Visual Materials
Portal Powerhouse
- Description
- Portal Powerhouse - Flattening south excavation slope between powerhouse site and tunnel diversion channel.
- Date
- 8/9/1955
- Call number
- photCL SCE 02 - 43541
Visual Materials
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - South bank of powerhouse excavation with considerable seepage from tunnel diversion.
photCL SCE 02 - 43528
Visual Materials
Portal Powerhouse - Start of diversion excavation. [exposing section of Ward Tunnel for diversion]
photCL SCE 02 - 43271
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 - Tailrace channel excavation progress in section isolated by diverting tunnel discharge in Potter Creek Channel.
photCL SCE 02 - 43545
Visual Materials
Portal Powerhouse - Record pictures of tailrace channel during outage: Upper end of channel and lower end of tunnel diversion channel used during 1955.
photCL SCE 02 - 43798
Visual Materials
Portal Powerhouse - Progress picture - Excavation in diversion channel to Rancheria Creek.
photCL SCE 02 - 43273