Construction of Watts Bar Dam began in 1939. It was completed in January 1942, three weeks after Pearl Harbor, and provided urgently needed electricity for the war effort.
The dam is 112 feet high and stretches 2,960 feet across the Tennessee River.
Watts Bar Reservoir has 722 miles of shoreline and over 39,090 acres of water surface.
The reservoir has a flood-storage capacity of 379,000 acre-feet.
To maintain the water depth required for navigation, the minimum winter elevation for Watts Bar Reservoir is 735 feet. The typical summer operating range is between 740 and 741 feet.
In addition to forming a navigable 72-mile-long reservoir on the Tennessee River, Watts Bar also creates a slack-water channel for navigation more than 20 miles up the Clinch River and 12 miles up the Emory River.
Watts Bar has one 60- by 360-foot lock that lifts and lowers barges as much as 70 feet to Chickamauga Reservoir. The lock handles more than a million tons of cargo a year.
The hydroelectric power plant at Watts Bar consists of five generating units.
There is never a bad time to fish anywhere. Just times when the fish bite better. For Watts Bar Lake the best time to fish is as follows:
Largemouth Bass - April through June in day. July through August at night. Smallmouth Bass - October through December. Bluegill (bream) - Summer. Willowfly - July. Crappie - Spring and fall. Catfish - June, July, August. June while spawning. White Bass - August, September. Striped bass (rockfish) - October, November, Moon Island. Thief Neck Island and below dam in spring and fall. Sauger - Below dam November through February.