Tennessee Valley Authority - Nature's Power Harnessed (3) tv-pg Play video Select your TV provider to log in to have full access to videos Select your TV provider See all providers Don't see your TV provider? Learn more You can access this video on the free HISTORY® apps. *You must verify your TV provider towatch this video on the App Your Parental Control settings do not allow you to view this content. Tennessee Valley Authority - Nature's Power Harnessed (3 min) tv-pg In the early 1930's, every spring in the Tennessee River Valley brought on an onslaught of rain which totaled six feet each year. Roosevelt created the Tennessee Valley Authority to fix the problem.