Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - View of 8.5' diameter penstock pipe supports inside 12' diameter outlet pipe, Ward Tunnel.
photCL SCE 02 - 43560
Visual Materials
Portal Powerhouse - Installing backing I-beams (15") prior to forming for concrete. Strengthening to reduce vibration during high flows.
photCL SCE 02 - 43902
Visual Materials
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
Visual Materials
Portal Powerhouse - installation of final design of restrictive baffle at end of by-pass pipe.
photCL SCE 02 - 43927
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
Visual Materials
Portal Powerhouse - Breaking up large boulders in pool at end of 12' diameter pipe.
photCL SCE 02 - 43325
