A flash flood on the Colorado River at Monument Creek, Granite Rapid, Grand Canyon

A flash flood on the Colorado River in Grand Canyon, at the Monument Creek debris fan, at Granite Rapid. River rafters, parked far enough upstream to be safe from the flash flood, observe from a high rock and scout potential changes to Granite Rapid. Photo by Jeff Behan. 

For more information, see: https://grandcanyon.usgs.gov/gisapps/debrisflowflashfloodrisk/