more oxygen rich layer and the cooler less oxygen rich lower layer. The thermocline is still in place but as you can see from the graphic at the left the water is on the verge of homogenizing into a uniform temperature distribution. This time is a prime Musky activity window, but the window is very short lived. It is very difficult to accurately predict the exact time of this water temperature circumstance. You'll just have to trust "luck" if you are trying to hit this period on the head. NOTE: One should also remember that, depending on the spring warm up, presummer and Imminent turnover are relatively the same water conditions.Finally, the water succumbs to the persistence of the changing season and "turnover" takes place. The thermocline barrier disappears as the water temperature becomes uniform throughout the body of water. This is typically a very slow period for Musky activity. The blending of the oxygen rich upper water and the oxygen poor lower water causes the overall oxygen level to be less than what the Musky are used to having. The Musky require time to adjust to the new oxygen level as well as to the fact that they are "stuck" with a uniform lower water temperature. As you might suspect, this is not a good time to catch Musky. Everybody of water will experience turnover on its own timetable so it is very hard to predict. If you plan to fish late in the season, you must "keep your finger on the pulse" of the body of water that you plan
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