Visual Materials
Portal Powerhouse - Forebay
- Description
- Portal Powerhouse - Forebay - Looking up inlet channel, showing excavation progress.
- Date
- 8/15/1955
- Call number
- photCL SCE 02 - 43548
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108

Visual Materials
Portal Powerhouse - Portal Forebay - Excavation in progress in intake channel.
photCL SCE 02 - 43725

Visual Materials
Portal Powerhouse - Portal Forebay - Looking up shaft, shows inlet tunnel intersection with shaft, temporary ladder.
photCL SCE 02 - 43791

Visual Materials
Portal Powerhouse - Forebay - Progress of excavation in intake channel to vertical shaft.
photCL SCE 02 - 43703

Visual Materials
Portal Powerhouse - Portal Forebay - View across reservoir towards inlet channel, from top of dam.
photCL SCE 02 - 43785

Visual Materials
Portal Powerhouse - Forebay - Lower portion of float well and adjacent portion of communication pipe leading into inlet channel. Photo taken from floor of short section of tunnel in forebay inlet channel.
photCL SCE 02 - 44815

Visual Materials
Portal Powerhouse - Forebay - Inlet channel from top of vertical shaft.
photCL SCE 02 - 43768