File:Penstock tunnels under construction at the Gorge Dam Powerhouse site, April 1922 (SPWS 163).jpg

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Summary[edit]

English: Penstock tunnels under construction at the Gorge Dam Powerhouse site, April 1922   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Photographer
Unknown authorUnknown author
Title
English: Penstock tunnels under construction at the Gorge Dam Powerhouse site, April 1922
Description
English: Photographs of the Skagit River Hydroelectric Project constructed between 1918-1961.

The Gorge Dam and Powerhouse were built by Seattle City Light and completed in September of 1924.

A penstock is a conduit or pipe for concentrating the flow of water from a dam reservoir to a powerhouse, resulting in increased water pressure for electrical generation.

Caption on image: Penstock Tunnels, April 1922. F202

PH Coll 45.1-29a

  • Subjects (LCTGM): Tunnels--Washington (State); Penstocks--Washington (State); Excavation--Washington (State)
  • Subjects (LCSH): Dams--Washington (State)--Design and construction
Depicted place Gorge Dam
Date Taken on 1 April 1922
Medium
English: silver gelatin, b&w
institution QS:P195,Q219563
Current location
University of Washington: Special Collections
Accession number
163
Source
English: Seattle Power and Water Supply Collection
Permission
(Reusing this file)
Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Order Number
InfoField
WWDL0321

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