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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - installation of final design of restrictive baffle at end of by-pass pipe.
Type: Visual Materials(Opens in new tab)
Date: 11/19/1955
Call number: photCL SCE 02 - 43927
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
Portal Powerhouse
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Portal Powerhouse - Side spillway cut to relieve excessive back pressure during high flow. Final baffle now in place at end of penstock.
photCL SCE 02 - 43928
Portal Powerhouse
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Portal Powerhouse - Close-up of 1500 cfs discharge from end of by-pass pipe - unrestricted end area.
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Portal Powerhouse - 1500 cfs flow thru by-pass pipe with unrestricted end area.
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Portal Powerhouse
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Portal Powerhouse - By-pass pipe after installation of three horizontal baffles. With flow of 1000 cfs, upper two baffles were lost, due to excessive vibration.
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Portal Powerhouse
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Portal Powerhouse - Welding wye bend and setting by-pass pipe.
photCL SCE 02 - 43726