It's that time of year. Time for someone like me to post a question about something that nobody can answer. I will try to provide as much detail as I can to help formulate educated opinions.
I plan to fish a lake in Todd County sometime in Oct. to try to pick up a trophy pike. I know lake turnover is looming and I would rather avoid that period of time, as fishing, as I have been lead to beleive, will be much tougher. Here is what I can tell you about my lake.
Sentinel Class Lake - Deep and Cold. 243 Acres 66 literal acres - areas 15 feet or less 88 feet deep in the max 17.5 water clarity 13-16 foot max plant growth depth.
Any pointers on when I can expect turnover if the weather is "normal". I do not have the ability to access the lake to take temps daily or watch for particulate in the water to go up or down.
I would think in your area the turnover has already started. It typically starts at the end of September or beginning of October. When surface temps start getting around 50 degrees, the more dense water starts to displace the oxegen depleted water and forces it up to the surface. By the time the surface temps reach 40 degrees, it'll be all over.
Even eminent chartered accountants are known, in their capacity as fishermen, blissfully to ignore differences between seven and ten inches, half a pound and two pounds, three fish and a dozen fish. ~ William Sherwood Fox, Silken Lines and Silver Hooks, 1954