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Visual Materials

Portal Powerhouse - Forebay

Description: Portal Powerhouse - Forebay - Drilling & placing powder for spillway excavation.
Type: Visual Materials(Opens in new tab)
Date: 8/10/1955
Call number: photCL SCE 02 - 43616
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 - Drilling rock for spillway excavation as seen from dam abutment.
photCL SCE 02 - 43628
Portal Powerhouse - Portal Forebay
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Portal Powerhouse - Portal Forebay - Spillway from downstream of crest.
photCL SCE 02 - 43792
Portal Powerhouse - Portal Forebay
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Portal Powerhouse - Portal Forebay - Pilot discharge channel from spillway.
photCL SCE 02 - 43793
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Showing forms for concrete spillway crest.
photCL SCE 02 - 43765
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Cleaning and trimming rock foundation for spillway crest concrete.
photCL SCE 02 - 43759
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Spillway and dam from south end of spillway.
photCL SCE 02 - 43817