The Iowa Department of Natural Resources (DNR) report DNR staff were on site four miles west of Winterset responding to a spill at a hog confinement, Wednesday. The site owners, Waldo Farms of Nebraska, reported a release due to a plugged pipeline. That spill has stopped and did not reach a creek.

During the investigation, DNR field staff discovered a second, ongoing manure spill from a closed hog confinement. Manure storage at the closed facility was full, causing a small amount of manure-laden waters to overflow into a Cedar Creek tributary.

The DNR’s field tests showed elevated ammonia levels in the tributary, but normal levels downstream in Cedar Creek. The agency is requiring the owner to stop the release. Officials say the DNR will continue to monitor the cleanup and consider appropriate enforcement action.