According to the Grolier Society, it was the great American depression era and President Franklin D. Roosevelt was engaged in a host of solutions - the most famous of which was the New Deal. But really the New Deal was a conglomerate of policies and programs all making up the total package.
"The objectives stipulated in the act are: Improvement of the navigability of the Tennessee River and the provision for flood control in the Tennessee and Mississippi Rivers; provision for the agricultural and industrial development of the Tennessee Valley; provision for the national defense; and the development and distribution of incidental hydroelectric power to the public."
The rest of the article goes on to tell what the TVA was involved in between its inception and 1938. The first statement says: "control of the water resources of the region implies control of water on land, with consequent checking of erosion, improvement of agricultural conditions, retarded flood runoff, and increased groundwater storage." The TVA was also involved in two Nitrate plants, massive tree reseeding operations, malarial research, the study of occupational diseases, development of freight terminals, the installation of hydroelectric plants, the planned building of nine dams, experiments in developing large cooler containers and various ag pursuits including improved cottonseed oil production, high quality sorghum syrup, better flax fibers for cotton textile equipment, electrical curing of hay and dehydration of sweet potatoes.
They even dabbled in public water supply improvements like the single water supply for Wilder, TN in 1942. (Shown below)
The operation of a governmental entity under private corporation practices did seem to provide a learning curve, though. It wasn't long before the TVA was being federally investigated over allegations of its business practices and accounting, and its director, Arthur E. Morgan, was dismissed by President Roosevelt for "contumacy" when he refused to answer questions about a land deal involving a Senator. Anyway, I find the water issues related to the TVA far more interesting.
I had to chuckle a bit when I discovered the editors for the 1939 Annual to be McDannald and McDonnell, and other contributing editors included McGrail, McKinney, McMahon, McMahon and McNinch. It's surprising they didn't get the company name changed to McGrolier.