Visual Materials
Portal Powerhouse
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Portal Powerhouse
Visual Materials
Portal Powerhouse - Progress picture showing lower end of Potter Creek diversion returning to main channel just upstream from highway bridge.
photCL SCE 02 - 43303

Portal Powerhouse
Visual Materials
Portal Powerhouse - Starting to fill Potter Creek temporary diversion channel after returning tunnel flow to permanent tailrace.
photCL SCE 02 - 43686

Portal Powerhouse
Visual Materials
Portal Powerhouse - View from highway bridge showing excavation progress in tailrace channel section isolated by diverting flow into Potter Creek Tunnel.
photCL SCE 02 - 43562

Portal Powerhouse
Visual Materials
Portal Powerhouse - Temporary diversion channel on east side of powerhouse. Small left channel carries leakage water from east embankment.
photCL SCE 02 - 43853

Portal Powerhouse
Visual Materials
Portal Powerhouse - Temporary diversion channel; stream gauger's cabin in background.
photCL SCE 02 - 43646

Portal Powerhouse
Visual Materials
Portal Powerhouse - Record photo of tailrace channel from State Hwy. Bridge before clean-up from Outage on Sept. 10, 1956
photCL SCE 02 - 44817