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 - Forebay - Inlet channel from top of vertical shaft.
photCL SCE 02 - 43768

Visual Materials
Portal Powerhouse - Forebay - Inlet channel from vertical shaft shows blanket in place.
photCL SCE 02 - 43767

Visual Materials
Portal Powerhouse - Forebay - Looking up inlet channel, showing excavation progress.
photCL SCE 02 - 43548

Visual Materials
Portal Powerhouse - Forebay - Upper portion of intake channel and portal of tunnel.
photCL SCE 02 - 43756

Visual Materials
Portal Powerhouse - Excavation in inlet channel near vertical shaft north-west approx. 18' above bottom grade.
photCL SCE 02 - 43547

Visual Materials
Portal Powerhouse - Forebay - Intake channel erosion through blanket & blanket protection since placement in 1955.
photCL SCE 02 - 44787