Visual Materials
Portal Powerhouse - Water trapped during night around powerhouse structure
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Portal Powerhouse
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Portal Powerhouse - View showing leakage through tunnel dump fill from diversion ditch during 490 c.f.s. flow, spilling into pool at end of 12' pipe.
photCL SCE 02 - 43298

Portal Powerhouse
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Portal Powerhouse - Emergency ditch dug to control increased flow thru bank at lower left.
photCL SCE 02 - 43735

Portal Powerhouse - Side Channel Diversion thru openings in 12' diameter pipe
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Portal Powerhouse - Side Channel Diversion thru openings in 12' diameter pipe - approx. 1700 cfs flow in Ward Tunnel
photCL SCE 02 - 44563

Portal Powerhouse
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Portal Powerhouse - South bank of powerhouse excavation with considerable seepage from tunnel diversion.
photCL SCE 02 - 43528

Portal Powerhouse
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Portal Powerhouse - Photo taken shortly after break-through of diversion ditch seepage into tailrace to south of Powerhouse.
photCL SCE 02 - 43932

Portal Powerhouse
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Portal Powerhouse - Cut bank in rear of powerhouse structure showing extent of minor washing due to overflow of seepage water into excavation.
photCL SCE 02 - 43734