Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - Forebay - Loading tunnel muck for placement in dam downstream zone.
photCL SCE 02 - 43629
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 - Select tunnel muck filter zone blanket downstream portion of dam maximum section.
photCL SCE 02 - 43595
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 - Upper portion of intake channel and portal of tunnel.
photCL SCE 02 - 43756
Visual Materials
Portal Powerhouse - Forebay - Placing first fill in impervious section under location of sluice pipe. Note dozer pushing layer of saturated & disturbed surface material, exposing firm foundation, before fill placement.
photCL SCE 02 - 43315
