Who owns the Mississippi river?

No individual person or entity "owns" the Mississippi River. It is a natural resource that flows through multiple states within the United States and is considered part of the public trust. The federal government, through various agencies such as the U.S. Army Corps of Engineers and the Environmental Protection Agency, has the primary responsibility for regulating and managing the river's navigation, flood control, water quality, and other related issues. However, the ownership of land adjacent to the river, as well as the use of its water and resources, can vary depending on specific locations and may involve a combination of private ownership, state jurisdiction, and federal oversight.