Minnesota DNR Logs 202 Fish Kill Reports As Heat Wave Pushes Lake Temps To 88 Degrees

CBS Minnesota

July 21, 2026

The effects of Minnesota's prolonged heat wave are becoming impossible to miss with several reports of fish kills.

Along the shoreline of Peltier Lake in Centerville, hundreds of dead fish — mostly northern pike, along with a few bluegill and largemouth bass — are washing up after 10 days of 90-plus-degree temperatures. In northern Wisconsin's Lake Namakagon, dead muskies are surfacing.

Crews with the Minnesota Department of Natural Resources are measuring lake conditions after numerous fish kills.

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