ExxonMobil will pay out $12million to Montana and the US government as part of its oil spill settlement.
In 2011, the firm was responsible for oil, which spilled into Yellow Stone River, after its Silvertip pipeline burst.
The spill released 1,500 barrels of crude, which spread across 85 miles of river known for its world-class fisheries. Yellow Stone River is located about 150 miles downstream from the historic Yellowstone Park.
The cash will be used to restore the affected area and natural resources. Work will include stabilizing the riverbank and expanding fishing access.
However, the deal was criticised by some as being “a drop in the bucket”.
Exxon has previously said the spill response and clean-up costs would total $135million. It is thought to have settled compensation agreements with 95% of affected properties.
An Exxon spokesperson said: “We regret this spill happened and are committed to learning from it to prevent similar incidents from occurring in the future.”