Capacity
Watauga Dam is an earth-and-rock dam 318 feet (97 m) high and 900 feet (270 m) long, and has a generating capacity of 57,600 kilowatts. The dam's fixed-crest morning glory spillway has a maximum discharge of 73,200 cubic feet per second (2,070 m3/s). Watauga Lake has 106 miles (171 km) of shoreline and a storage capacity of 677,000 acre·ft (835,000 dam3), of which 152,829 acre·ft (188,512 dam3) is reserved for flood control. The reservoir's operating levels vary by about 9 feet (2.7 m) in a typical year.
Watauga's powerhouse is located nearly a mile downstream from the dam, and is connected to the reservoir intake by a 3,700-foot (1,100 m) tunnel. Just above the powerhouse, the tunnel splits into two steel conduits that carry the water to a valve house just above the turbines.
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