Opening Hours
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108

Visual Materials
Portal Powerhouse - Diverting tunnel flow from Rancheria Creek channel across main channel and into Potter Creek channel.
photCL SCE 02 - 43308

Visual Materials
Portal Powerhouse - Lowering grade in diversion channel lower Rancheria Creek section
photCL SCE 02 - 43540

Visual Materials
Portal Powerhouse - Up tailrace channel from under highway bridge, after test flow.
photCL SCE 02 - 43909

Visual Materials
Portal Powerhouse - South side of channel, vicinity of highway bridge after 1100 cfs test flow.
photCL SCE 02 - 43905

Visual Materials
Portal Powerhouse - Enlarging Potter Creek channel to handle tunnel flow during excavation of tail race channel.
photCL SCE 02 - 43302

Visual Materials
Portal Powerhouse - Starting to fill Potter Creek temporary diversion channel after returning tunnel flow to permanent tailrace.
photCL SCE 02 - 43686