Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - Rock fill dike across Rancheria Creek to form detention pond for surge overflow.
photCL SCE 02 - 44818
Visual Materials
Big Creek, Huntington Lake Dams - Rancheria Creek at its confluence with leakage water from construction activities at Portal Powerhouse. Estimated flow about 1 cfs.
photCL SCE 02 - 44837
Visual Materials
Big Creek, Huntington Lake Dams - Rancheria Creek near Portal Powerhouse, showing temporary road crossing, which also dams the flow of the creek.
photCL SCE 02 - 44838
Visual Materials
Big Creek, Huntington Lake Dams - "Rock Meadow" - Floor deposited debris from 1955-1956 floods - about 200 feet from streem bed in back ground. Estimated flow of Big Creek at this point: about 1 cfs.
photCL SCE 02 - 44841
Visual Materials
Big Creek, Florence Lake Dam - Channel below Florence Lake spillway with 1000 cfs spill.
photCL SCE 02 - 30719
Visual Materials
Portal Powerhouse - Outlet end and anchor on concrete overflow pipe from surge chamber.
photCL SCE 02 - 44819
