Use the scale bar to estimate both the east-west and north south distances of the area served by the tva

Not having the map and can't tell you the scale. However, the TVA program ran along the Tennessee River and included 7 states in the program. The program built dams to stop flooding and brought electricity to the rural area. The states included: Tennessee, Kentucky, Virginia, North Carolina, Georgia, Alabama, and Mississippi. 

Its a whole new world