Hales Bar Dam - Location and Capacity

Location and Capacity

Hales Bar Dam was located along the Tennessee River at just over 431 miles (694 km) above the river's mouth, near the southwest end of the Tennessee River Gorge. The dam's reservoir extended up the river through the gorge all the way to Chattanooga, and had 162 miles (261 km) of shoreline. Before the construction of Hales Bar, this was a particularly unpredictable and dangerous section of the river, with numerous navigation obstacles. Downstream from the dam site, the river begins to steady as it enters the hills and flatlands near Guntersville.

Hales Bar Dam was 113 feet (34 m) high and 2,315 feet (706 m) long, and its spillway had a combined discharge capacity of 224,000 cubic feet per second (6,300 m3/s). After improvements by TVA in 1949, the dam had a generating capacity of 99,700 kilowatts. The dam's lock, which went into operation on November 1, 1913, was 60 feet (18 m) by 260 feet (79 m), and its 41-foot (12 m) lift was the highest in the world at that time.

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