I believe a factor is when the weeds begin to die in the shallows from the lack of light or exposure to the sun, the amount of oxygen available becomes less. also, the amount of cover from predators become less as the weeds lay down. Deeper water and the pressure that comes with the deeper water contains more oxygen. This can be a contributing factor to fish moving deeper as winter draws on

JR’s Corner Facebook Post
“The fun early season stuff has started, the ice is starting to shift therefore a crack has opened from the reservation line to east of our resort. For everyone’s safety we are gonna hold off with foot traffic until the ice seems to stop shifting. Things do change quickly around here so stay tuned as we will let everyone know when we think it is safe to access the lake again”