I dived in the lake when I rented a House Boat. BTW, nice vacation. Easy diving, but when you get to 25 ft depth you hit the cold water. Takes your breath away. During the summer you can dive without a wet suit. Very little fish and lots of rocks. OK visibility closer to the Dam, but it's bad after a rain storm. If you HAVE to dive fresh water, this is pretty good. Remember to use less weight than you do in salt water. Have FUN!