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Portal Powerhouse - r-notch weir near outlet conduit at toe of forebay dam. Staff gage reads .418



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    Portal Powerhouse - Weir at downstream toe

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    Portal Powerhouse - Portal Forebay

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  • Portal Powerhouse - Forebay

    Portal Powerhouse - Forebay

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    Portal Powerhouse - Forebay - Upstream toe of rock fill section of forebay dam showing pervious filter layer in place between rock fill and impervious sections of embankment.

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    Portal Powerhouse - Forebay

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    Portal Powerhouse - Forebay - ["V" Weir measuring seepage at dam]

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