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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Looking downstream from above Ward Tunnel.
Type: Visual Materials(Opens in new tab)
Date: 1/17/1956
Call number: photCL SCE 02 - 43944
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
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Portal Powerhouse - Downstream thru spray chamber at approx. 1800 cfs flow thru Ward Tunnel.
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Portal Powerhouse - Ward tunnel diversion from Powerhouse construction.
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Portal Powerhouse - Select tunnel muck filter zone blanket downstream portion of dam maximum section.
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Portal Powerhouse - construction with 440 cfs. diversion from Ward Tunnel.
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Portal Powerhouse - Portal Forebay - Looking up shaft, shows inlet tunnel intersection with shaft, temporary ladder.
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