Portal Powerhouse

Description: Portal Powerhouse - Draft tube gates set temporarily in place till work resumes next year.
Type: Visual Materials(Opens in new tab)
Date: 10/15/1955
Call number: photCL SCE 02 - 43779
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
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Portal Powerhouse - First concrete around draft tube.
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Portal Powerhouse - Foundation excavation in firm decomposed granite draft tube side of powerhouse. Excavation approx. 1' above final grade.
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Portal Powerhouse - Setting first section of draft tube
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Portal Powerhouse - Setting first section of draft tube - progress picture.
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Portal Powerhouse - Forms and steel in place for Generator Foundation.
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Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Inlet channel from vertical shaft shows blanket in place.
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Portal Powerhouse
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Portal Powerhouse - Side spillway cut to relieve excessive back pressure during high flow. Final baffle now in place at end of penstock.
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