WAUMANDEE, Wis. — Storm run-off, heavily laden with manure, killed hundreds of trout and other fish in a tributary to the Mississippi River. The fishkill was on a one-mile stretch of Danuser Creek. It was believed the contamination had diluted to non-lethal levels before emptying into the Mississippi 12 miles downstream near Fountain City. An angler discovered the fishkill and called a game warden. An investigation found a drainage point at a farm where manure was spread twice in the past week. The farm was not named but was categorized in documents as “a concentrated animal feeding operation” with more than 1,000 animal units. Under investigation was whether manure-spreading regulations were violated.
