Existing Pump House with Sand Box in Foreground New Submersible Pumps Installed Lower Cavanee Pump Station Upgrade, San Jose Water Company, San Jose, CA Water Works Engineers designed a retro?t pump station for the San Jose Water Company’s (SJWC) Lower Cavanee Pump Station. The existing pump stationincluded a diversion dam, leaf screen, sand box, and pump house with a single 3500 gpm vertical turbine pump with a variable frequency drive. The goal of the project was to increase the capacity of the pump station to 5000 gpm, with the ability to reduce ?ows to as low as 500 gpm to take full advantage of SJWC’s water rights on Cavanee Creek. During preliminary design activities, three alternative pump station layouts were developed: 1. Submersible pumps inside existing sand box, 2. Vertical tur

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