Skip to content

Visual Materials

Portal Powerhouse - Forebay - Left: placing impervious blanket material



You might also be interested in

  • Portal Powerhouse - Forebay

    Portal Powerhouse - Forebay

    Visual Materials

    Portal Powerhouse - Forebay - Placing impervious blanket on morane slope upstream from right abutment.

    photCL SCE 02 - 43534

  • Portal Powerhouse - Forebay

    Portal Powerhouse - Forebay

    Visual Materials

    Portal Powerhouse - Forebay - Damsite view, borrow area 2 in foreground.

    photCL SCE 02 - 43604

  • Portal Powerhouse - Forebay

    Portal Powerhouse - Forebay

    Visual Materials

    Portal Powerhouse - Forebay - View from station 5+00, looking toward left abutment, showing outcroppings of ledge rock while excavating for upstream cutoff under impervious section.

    photCL SCE 02 - 43311

  • Portal Powerhouse - Forebay

    Portal Powerhouse - Forebay

    Visual Materials

    Portal Powerhouse - Forebay - Placing earthfill upstream from sluice pipe.

    photCL SCE 02 - 43596

  • Portal Powerhouse - Forebay

    Portal Powerhouse - Forebay

    Visual Materials

    Portal Powerhouse - Forebay - Intake channel erosion through blanket & blanket protection since placement in 1955.

    photCL SCE 02 - 44787

  • Portal Powerhouse - Forebay

    Portal Powerhouse - Forebay

    Visual Materials

    Portal Powerhouse - Forebay - East portion of dam foundation showing contact between impervious zone, filter, & tunnel muck zone.

    photCL SCE 02 - 43614