Seems to be a lot of debris in the lake lately. I have been in communication with GA Power about it. They are concerned about it as well, because it jams up the flashboards at the dam. The are seeking solutions for the problem.
I found this solution that was installed in the Cumberland river in Kentucky:
http://www.kypride.org/photos/categories.php?cat_id=270
This could be installed up the rivers to prevent debris from entering the lake. I think this would be a huge improvement for our lake, and based on the pictures, it looks like it works very well.
I sent this to GA Power, and it was supposedly forwarded to the "higher-ups" for consideration. If anyone has any influence at GA Power, I think this would definitely something worth pursuing.