Watt Island's potential as a dam site had been recognized since the early 1870s, when the U.S. Army Corps of Engineers built a dike at the tip of the island to improve flow in the main river channel.
 The Corps carried out dredging work at the island between 1911 and 1913 that deepened the main channel, and recommended the site (originally known as the "White Creek site" after a stream that joins the Tennessee a few miles upriver) for a dam in 1930.
 In 1936, the Tennessee Valley Authority assumed direction of the site as part of its unified strategy to build (and acquire) a series of dams along the Tennessee River to improve navigation and flood control, and aide in the region's economic development.
 TVA was given authorization to build a dam at Watt Island on March 16, 1939, and construction on Watts Bar Dam began on July 1, 1939.

The construction of Watts Bar Dam and its accompanying reservoir required the purchase of 54,600 acres (22,100 ha) of land and flowage rights, 7,304 acres (2,956 ha) of which were forested and had to be cleared.
 832 families, 17 cemeteries, and 121 miles (195 km) of roads were relocated.
 An earthen dike was built to protect downtown Kingston from the reservoir's backwaters, and minor adjustments were necessary to the riverfronts of Spring City, Harriman, Wheat, and Loudon.
 The community of Rhea Springs, located along the Piney River a few miles upstream from the river's mouth, was completely inundated.

The dam's original design called for the installation of three generators, but with the outbreak of World War II in 1941, energy demand in the region skyrocketed, and the design was modified to include a fourth and fifth generator.
 The dam was completed and the gates closed on January 1, 1942.
 The first generator went online February 11 of that year, followed by the second generator on April 6 and the third on July 23.
 The fourth generator went online March 12, 1944 and the fifth followed on April 24, 1944.
 The Army Corps of Engineers designed the dam's lock, which went into operation on February 16, 1942.

Watts Bar Lake was one of the water bodies affected by a massive release of fly ash in 2008 from the Kingston Fossil Plant coal fly ash slurry spill.
Watt Island's potential as a dam site had been recognized since the early 1870s, when the U.S. Army Corps of Engineers built a dike at the tip of the island to improve flow in the main river channel.  The Corps carried out dredging work at the island between 1911 and 1913 that deepened the main channel, and recommended the site (originally known as the "White Creek site" after a stream that joins the Tennessee a few miles upriver) for a dam in 1930.  In 1936, the Tennessee Valley Authority assumed direction of the site as part of its unified strategy to build (and acquire) a series of dams along the Tennessee River to improve navigation and flood control, and aide in the region's economic development.  TVA was given authorization to build a dam at Watt Island on March 16, 1939, and construction on Watts Bar Dam began on July 1, 1939.
The construction of Watts Bar Dam and its accompanying reservoir required the purchase of 54,600 acres (22,100 ha) of land and flowage rights, 7,304 acres (2,956 ha) of which were forested and had to be cleared.  832 families, 17 cemeteries, and 121 miles (195 km) of roads were relocated.  An earthen dike was built to protect downtown Kingston from the reservoir's backwaters, and minor adjustments were necessary to the riverfronts of Spring City, Harriman, Wheat, and Loudon.  The community of Rhea Springs, located along the Piney River a few miles upstream from the river's mouth, was completely inundated.
The dam's original design called for the installation of three generators, but with the outbreak of World War II in 1941, energy demand in the region skyrocketed, and the design was modified to include a fourth and fifth generator.  The dam was completed and the gates closed on January 1, 1942.  The first generator went online February 11 of that year, followed by the second generator on April 6 and the third on July 23.  The fourth generator went online March 12, 1944 and the fifth followed on April 24, 1944.  The Army Corps of Engineers designed the dam's lock, which went into operation on February 16, 1942.
Watts Bar Lake was one of the water bodies affected by a massive release of fly ash in 2008 from the Kingston Fossil Plant coal fly ash slurry spill.
Watts Bar Dam