Facilities Description
Savage Rapids Dam consisted of a 16-bay spillway section and a hydraulic-driven pumping plant section at the right abutment. The maximum height of the spillway section is about 39 feet (12 m). The first seven bays at the right end of the dam were multiple arches with buttresses on 25-foot (7.6 m) centers. The remaining nine bays have a concrete gravity section below the gates. Spillway control was originally provided by 16 wooden-faced radial gates, each 23 feet (7.0 m) wide and 10 feet (3.0 m) high. Later, radial gates were replaced with metal stoplogs, and one double-gated river outlet with a capacity of 6,000 cubic feet per second (170 m3/s) was installed at the center of the dam. During the irrigation season, the stoplogs were used to raise the reservoir's elevation 11 feet (3.4 m).
Prior to the construction of the new pumping system, the main pumping plant at the diversion dam consisted of two hydraucone turbine units that operated at a 29-foot (8.8 m) head. One turbine drove a centrifugal pump with a capacity of 75 cubic feet per second (2.1 m3/s) against a 90-foot (27 m) head, and supplied water to the South Highline Canal. The other turbine drove two pumps connected in series, with a capacity of 50 cubic feet per second (1.4 m3/s) against a head of 150 feet (46 m), and supplies water to the Tokay Canal.
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