I did most of my open water work at Ouachita. If you go to the dam, and tie up about in the middle, 20 feet or so off of the rocks, there is an underwater course setup. The depth ranges for most of the objects is 25 feet to 60 feet. There use to be a flock of pink flamingos 180 degrees from the dam at about 60 to 70 feet. The water gets real cold below 40 feet. There is a rope line that connect most of the underwater objects.