Powerhouse Falls is a 65-foot waterfall on Nespelem River in Okanogan County, Washington, in the Columbia Plateau region. It lies about 11.6 miles north of Coulee Dam and roughly 80.1 miles northwest of Spokane as the crow flies.
At 65 feet it is on the modest side for Washington, where the typical waterfall with a recorded height stands around 82 feet; it ranks 543rd of 941. The tallest single drop is 55 feet. By form it is a tiered waterfall, falling in several distinct steps one after another, combined with a plunge character. It falls in 2 drops.
The Columbia Plateau is a vast expanse of layered basalt flows covered by sagebrush steppe, grassland and dryland wheat. Waterfalls here drop over basalt cliffs in coulees and river canyons carved by ancient floods. Nespelem River carries 3 recorded waterfalls; the biggest of them reaches 80 feet.
Okanogan County holds 76 recorded waterfalls, and several are close by. Spray Falls, a 24-foot veiling plunge waterfall, is under a mile away. Little Nespelem Falls, is under a mile away. Multnomah Falls, an 80-foot tiered horsetail waterfall, is under a mile away.
Powerhouse Falls is located at 48.1328° N, 119.0066° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.