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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Temporary diversion channel; stream gauger's cabin in background.
Type: Visual Materials(Opens in new tab)
Date: 8/11/1955
Call number: photCL SCE 02 - 43646
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 - Temporary diversion channel on east side of powerhouse. Small left channel carries leakage water from east embankment.
photCL SCE 02 - 43853
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Portal Powerhouse - Potter Creek channel used as temporary diversion. View from Hwy Bridge looking upstream.
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Portal Powerhouse - Starting to fill Potter Creek temporary diversion channel after returning tunnel flow to permanent tailrace.
photCL SCE 02 - 43686
Portal Powerhouse - View from east bank of tailrace channel
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Portal Powerhouse - View from east bank of tailrace channel - temporary diversion channel.
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Portal Powerhouse - excavating tailrace channel to final grade in section up-stream from Highway Bridge.
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Portal Powerhouse
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Portal Powerhouse - Intake Channel erosion thru blanket and blanket protection since placement in 1955. [stream measurement station & weir]
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