damage to infrastructure in the inner canyon including the Transcanyon Waterline, the pipeline that carries water out of the canyon for use across the park. A footbridge can be replaced in a season. A buried and part-exposed water main running the length of a canyon floor that has just been rebuilt by a debris flow is a different proposition, and it is the asset the operation of the whole park depends on.

This is a reminder of what a dynamic and active landscape Grand Canyon is

Jack Schmidt, director of the Center for Colorado River Studies at Utah State University

Why the design case was not the storm

What gave way here was not a defence against an unforeseeable event. Debris flows in this creek are a known behaviour of this landscape, as the specialist quoted above says in terms, and the park holds photographs of the same creek in flood going back sixty years. What a flow of this kind does is change the bed itself: it does not simply overtop a structure, it removes the ground the structure was founded in and leaves a different channel behind.

That is the reason a like-for-like reinstatement is rarely the right answer after an event like this one, and the reason the survey now under way matters more than the repair that follows it. Anyone who has priced reinstatement in a watercourse knows the trap: the pre-flood drawings describe a channel that no longer exists. More rain and thunderstorms were forecast into Monday, and no date has been given for reopening anything.