Late Feb. Key Time for Fish Survival
February 21, 2022

Simonson Photo
Walleyes do not tolerate low levels of dissolved oxygen well. In late February, lakes across the region typically have the least amount of dissolved oxygen in their waters and are most prone to experiencing a winterkill event.
The final weeks of February are a crucial time for fish under the ice across the northern plains. It's at this point in the winter when dissolved oxygen levels are typically at their lowest and the risk for winterkill on smaller bodies of water increases. With heavy snow cover on lakes throughout the eastern half of North Dakota for much of the winter, agents of the North Dakota Game & Fi...
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