Evidence of this year’s harsh winter is washing up along some shorelines in southern Minnesota. While dead and dying fish washing ashore can be discouraging to see it’s the result of a natural process called “winterkill.”

“Every year we see a depletion of oxygen under the ice but the rapid change in events from January to February some of our shallow lakes in Minnesota started to really see a drop in dissolved oxygen.”

The DNR’s Jack Lauer says if you do see a large number of dead or struggling fish to contact your local DNR office right away.