Diablo Hydroelectric Power Plant (NRIS 89000498)

Address: Off WA 20 at W end of Diablo Lake, Newhalem, Washington. County/parish: Whatcom.

1 contributing building.

Added to the National Register of Historic Places June 30, 1989.

Part of Hydroelectric Power Plants in Washington State, 1890--1938 MPS (NRIS 64500703).


  • Constant Angle Arch Dam Co.
  • Winston Brothers

Architectural styles:

  • Other

National Park Service documentation: https://npgallery.nps.gov/AssetDetail/NRIS/89000498