Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - Forebay - East portion of dam foundation showing contact between impervious zone, filter, & tunnel muck zone.
photCL SCE 02 - 43614
Visual Materials
Portal Powerhouse - Forebay - Borrow area 3, source of tunnel muck for downstream zone of dam.
photCL SCE 02 - 43611
Visual Materials
Portal Powerhouse - Looking downstream from above Ward Tunnel.
photCL SCE 02 - 43944
Visual Materials
Portal Powerhouse - Downstream thru spray chamber at approx. 1800 cfs flow thru Ward Tunnel.
photCL SCE 02 - 43921
Visual Materials
Portal Powerhouse - Forebay - Upstream toe of rock fill section of forebay dam showing pervious filter layer in place between rock fill and impervious sections of embankment.
photCL SCE 02 - 43549
Visual Materials
Portal Powerhouse - Forebay - Completed concrete encasement around 24" diameter sluice pipe through rock fill downstream section.
photCL SCE 02 - 43536
