CEDAR RAPIDS – A break in a 16-inch water main led to a fish kill over about one mile of McCloud Run in Cedar Rapids on Monday, July 31, resulting in the death of more than 2,000 fish – mostly trout, according to a news release Tuesday, Aug. 1 from the Iowa DNR.
The break occurred when a valve failed near McCloud Bridge shortly after 2 p.m. Monday, causing treated drinking water to gush into the stream. Chloramine, which is used to disinfect water, is harmful to fish and other aquatic organisms.
DNR staff were on site Monday evening and Tuesday to investigate. Fisheries staff counted approximately 1,260 trout, 673 white suckers and 300 other dead fish.
The DNR will take appropriate enforcement action, including asking for fish restitution, the agency said in a the release.