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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Excavation to uncover lower end of 12' pipe.
Type: Visual Materials(Opens in new tab)
Date: 7/9/1955
Call number: photCL SCE 02 - 43278
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

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Portal Powerhouse
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Portal Powerhouse - 12' diameter pipe installed to reduce pressure at portal during high flows. At time, the lower baffle was still there at outlet restricting end area.
photCL SCE 02 - 43917
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Portal Powerhouse - Opening in 12' pipe [near end of Ward Tunnel] for diversion.
photCL SCE 02 - 43281
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Portal Powerhouse - Breaking up large boulders in pool at end of 12' diameter pipe.
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Portal Powerhouse - Outer end of 12' pipe showing install of I-beams for supporting penstock.
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Portal Powerhouse - Setting pump for the first pumping of pool at end of 12' diameter pipe.
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Portal Powerhouse - Excavation for spill pipe of Surge Tank.
photCL SCE 02 - 44605