Dworshak Dam, Hydroelectric station in Clearwater County, Idaho

Dworshak Dam is a 717-foot concrete gravity dam on the North Fork of the Clearwater River, about four miles northwest of Orofino. Its broad downstream face slopes to a stilling basin, with two narrow spillway chutes side by side releasing water; a low parapet runs along the crest, and a rectangular concrete powerhouse sits at the base on the left. It is the tallest straight-axis concrete dam in the Western Hemisphere.

The project received authorization in 1962 and construction by the U.S. Army Corps of Engineers took place between 1966 and 1973. Originally called Bruces Eddy Dam, the structure was renamed to honor a regional political figure.

The dam is named for Senator Henry Dworshak (1894–1962), who helped secure congressional approval; the project was authorized in 1962 as Bruces Eddy Dam and later renamed in his honor. The Dworshak National Fish Hatchery, built to offset the loss of steelhead migration, releases about 3.4 million juveniles each year.

The dam is readily accessible by car from nearby highways with viewing areas along the embankment for visitors. Parking is available in the surrounding area, though access to the working facility itself may be restricted due to security protocols.

Standing 219 meters tall, this concrete gravity dam ranks among the tallest of its kind in North America and impresses by sheer scale. Visitors often find that the structure appears even more massive when viewed from up close than from a distance.