DNR Biologist Weighs in on What Causes Summer Fish Kills

(Lewis) Iowa Department of Natural Resources Fisheries Biologist John Lorenzen is receiving reports of dead fish floating or washing up on shore in private ponds. Although concerning, Lorenzen says that most fish kills at this time of year occur naturally in shallow systems that are full of vegetation or algae.

The Iowa Department of Natural Resources Fisheries Biologist John Lorenzen is receiving reports of dead fish floating or washing up on shore in private ponds. Although concerning, Lorenzen says that most fish kills at this time of year happen naturally in shallow systems full of vegetation or algae.

The Iowa Department of Natural Resources Fisheries Biologist, John Lorenzen, is receiving reports of dead fish floating or washing up on the shore in private ponds. Although concerning, Lorenzen says that most fish kills at this time of year occur naturally in shallow systems that are full of vegetation or algae.