Snoqualmie Falls Hydroelectric Power Plant Historic District

Under construction
WA 202, .5 mi. N of Snoqualmie, Snoqualmie, Washington

Photos 

Snoqualmie Falls Hydroelectric Project

1. GENERAL VIEW OF SNOQUALMIE FALLS FROM THE PUBLIC OVERLOOK

Photo from the Historic American Engineering Record

View photos at Library of Congress

Map 

Description 

The first group of buildings and structures, known as Plant 1 (described below), were listed in the National Register in 1976 under the name ‘Snoqualmie Falls Cavity Generating Station’.

The Snoqualmie Falls Hydroelectric Project was completed in 1898 and includes a cavity generating station, constructed some 250 feet below the surface of the river and about 300 feet from the edge of the falls. It is one of the few cavity plants in the United States and one of possibly two in the nation that contains its turbines, generators, and operators controls all within the cavity. Thomas T. Johnston, a consulting engineer from Chicago, executed the design and Charles Baker, president and chief engineer of the Snoqualmie Falls Power Company, oversaw the design and construction of the project. The Snoqualmie Falls cavity plant is a national civil engineering landmark. -- Historic American Engineering Record (HAER WA-21)

National Register information 

Status
Posted to the National Register of Historic Places on October 24, 1992
Reference number
92001324
Architectural styles
Other architectural type; American Movement: Bungalow/Craftsman; Vernacular industrial
Areas of significance
Engineering; Industry
Level of significance
National
Evaluation criteria
C - Design/Construction; A - Event
Property type
District
Historic function
Energy facility
Current function
Energy facility
Periods of significance
1875-1899; 1900-1924
Significant years
1898; 1910
Number of properties
Contributing buildings: 5
Contributing structures: 8
Non-contributing buildings: 4
Non-contributing structures: 3

Update Log 

  • August 7, 2012: Updated by Jim Allen: Expanded discription
  • July 15, 2010: Updated by K. A. Erickson: Undergoing reconstruction at this time.

Related landmarks 

Sources