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Visual Materials

Portal Powerhouse - Forebay

Description: Portal Powerhouse - Forebay - Cleaning and trimming rock foundation for spillway crest concrete.
Type: Visual Materials(Opens in new tab)
Date: 10/3/1955
Call number: photCL SCE 02 - 43759
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 - Showing forms for concrete spillway crest.
photCL SCE 02 - 43765
Portal Powerhouse - Portal Forebay
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Portal Powerhouse - Portal Forebay - Spillway from downstream of crest.
photCL SCE 02 - 43792
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Spillway channel from vicinity of crest.
photCL SCE 02 - 43818
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Drilling rock for spillway excavation as seen from dam abutment.
photCL SCE 02 - 43628
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Portal Powerhouse - Forebay - North across rock-protected spillway crest.
photCL SCE 02 - 43816
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Completed concrete encasement around 24" diameter sluice pipe through rock fill downstream section.
photCL SCE 02 - 43536