The Upper Mississippi River is the section of the river that flows from its source at Lake Itasca in Minnesota to the confluence with the Missouri River near St. Louis, Missouri. This stretch of the river is approximately 1,300 miles long and is known for its diverse ecosystems, including wetlands, forests, and various wildlife habitats. The Upper Mississippi is an important waterway for transportation, recreation, and commerce. It supports a variety of activities such as fishing, boating, and birdwatching. The river is also home to several national wildlife refuges and parks, which help protect its natural resources and promote conservation efforts.