I recently took a day trip to Shoshone Falls, near Twin Falls, Idaho. The falls change from year to year and month to month, depending on the amount of water flowing in the Snake River. I am presenting three of my images for your enjoyment.
Sometimes called the "Niagara of the West," Shoshone Falls is 212  feet (64.7 m) high -- 36 feet (10.97 m) higher than Niagara Falls -- and  flows over a rim 900 feet  (274 m) wide. 
A park overlooking the waterfall is owned and operated by the City of  Twin Falls. Shoshone Falls is best viewed in the spring as diversion of  the Snake River for irrigation often significantly diminishes water  levels in the summer and fall.
Shoshone Falls has existed at least since the end of the last ice age,  when the 
Bonneville Flood carved much of the 
Snake River canyon and surrounding valleys. It  is a total barrier to the upstream movement of fish. The falls were the  upper limit of sturgeon, and spawning runs of salmon and steelhead could  not pass the falls. Yellowstone cutthroat trout  lived above the falls in the same ecological niche as Rainbow Trout  below it. Due to this marked difference, the World Wide Fund for Nature  used  Shoshone Falls as the boundary between the Upper Snake and the Columbia  Un-glaciated freshwater eco-regions.