Visual Materials
Portal Powerhouse - Forebay
- Description
- Portal Powerhouse - Forebay - View from downstream of sluice pipe foundation excavation.
- Date
- 7/20/1955
- Call number
- photCL SCE 02 - 43588
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108

Visual Materials
Portal Powerhouse - Forebay - Foundation excavation at location for sluice pipe, viewed from upstream.
photCL SCE 02 - 43586

Visual Materials
Portal Powerhouse - Forebay - Sluice pipe and encasement viewed from downstream.
photCL SCE 02 - 43613

Visual Materials
Portal Powerhouse - Portal Forebay - Downstream side of dam showing outlet end of 24" sluice pipe.
photCL SCE 02 - 43786

Visual Materials
Portal Powerhouse - Forebay - Completed concrete encasement around 24" diameter sluice pipe through rock fill downstream section.
photCL SCE 02 - 43536

Visual Materials
Portal Powerhouse - Forebay - Installing 6" dia. drain in foundation, sluice pipe area, prior to any fill. Note form for concrete cutoff around pipe. One of three installed.
photCL SCE 02 - 43323

Visual Materials
Portal Powerhouse - Forebay - Sluice pipe viewed from upstream.
photCL SCE 02 - 43612