Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - Forebay - Progress picture showing placement of upstream impervious fill in sluice pipe area, to top of 24" sluice pipe concrete encasement.
photCL SCE 02 - 43327
Visual Materials
Portal Powerhouse - Forebay - Sluice pipe viewed from upstream.
photCL SCE 02 - 43612
Visual Materials
Portal Powerhouse - Forebay - Placing earthfill upstream from sluice pipe.
photCL SCE 02 - 43596
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 - 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
Visual Materials
Portal Powerhouse - Forebay - Placing impervious blanket on morane slope upstream from right abutment.
photCL SCE 02 - 43534
