Thanks for your help and patience Ted. Obviously I have a lot more research to do.

The bank on the dam away from the lake wasn't nearly as rutted as the lake side was. Last April it was nothing but nearly foot tall dandelions. We couldn't even see if there was grass or not. With water and some fertilizer the bahia eventually filled in all the numerous bare spots. Nature always amazes me with her ability to bounce back. We had some strips of bermuda that I thought might need resodding. With some effort they bounced back beautifully. This is not a bad neighborhood by any means. These areas were just terribly neglected for some reason. Bahia is a tough, ugly grass, but it does need some care.