Wis. DNR: Heat, low oxygen in water causing fish kills
Hot, dry weather has prompted a spate of fish kills in the southern part of the state, the Wisconsin Department of Natural Resources reported.
The DNR reports a span of hot weather combined with a lack of precipitation has created low water and low oxygen levels in area waterways. The agency reports the lack of oxygen can be worsened by aquatic plant respiration, sometimes lowering oxygen to levels that are lethal to fish.
Two recent fish kills have been reported in southern Wisconsin, including parts of the Rock River in Dodge County, including an area upstream of the Horicon Dam in Dodge County, and an area south of Lake Sinissippi near Hustisford where about 2,000 fish were found dead, the DNR reported
The kills were to walleyes, channel catfish and carp.
Two other kills were reported at Beckman Mill pond in Green County, and part of the Yahara River south of Lake Kegonsa in Dane County. Officials are still investigating those kills.
The DNR is urging people who see large numbers of dead fish in local lakes, streams and rivers to call the DNR Tip Line at 1-800-TIP-WDNR.