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Visual Materials

Portal Powerhouse - Forebay

Description: Portal Powerhouse - Forebay - Progress picture placing fill in dike embankment.
Type: Visual Materials(Opens in new tab)
Date: 8/15/1955
Call number: photCL SCE 02 - 43550
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
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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.
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