Crude oil and produced water leaked into Lake Texoma on Thursday.
Godfrey Oil Properties reported to the Oklahoma Corporation Commission that it lost about 4,200 gallons of crude oil and 1,680 gallons of produced water. Both substances leaked off the site and into Elm Creek, which is about a half mile from Lake Texoma.
Oil and produced water leaked into Lake Texoma, and Godfrey hired Dillon Environmental to clean up the spill.
According to the Oklahoma Corporation Commission, containment booms were in place and the contractor was working to clean up floating and freestanding oil by 2 p.m. Thursday.
The Army Corps of Engineers and the U.S. Environmental Protection agency were notified of the spill.
The Oklahoma Corporation Commission said that the cause of the spill has not been determined. Godfrey has until Nov. 21 to complete the necessary cleanup work.