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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Breaking up large boulders in pool at end of 12' diameter pipe.
Type: Visual Materials(Opens in new tab)
Date: 7/27/1955
Call number: photCL SCE 02 - 43325
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 - Setting pump for the first pumping of pool at end of 12' diameter pipe.
photCL SCE 02 - 43309
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
Portal Powerhouse
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Portal Powerhouse - Applying Protex protective coating to first section of 8.5' diameter penstock pipe prior to pulling into 12' diameter pipe for second section make-up.
photCL SCE 02 - 43570
Portal Powerhouse
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Portal Powerhouse - View of 8.5' diameter penstock pipe supports inside 12' diameter outlet pipe, Ward Tunnel.
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Portal Powerhouse
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Portal Powerhouse - Placing concrete in supporting wall under end of 12' diameter pipe. Excavating old concrete anchor. [Forming new] foundation & Wye branch anchor.
photCL SCE 02 - 43529
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