Visual Materials
Portal Powerhouse
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Big Creek, Huntington Lake Dams
Visual Materials
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
Visual Materials
Portal Powerhouse - Outlet end and anchor on concrete overflow pipe from surge chamber.
photCL SCE 02 - 44819

Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Progress picture placing fill in dike embankment.
photCL SCE 02 - 43550

Portal Powerhouse
Visual Materials
Portal Powerhouse - First stage of Surge Tank excavation. Rock near top is decomposed granite.
photCL SCE 02 - 44604

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

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