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1999-0360 PHOTO: WATER: DAMS: SAN PEDRO DAM View of the construction by hydrolic fill method of the earth-filled San Pedro Dam; shows flumes across the top of the dam, coarse pervious materials washed free of silts and clays at the toes of the dam and clays and silts free of granular, gritty material in the center "puddle" section.
Photographs. Nonprojected graphic
1 photoprint ; 7 5/8 x 9 5/8 in.
East Bay Water Company Dams--California--Contra Costa County Dam construction--California--Contra Costa County Flumes Contra Costa County (Calif.)--Photographs Photographic prints
California Contra Costa County Contra Costa County (Calif.)