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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Tailrace channel from highway bridge. Approx. 1850 cfs flow from Ward Tunnel and Rancheria Creek.
Type: Visual Materials(Opens in new tab)
Date: 5/22/1956
Call number: photCL SCE 02 - 44564
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 - Channel below powerhouse structure, flow approx. 1800 cfs thru Ward Tunnel.
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Portal Powerhouse - View of tunnel diversion during test flow of 490 cfs. Flow in diversion ditch from 12' pipe to junction with Rancheria Creek channel.
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Portal Powerhouse
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Portal Powerhouse - Tailrace channel under highway bridge after 1800 cfs flows.
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Portal Powerhouse - South side of channel, vicinity of highway bridge after 1100 cfs test flow.
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Portal Powerhouse - Side Channel Diversion thru openings in 12' diameter pipe
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Portal Powerhouse - Side Channel Diversion thru openings in 12' diameter pipe - approx. 1700 cfs flow in Ward Tunnel
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Portal Powerhouse
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Portal Powerhouse - Ward Tunnel discharge about 200 cfs from State Highway south of Potter Creek Bridge.
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