MN DNR
The Minnesota Department of Natural Resources encourages Minnesotans to contact the state duty officer if they see evidence of a fish die-off in a lake, river or stream. Fish die-offs can result from a variety of natural and human causes.
To report fish die-offs, people should call the Minnesota duty officer at 651‐649‐5451 or 800‐422‐0798 (the duty officer line is staffed 24 hours per day, seven days a week). An early report facilitates timely water and fish sampling and other response actions, if needed. It’s especially helpful to know what sizes and types of fish people see in a fish die-off.
More information on fish die-offs is available on the Minnesota DNR website (mndnr.gov/fisheries/fishkills.html).
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