A leak in the Keystone Pipeline has dumped around 210,000 gallons of oil in South Dakota, according to KSFY a Sioux Falls-based ABC News affiliate.

The leak was in an agricultural area of Marshall County. Currently, there is no sign that the oil has reached any waterways or water systems.

South Dakota’s Department of Environment and Natural Resources said that they were alerted about the leak from energy company TransCanada at 10:30 a.m. CST. TransCanada has shut down the pipeline and the leak was covered. Cleaning crews were contacted and are being dispatched to the area to address the spill.

“TransCanada crews safely shut down its Keystone pipeline at approximately 6 a.m. CST after a drop in pressure was detected in its operating system resulting from an oil leak that is under investigation. The estimated volume of the leak is approximately 5,000 barrels. The section of pipe along a right-of-way approximately 35 miles south of the Ludden pump station in Marshall County, South Dakota was completely isolated within 15 minutes and emergency response procedures were activated,” said TransCanada in a statement.

One barrel of oil is equal to 42 gallons.

TransCanada said it’s working with state regulators and the Pipelines and Hazardous Materials Safety Administration to assess the environmental impact of the spill.