Dunn County pipeline leak contaminates creek, stock pond
DUNN COUNTY, N.D. — A pipeline in Dunn County leaked produced water into a creek that empties into the Knife River, but no impacts were immediately detected in the river, the state Department of Environmental Quality said Wednesday, Oct. 2.
Produced water is a mixture of saltwater and oil that can contain drilling chemicals. An estimated 500 barrels, or 21,000 gallons, leaked from a pipeline that's part of a gathering system operated by Marathon Oil.
The incident occurred about 1 ½ miles northeast of Manning on Tuesday and was reported the same day, according to Environmental Quality. The cause isn't known.
The produced water impacted a small creek and stock pond within pastureland. The creek discharges into the Knife River about a mile downstream of the stock pond. State officials are inspecting the site and will continue to monitor the investigation and remediation.