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Visual Materials

Portal Powerhouse - Forebay

Description: Portal Powerhouse - Forebay - View from right abutment showing site preparation for downstream rock fill portion of the dam.
Type: Visual Materials(Opens in new tab)
Date: 7/23/1955
Call number: photCL SCE 02 - 43306
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 - View from left abutment showing completed foundation preparation under a portion of rock fill section. Shovel and Dozer excavating in upstream cutoff.
photCL SCE 02 - 43304
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Dam foundation prepared for fill placement near west abutment.
photCL SCE 02 - 43582
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
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Compacting downstream dam foundation near west abutment.
photCL SCE 02 - 43580
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Impervious fill upstream and start of rock fill in sluicepipe area of forebay dam.
photCL SCE 02 - 43322
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Dam site viewed from east abutment.
photCL SCE 02 - 43579