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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Flow down diversion channel from 12' pipe to Rancheria Creek during 490 c.f.s. test flow.
Type: Visual Materials(Opens in new tab)
Date: 7/15/1955
Call number: photCL SCE 02 - 43300
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
Visual Materials
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
Visual Materials
Portal Powerhouse - Test flow of 490 c.f.s. through the enlarged Rancheria Creek channel.
photCL SCE 02 - 43301
Portal Powerhouse
Visual Materials
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
Visual Materials
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
Visual Materials
Portal Powerhouse - Water leakage through toe of tunnel dump fill between diversion ditch and powerhouse area during 490 c.f.s. flow.
photCL SCE 02 - 43299
Portal Powerhouse - View down Rancheria Creek channel - first diversion
Visual Materials
Portal Powerhouse - View down Rancheria Creek channel - first diversion - 250 cfs - 8:00 a.m..
photCL SCE 02 - 43284