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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - construction with 440 cfs. diversion from Ward Tunnel.
Type: Visual Materials(Opens in new tab)
Date: 10/4/1955
Call number: photCL SCE 02 - 43761
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 flow diversion from 12' pipe [Ward Tunnel]. Flow about 425 cfs..
photCL SCE 02 - 43643
Portal Powerhouse
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Portal Powerhouse - Ward tunnel diversion from Powerhouse construction.
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Portal Powerhouse - Approx. 300 cfs in tunnel diversion.
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Portal Powerhouse
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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 - First Diversion [cut into tunnel] 250 cfs - 8:30 a.m..
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