Polymictic lake

Lake zones
	Littoral zone
	Limnetic zone
	Profundal zone
	Benthic zone
Lake stratification
	Epilimnion
	Metalimnion
	Hypolimnion
	Destratification
Lake types
	Holomictic lake
	Monomictic lake
	Dimictic lake
	Polymictic lake
	Meromictic lake
	Amictic lake
Aquatic ecosystems
Wild fisheries

Polymictic lakes are holomictic lakes that are too shallow to develop thermal stratification; thus, their waters can mix from top to bottom throughout the ice-free period. Polymictic lakes can be divided into cold polymictic lakes (i.e., those that are ice-covered in winter), and warm polymictic lakes (i.e., polymictic lakes in regions where ice-cover does not develop in winter).

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Wikipedia