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Portal Powerhouse



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  • Big Creek, Huntington Lake Dams

    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

    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

    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 - Forebay

    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

  • Portal Powerhouse

    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

    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