What Is Fall Lake Turnover? A Guide for Freshwater Anglers

In many deep temperate lakes, warmer surface water and colder deeper water form separate layers during summer. As autumn temperatures fall and winds increase, those layers can mix, redistributing oxygen and nutrients throughout the lake.

This seasonal process is called fall turnover. Its timing varies by lake depth, weather and local climate, and some shallow lakes may not stratify in the first place.

For anglers, changing water conditions can alter where fish are found. Rather than assuming every lake is turning over at once, monitor water temperature, clarity, baitfish and local conditions, and adapt fishing depth and location accordingly.

This is an evergreen fishing explainer, not a report of a new event. Further reading: In-Fisherman: The Truth About Fall Turnover.