Cheoah Dam on the Little Tennessee River in Graham and Swain counties, North Carolina.

Cheoah Dam on the Little Tennessee River in Graham and Swain counties, North Carolina.

Cheoah Dam on the Little Tennessee River in Graham and Swain counties, North Carolina.

Cheoah Dam on the Little Tennessee River in Graham and Swain counties, North Carolina.

Smoky Mountains (Tennessee, North Carolina). Film includes unidentified locales in the Smoky Mountains, and includes waterwheels in Tennessee and the Cheoah Dam and power plant on the Little Tennessee River in Graham and Swain counties, North…

Smoky Mountains (Tennessee, North Carolina). Film includes unidentified locales in the Smoky Mountains, and includes waterwheels in Tennessee and the Cheoah Dam and power plant on the Little Tennessee River in Graham and Swain counties, North…

Oxbow Dam, also known as Hardy Dam, in Newaygo County, Michigan. 16mm film shot by D.J. Angus in 1930s. [0:14]

Oxbow Dam, also known as Hardy Dam, in Newaygo County, Michigan. 16mm film shot by D.J. Angus in 1930s. [0:14]

Croton Dam in Muskegon, Michigan. 16mm film shot by D.J. Angus in 1930s. [0:23]

Croton Dam in Muskegon, Michigan. 16mm film shot by D.J. Angus in 1930s. [0:23]

Croton Dam in Muskegon, Newaygo County, Michigan.

Powerhouse for Dix Dam, completed in 1927, was constructed across the Dix River three miles upstream from its confluence with the Kentucky River. It was the world's largest stone-filled dam.