Lower Yellowstone Falls.The lower falls 44°43′05″N 110°29′46″W / 44.71806°N 110.49611°W / 44.71806; -110.49611) are 308 feet (94 m) high,or almost twice as high as Niagara.The volume of water is in no way comparable to Niagara as the width of the Yellowstone River before it goes over the lower falls is 70 feet (22 m), whereas Niagara is a half mile (800 m).
The lower falls descend from the 590,000 year old Canyon Rhyolite lava flow. The lower falls of the Yellowstone is still the largest volume major waterfall in the Rocky Mountains of the United States. The volume of water flowing over the falls can vary from 63,500 USgal/s (240 m³/s) at peak runoff to 5,000 USgal/s (19 m³/s) in the fall. HistoryIt is believed that Jim Bridger may have been the first white American to see the falls in 1846. The Folsom Party, a private group of explorers working in close relationship with the U.S. Government, named the falls in 1869. The earliest images of the falls were drawn by Private Charles Moore, a member of the U.S. Army escort of the Washburn-Langford-Doane Expedition which explored the Yellowstone River in August–September 1870.During the Hayden Expedition of 1871, the falls were documented in photographs by William Henry Jackson and later in paintings by Thomas Moran. In January 1887, Frank Jay Haynes took the first winter photographs of the lower falls.
Over the years the estimates of the height of Lower Falls has varied dramatically. In 1851 Jim Bridger estimated its height at 250 feet. One outrageous newspaper story from 1867 placed its height at "thousands of feet". A map from 1869 gives the falls its current name of Lower Falls for the first time and estimates the height at 350 feet. However the current map lists the Lower Falls at a height of 308 feet.