Learn to Hunt
Report Your Harvest
Current Fishing Report
Taking Kids Fishing
Iowa's natural resources plates include the state bird and flower, pheasant, eagle, buck and a Brook trout. Support conservation in Iowa by buying a natural resource plate for your vehicle.
Natural Resource Plates
Experience Iowa's natural beauty and all the fun our state parks offer. Make your online reservation for state park cabins, camping sites, shelters and lodges.
Support conservation in Iowa by buying a natural resource plate for your vehicle.
Natural Resource Plates
Iowa DNR Customer Service
Mon - Fri, 8:00am - 4:30pm CST
Submit Online Inquiry
Information / Records Requests
Contact Information by County
Press/Media inquiries: PIO@dnr.iowa.gov
The end of summer is the worst time for underwater dwellers. When temperatures are high and oxygen levels are low, fish and other water critters are particularly vulnerable.
“We have received several reports of small summer fish kills at many lakes, ponds and a few streams throughout Iowa,” said Chris Larson, fisheries supervisor for the DNR in southwest Iowa. “We have also had some fish kills caused by pollutants.”
Seeing fish swim erratically and aquatic plants or algae dying are signs that a natural summer fish kill could occur. As aquatic plants die and decay, they remove dissolved oxygen from the water.
“These partial summer kills rarely kill all fish in the pond or lake and in a couple of years it will be back in balance,” said Larson. Usually large fish are more likely to die from low oxygen. However, some small fish can be affected.
In the hot days of summer, even small amounts of polluted runoff can cause problems for fish and other aquatic organisms.
“Historically we see more fish kills in August and September,” said Ken Hessenius, supervisor at DNR’s Spencer field office. “We’ve investigated four fish kills in the last two weeks. So we want to encourage farmers, pesticide and manure applicators, and homeowners to be extra careful when applying chemicals, fertilizers, and manure.”
Take these simple precautions to protect your waters:
Call the nearest DNR field office or the 24-hour spill line at 515-725-8694 as soon as possible to report a fish kill. Quick reporting can help DNR staff identify the cause of a fish kill and potentially stop a fish kill in progress.