These lakes get pretty warm in the Summer. It's only getting in the mid-forties at night now, so I wonder if that's cold enough to get things mixing. My local lakes all have a lot of plant debris in them now...
A while back we weren't fishing because it was 70 on top, so the longer nights and cooler temps already have it cooling. If the top some feet is 58 as in the above example, and it get colder at night and some depth of the top gets below 58, it will sink through. So the more things that affect that cooling are in place, the more rapidly it will occur. And of course more wind will cause more mixing and cooling if the air is cooler than the water. Tree or mountain shading will reduce solar heating and cause it to cool quicker.
Damn! I wanted to blame my measly catch rate on something besides my inept ability. Go figure...
I fished the C&R lake not too far north of there Saturday. It was about as clear as it ever gets in that lake. Caught some fish. Surface temp was 58F.
