Commence Constructing San Leandro Dam
The East Bay Water Company has taken preliminary steps in the construction of the $3,000,000 upper San Leandro, Cal., wafer development projects, according to an announcement by George H. Wilhelm, vice-president of the company. The project includes the construction of an earthen dam 185 feet high and 656 feet long at the crest, forming a reservoir with more than 16 billion gallons capacity, a supply tunnel through the East Oakland hills, a modern rapid sand filtration plant and a tunnel more than one and one-quarter miles in length which will have a cross-sectional area of about 30 square feet, sufficient to permit a flow of about 100 million gallons of water daily.
Two regulation control towers will be erected one at the reservoir inlet of the supply tunnel and the other at the inlet end of the diversion tunnel at the dam. The two circular reinforced concrete towers will have inlet valves located at varying depths to draw off water at any required rate and to permit the taking of water from any desired depth. The filter plant will be of the modern rapid sand type with a capacity of 12,000,000 gallons daily. The plant will consist of an aerator, mixing channels, sedimentation basins, filters and clear water basins.