Washington Water Power Company Post Falls Power Plant, North Channel Dam, West of intersection of Spokane & Fourth Streets, Post Falls, Kootenai County, ID

Significance: It is significant as the main controlling works for the Lake Coeur D'Alene, the natural impoundment for the entire Spokane River hydroelectric system. The North Channel dam is an L-shaped, concrete gravity flow dam. The structure's crest measures approximately 430' in length and ca. is 31' high. The largest section of the dam features a 100' rolling sector gate, with a series of 8 tainter gates located along the wing portion of the dam.
Unprocessed Field note material exists for this structure: N1469
Survey number: HAER ID-32-B
Building/structure dates: 1904-1906 Initial Construction