Lake Superior, Known For Icy Waters, One Of The Fastest Warming Lakes In The World

By Erin Hassanzadeh, CBS Minnesota

December 4, 2023

MINNEAPOLIS — Lake Superior is the largest freshwater lake in the world — a sea known for its pristine cold water. But in a warming world, that's changing.

Before dawn, a crew boards the Blue Heron, an old fishing boat converted into a floating lab for research.

The Department of Natural Resources checks on the lake's fish populations to manage and support one of the state's great resources and pastimes. On a chilly Madison Lake in central Minnesota, they're electro-shocking those fish to collect samples. Experts then look at their size, age and diets to get a baseline, then compare it to winter.

Click here for the full story via CBS Minnesota

CBS Local Digital Media personalizes the global reach of CBS-owned and operated television and radio stations with a local perspective.