Did a dive on Monona tonight looking for some lost equipment. No thermocline at this point but it is starting. At 15' temp was 64°F, at 30' it was 57°F and at 57' it was 55°F. The first 20 FOW was heavy in algae, the deeper the water the less the algae. Even then clarity was about 6' max, had to use a dive light the entire time. Only fish seen was a dead, decaying bluegill. Rick