Visual Materials
Portal Powerhouse
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Big Creek, Huntington Lake Dams
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Big Creek, Huntington Lake Dams - Rock detention dike across Rancheria Creek approx. 1000 feet upstream from Portal Powerhouse Dike constructed to create stilling basin for overflow from surge chamber. Flow about 2 cfs.
photCL SCE 02 - 44836

Portal Powerhouse
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Portal Powerhouse - Diverting tunnel flow from Rancheria Creek channel across main channel and into Potter Creek channel.
photCL SCE 02 - 43308

Portal Powerhouse
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Portal Powerhouse - Test flow of 490 c.f.s. through the enlarged Rancheria Creek channel.
photCL SCE 02 - 43301

Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Impervious fill upstream and start of rock fill in sluicepipe area of forebay dam.
photCL SCE 02 - 43322

Portal Powerhouse
Visual Materials
Portal Powerhouse - Flow down diversion channel from 12' pipe to Rancheria Creek during 490 c.f.s. test flow.
photCL SCE 02 - 43300

Portal Powerhouse
Visual Materials
Portal Powerhouse - Tailrace channel from highway bridge. Approx. 1850 cfs flow from Ward Tunnel and Rancheria Creek.
photCL SCE 02 - 44564