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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Portal Forebay - Looking north-west - shows rock-lined upstream face of dam.
Type: Visual Materials(Opens in new tab)
Date: 9/15/1955
Call number: photCL SCE 02 - 43857
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
Visual Materials
Portal Powerhouse - Portal Forebay - Dam looking north-east shows compacting and lining upstream face with rock.
photCL SCE 02 - 43858
Portal Powerhouse - Portal Forebay
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Portal Powerhouse - Portal Forebay - Reservoir looking north, shows northeast end of dam.
photCL SCE 02 - 43855
Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Upstream toe of rock fill section of forebay dam showing pervious filter layer in place between rock fill and impervious sections of embankment.
photCL SCE 02 - 43549
Portal Powerhouse - Portal Forebay - Looking west
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Portal Powerhouse - Portal Forebay - Looking west - shows cutting of channel to vertical shaft.
photCL SCE 02 - 43856
Portal Powerhouse - Forebay
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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.
photCL SCE 02 - 43311
Portal Powerhouse
Visual Materials
Portal Powerhouse - Portal Forebay - South-west end of dam - shows compacting with sheep's foot roller.
photCL SCE 02 - 43859