Visual Materials
Portal Powerhouse - Forebay
- Description
- Portal Powerhouse - Forebay - Progress picture of forebay earth and rock fill dam.
- Date
- 9/8/1955
- Call number
- photCL SCE 02 - 43700
Visual Materials
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - Forebay - Impervious fill upstream and start of rock fill in sluicepipe area of forebay dam.
photCL SCE 02 - 43322
Visual Materials
Portal Powerhouse - Forebay - Upstream toe of rock fill section of forebay dam showing pervious filter layer in place between rock fill and impervious sections of embankment.
photCL SCE 02 - 43549
Visual Materials
Portal Powerhouse - Forebay - Progress picture placing fill in dike embankment.
photCL SCE 02 - 43550
Visual Materials
Portal Powerhouse - Forebay - View from right abutment showing site preparation for downstream rock fill portion of the dam.
photCL SCE 02 - 43306
Visual Materials
Portal Powerhouse - Forebay - Progress picture showing placement of upstream impervious fill in sluice pipe area, to top of 24" sluice pipe concrete encasement.
photCL SCE 02 - 43327
Visual Materials
Portal Powerhouse - Forebay - Progress picture forebay dam. View from right abutment looking toward left abutment.
photCL SCE 02 - 43333