Try this site, it combines multiple info below the dam. Water Temp, flow,depth,precipitation. These are at Rowena, a half mile mile below the dam.The site takes a few minutes to learn to maneuver, but well worth it.
http://www.jonathonpalmer.net/cumberland.html
>>This link does not work. If you have one that dies try posting again
>>Thanks
Peter- Fishin.com