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Visual Materials

Portal Powerhouse

1 of 2

Description: Portal Powerhouse - Select tunnel muck filter zone blanket downstream portion of dam maximum section.
Type: Visual Materials(Opens in new tab)
Date: 7/28/1955
Call number: photCL SCE 02 - 43595
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

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Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - East portion of dam foundation showing contact between impervious zone, filter, & tunnel muck zone.
photCL SCE 02 - 43614
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Loading tunnel muck for placement in dam downstream zone.
photCL SCE 02 - 43629
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Borrow area 3, source of tunnel muck for downstream zone of dam.
photCL SCE 02 - 43611
Portal Powerhouse
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Portal Powerhouse - Looking downstream from above Ward Tunnel.
photCL SCE 02 - 43944
Portal Powerhouse
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Portal Powerhouse - Downstream thru spray chamber at approx. 1800 cfs flow thru Ward Tunnel.
photCL SCE 02 - 43921
Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Lower portion of float well and adjacent portion of communication pipe leading into inlet channel. Photo taken from floor of short section of tunnel in forebay inlet channel.
photCL SCE 02 - 44815