An official says liquid manure leaked from an open-air lagoon at a western Michigan dairy farm, getting into a creek and spreading at least five miles.
TV station WXMI and The Grand Rapids Press report the Michigan Department of Environmental Quality began investigating the spill Friday after getting calls.
DEQ analyst Bruce Washburn says a stormwater system failure at Schaendorf dairy farm in Monterey Township resulted in the leak into the county drain system.
Washburn says a valve failed, causing the leak. It's not known how much spilled or how long the lagoon was leaking.
Washburn says farm staff stopped the flow Saturday morning. Manure has seeped into Bear Creek and reached the village of Hopkins.
Farm owner John Schaendorf tells WXMI crews are working to collect the manure.