The Palouse Falls lies on the Palouse River, about 4 mi (6.4 km) upstream of the confluence with the Snake River in southeast Washington, United States. The falls are 200 ft (61 m) in height. The falls consists of an upper falls with a drop of ~20 feet (6.1 m) which lies 1,000 feet (300 m) north northwest of the main drop, and a lower falls, with a drop of ~180 feet (55 m).
The canyon at the falls is 115 meters (377 ft) deep, exposing a large cross-section of the Columbia River Basalt Group. These falls and the canyon downstream comprise an important feature of the channeled scablands created by the great Missoula Floods that swept periodically across eastern Washington and across the Columbia River Plateau during the Pleistocene epoch.