Barber Dam, Embankment dam in Ada County, United States

Barber Dam is a timber-crib embankment dam on the Boise River in Ada County, Idaho, about three miles east of Boise. Its run-of-the-river powerhouse holds two Kaplan turbine generators with a combined capacity of 4.14 MW, operated by Enel Green Power.

The Barber Lumber Company built this dam between 1904 and 1906 to support timber processing operations. Over time, its function shifted to serve residential communities with electrical power.

The National Register of Historic Places recognized the dam in 1978 for its role in local industrial development and engineering achievement.

The dam sits on the Boise River in Ada County, about three miles east of Boise, roughly 8.8 km from the city centre. The powerhouse holds two Kaplan turbine generators with a combined capacity of 4.14 MW, run by Enel Green Power. Water flow is regulated by the Idaho Department of Water Resources, so levels below the dam can change with releases.

The dam features an unusual timber-crib design that reflects early engineering approaches to dam building. This construction method was common in that era but is rarely seen in modern structures.