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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Opening in 12' pipe [near end of Ward Tunnel] for diversion.
Type: Visual Materials(Opens in new tab)
Date: 7/11/1955
Call number: photCL SCE 02 - 43281
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 - View of tunnel diversion during test flow of 490 cfs. Flow from 6'x12' opening in 12' pipe.
photCL SCE 02 - 43296
Portal Powerhouse
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Portal Powerhouse - View showing leakage through tunnel dump fill from diversion ditch during 490 c.f.s. flow, spilling into pool at end of 12' pipe.
photCL SCE 02 - 43298
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
photCL SCE 02 - 44563
Portal Powerhouse
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Portal Powerhouse - Penstock pipe in cribbing near outlet of Ward Tunnel welded together into pulling sections for installation in tunnel after start of outage.
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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.
photCL SCE 02 - 43297
Portal Powerhouse
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Portal Powerhouse - Concreting pipe supports in Ward Tunnel. View of supports from upper end.
photCL SCE 02 - 43695