Lower Falls at Grand Canyon of Yellowstone At 308 feet, the Lower Falls is the tallest waterfall in Yellowstone. It’s more than twice as high as Niagara Falls. The amount of water flowing over the falls varies greatly from 63,500 gal/sec in the spring to 5,000 gal/sec in the fall. Getting a photograph closer to the base along the Yellowstone River requires a fairly strenuous hike down to the river bed. Someday, I’ll take the time to hike down and, oh yes, back up.
