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Photo, Print, Drawing Cushman No. 1 Hydroelectric Power Plant, Potlatch Transmission Line, North Fork of the Skokomish River at Lake Cushman to Hood Canal, Hoodsport, Mason County, WA Cushman Transmission Line

[ Data Pages from Survey HAER WA-26-F  ]

More Resources

[ Photo Captions from Survey HAER WA-26-F  ]

About this Item

Title

  • Cushman No. 1 Hydroelectric Power Plant, Potlatch Transmission Line, North Fork of the Skokomish River at Lake Cushman to Hood Canal, Hoodsport, Mason County, WA

Other Title

  • Cushman Transmission Line

Names

  • Historic American Engineering Record, creator
  • Tacoma City Light
  • Darland, A. F.
  • U.S. Works Progress Administration (WPA)
  • Tacoma Power, sponsor
  • Perrin, Natalie K., historian
  • Miller, Heather Lee, historian
  • Historical Research Associates, Inc., contractor
  • Stamets, John, photographer
  • McPartland, Mary, transmitter

Created / Published

  • Documentation compiled after 1968

Headings

  • -  hydroelectric power plants
  • -  dams
  • -  electric utilities
  • -  power industry
  • -  electric lines
  • -  transmission towers
  • -  utility poles
  • -  cables
  • -  electrical substations
  • -  concrete piers
  • -  concrete foundations
  • -  reservoirs
  • -  reinforced concrete construction
  • -  intakes
  • -  sluices
  • -  pipes (conduits)
  • -  switchyards
  • -  public utilities
  • -  Washington--Mason County--Hoodsport

Latitude / Longitude

  • 47.423039,-123.222609

Notes

  • -  Significance: Cushman No. 1 Hydroelectric Power Plant powerhouse represents a significant achievement in power production for the City of Tacoma. Constructed in response to unprecedented increases in power demands in the city, the Cushman No. 1 Development led to further industrial and commercial expansion. Cushman No. 1 dam is a notable example of medium-head hydroelectric technology from the mid-1920s. Moreover, its construction was an engineering feat, located in steep, nearly inaccessible terrain prone to flooding. The Potlatch (Cushman) Transmission Line is a linear feature composed of a variety of pole structures, transmission cables, conductors, insulators, and mounting equipment. The line stretches from the Cushman No. 1 switchyard to an interchange located south of the Cushman No. 2 switchyard, where the two systems link. From the interchange, two 115-kilovolt (kV) transmission lines travel east-northeast approximately 21 miles, crossing the Hood Canal, the Skokomish Estuary, and the North Bay of Case Inlet, to the Vaughn Tap. The Vaughn Tap, located north of the town of Vaughn and just east of the town of Allyn on the Kitsap Peninsula, is the point at which the 115-kV transmission lines tie into Tacoma’s integrated transmission system. From the Vaughn Tap, local distribution lines spilt off from the transmission lines, which continue on to the Pearl Street Substation, before continuing on to the historic terminus of the line at the Cushman Substation. The total length of the line is approximately 44 miles.
  • -  Survey number: HAER WA-26-F
  • -  Building/structure dates: 1924-1926 Initial Construction
  • -  Building/structure dates: after 1935 Subsequent Work
  • -  Building/structure dates: 1947 Subsequent Work
  • -  Building/structure dates: 1952 Subsequent Work
  • -  Building/structure dates: 1966 Subsequent Work
  • -  Building/structure dates: 1996 Subsequent Work
  • -  Building/structure dates: 2006 Subsequent Work
  • -  Building/structure dates: 1947-1949 Subsequent Work
  • -  National Register of Historic Places NRIS Number: 88002759

Medium

  • Photo(s): 2
  • Data Page(s): 7
  • Photo Caption Page(s): 1

Call Number/Physical Location

  • HAER WA-26-F

Source Collection

  • Historic American Engineering Record (Library of Congress)

Repository

Control Number

  • wa0919

Rights Advisory

Online Format

  • image
  • pdf

Rights & Access

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  • Rights Advisory: No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. https://aj.sunback.homes/rr/print/res/114_habs.html
  • Reproduction Number: ---
  • Call Number: HAER WA-26-F
  • Access Advisory: ---

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Cite This Item

Citations are generated automatically from bibliographic data as a convenience, and may not be complete or accurate.

Chicago citation style:

Historic American Engineering Record, Creator, Tacoma City Light, A. F Darland, U.S. Works Progress Administration, Sponsor Tacoma Power, Natalie K Perrin, Heather Lee Miller, and Inc Historical Research Associates, Stamets, John, photographer. Cushman No. 1 Hydroelectric Power Plant, Potlatch Transmission Line, North Fork of the Skokomish River at Lake Cushman to Hood Canal, Hoodsport, Mason County, WA. Hoodsport Washington Mason County, 1968. translateds by Mcpartland, Marymitter Documentation Compiled After. Photograph. https://aj.sunback.homes/item/wa0919/.

APA citation style:

Historic American Engineering Record, C., Tacoma City Light, Darland, A. F., U.S. Works Progress Administration, Tacoma Power, S., Perrin, N. K. [...] Historical Research Associates, I., Stamets, J., photographer. (1968) Cushman No. 1 Hydroelectric Power Plant, Potlatch Transmission Line, North Fork of the Skokomish River at Lake Cushman to Hood Canal, Hoodsport, Mason County, WA. Hoodsport Washington Mason County, 1968. McPartland, M., trans Documentation Compiled After. [Photograph] Retrieved from the Library of Congress, https://aj.sunback.homes/item/wa0919/.

MLA citation style:

Historic American Engineering Record, Creator, et al., photographer by Stamets, John. Cushman No. 1 Hydroelectric Power Plant, Potlatch Transmission Line, North Fork of the Skokomish River at Lake Cushman to Hood Canal, Hoodsport, Mason County, WA. trans by Mcpartland, Marymitter Documentation Compiled After. Photograph. Retrieved from the Library of Congress, <aj.sunback.homes/item/wa0919/>.