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Visual Materials

Portal Powerhouse - Forebay

Description: Portal Powerhouse - Forebay - Placing impervious blanket on morane slope upstream from right abutment.
Type: Visual Materials(Opens in new tab)
Date: 8/4/1955
Call number: photCL SCE 02 - 43534
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 - Left: placing impervious blanket material
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Portal Powerhouse - Forebay - Left: placing impervious blanket material - Foreground: material scraped from damsite.
photCL SCE 02 - 43581
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Portal Powerhouse - Forebay - View from station 5+00, looking toward left abutment, showing outcroppings of ledge rock while excavating for upstream cutoff under impervious section.
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Portal Powerhouse - Forebay - Fill placing operation as seen from east abutment.
photCL SCE 02 - 43632
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