Shoshone Falls in March 2011
|Location||Twin Falls Co., Idaho, U.S.|
|Elevation||3,355 ft (1,023 m)|
|Total height||212 ft (65 m)|
|Number of drops||1|
|Total width||1,000 ft (300 m)|
|3,578 cu ft/s (101.3 m3/s)|
Shoshone Falls (//) is a waterfall on the Snake River in southern Idaho, located approximately five miles (8 km) east of the city of Twin Falls. Sometimes called the "Niagara of the West," Shoshone Falls is 212 feet (65 m) high—45 feet (14 m) higher than Niagara Falls—and flows over a rim 1,000 feet (300 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 and hydroelectricity generation often significantly diminishes water levels in the late 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 Unglaciated freshwater ecoregions.
Prior to the construction of the many dams on the Snake River below the falls, there were tremendous runs of salmon in the Snake River. The salmon fishery at the base of the falls was a primary food source for Bannock and Shoshone Indians. An 1843 expedition claimed that during the springtime runs, spears could be thrown into the water at random and consistently strike salmon.
Only 35% of fish species of the upper Snake River are shared with the lower Snake and Columbia rivers. Fourteen fish species found in the upper Snake are also found in the Bonneville freshwater ecoregion (which covers the Great Basin portion of Utah), but not the lower Snake or Columbia rivers. The upper Snake River is also high in freshwater mollusk endemism (such as snails and clams).
Photochrom of Shoshone Falls ca. 1898
- Report John C. Fremont Expedition of 1843.
- Abell, Robin A., David M. Olson, Eric Dinerstein, Patrick T. Hurley et al. (WWF) (2000). Freshwater Ecoregions of North America: a conservation assessment. Island Press. ISBN 1-55963-734-X
- "American West Photographs". National Archives and Records Administration. Retrieved 2008-03-23.
|Wikimedia Commons has media related to Shoshone Falls.|
- U.S. Geological Survey Geographic Names Information System: Shoshone Falls. Retrieved 2008-05-03.