Iowa Sierra Club, December 2, 2010
MEDIA CONTACT: Rick Martens at Manchester DNR field office
BERNARD--Surface-applied manure from Bernard County Dairy on a partially frozen 40-acre field west of Bernard resulted in runoff that killed more than 2,000 fish in an unnamed stream following rains on Monday.
DNR investigation revealed that factors contributing to the manure runoff were minimal corn stock residue, field slope, inadequate separation distances, limited manure incorporation and not checking the area for recent drainage improvements. The manure applicator was Gansen Pumping, Inc. of Zwingle.
Dead fish included minnows, shiners, chubs, suckers, dace and a few sunfish. No game fish were killed.
"This incident highlights the need for manure application planning and for choosing low risk areas for application," said DNR Environmental Specialist Rick Martens.
The DNR will continue to monitor the situation and consider enforcement action.