penstock

enclosed pipe that delivers water to hydroelectric turbines or sewerage systems

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(see also diversion tunnel) class, adit, watercourse, dam element, inverted siphon

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adit - inverted siphon

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Frameless

Air pipe installation for penstocks next to powerhouse, September 7, 1911 (SPWS 690) 1911

Constructing a circular penstock forebay at the western end of the main tunnel, June 15, 1911 (SPWS 611) 1911

Construction of forebay leading into penstock tunnels, May 30, 1911 (SPWS 114) 1911

Installing the penstocks in the tunnels, July 20, 1911 (SPWS 665) 1911

Partially completed powerhouse and penstocks, with view of railroad and cable line, June 26, 1904 (SPWS 635) 1904

Partially completed powerhouse with two generating units in operation, and views of nearby barn, house, shop and penstocks, June (SPWS 634) 1904

Penstock installation on hill toward powerhouse, September 15, 1911 (SPWS 693) 1911

Penstock site viewed from below powerhouse, January 2, 1904 (SPWS 307) 1904

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

Powerhouse and penstock under construction, January 2, 1904 (SPWS 319) 1904

Powerhouse construction site with views of penstock lines, camp no 9, and superintendent's house, April 18, 1904 (SPWS 541) 1904

Tunnel leading from outlet canal to forebay and penstocks, northwest of Lake Tapps, November 17, 1910 (SPWS 146) 1910

Type	Date	Description	Keywords	Notes	Source
link		Freebase entry@			Wikidata
image	1911	Air pipe installation for penstocks next to powerhouse, September 7, 1911 (SPWS 690)			Wikimedia
image	1911	Constructing a circular penstock forebay at the western end of the main tunnel, June 15, 1911 (SPWS 611)			Wikimedia
image	1911	Construction of forebay leading into penstock tunnels, May 30, 1911 (SPWS 114)			Wikimedia
image	1911	Installing the penstocks in the tunnels, July 20, 1911 (SPWS 665)			Wikimedia
image	1904	Partially completed powerhouse and penstocks, with view of railroad and cable line, June 26, 1904 (SPWS 635)			Wikimedia
image	1904	Partially completed powerhouse with two generating units in operation, and views of nearby barn, house, shop and penstocks, June (SPWS 634)			Wikimedia
image	1911	Penstock installation on hill toward powerhouse, September 15, 1911 (SPWS 693)			Wikimedia
image	1904	Penstock site viewed from below powerhouse, January 2, 1904 (SPWS 307)			Wikimedia
image	1922	Penstock tunnels under construction at the Gorge Dam Powerhouse site, April 1922 (SPWS 163)			Wikimedia
image	1904	Powerhouse and penstock under construction, January 2, 1904 (SPWS 319)			Wikimedia
image	1904	Powerhouse construction site with views of penstock lines, camp no 9, and superintendent's house, April 18, 1904 (SPWS 541)			Wikimedia
image	1910	Tunnel leading from outlet canal to forebay and penstocks, northwest of Lake Tapps, November 17, 1910 (SPWS 146)			Wikimedia