Visual Materials
Portal Powerhouse
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Portal Powerhouse
Visual Materials
Portal Powerhouse - First Diversion [cut into tunnel] 250 cfs - 8:30 a.m..
photCL SCE 02 - 43287
Portal Powerhouse
Visual Materials
Portal Powerhouse - Silt layer exposed in excavating for upstream cutoff upstream from upstream toe.
photCL SCE 02 - 43312
Big Creek - Mammoth Pool - Looking upstream at East abutment of damsite from diversion tunnel outlet portal
Visual Materials
Big Creek - Mammoth Pool - Looking upstream at East abutment of damsite from diversion tunnel outlet portal.
photCL SCE 06 - 45255
Portal Powerhouse - Progress picture
Visual Materials
Portal Powerhouse - Progress picture - First day of outage. Section of 12' diameter outlet pipe cut out and extending skid rails into tunnel for pulling penstock.
photCL SCE 02 - 44798
Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Exposed bedrock in upstream cutoff between Stations 3+50 and 4+25.
photCL SCE 02 - 43318
Portal Powerhouse
Visual Materials
Portal Powerhouse - During outage, view down channel from point opposite outlet of diversion channel.
photCL SCE 02 - 43799