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The Map of Rivers That Flow into the Mississippi River The Mississippi River, one of the most iconic rivers in the United States, is not just a single waterway but a vast network that connects with numerous rivers from various states. It stretches over 2,300 miles from its source in Minnesota to its mouth in the Gulf of Mexico, draining water from 31 states and two Canadian provinces. The Mississippi River’s watershed is an intricate system of tributaries that flow into the river, contributing to its immense size and power. Major Tributaries of the Mississippi River The Mississippi is fed by several major rivers that bring water from a variety of geographical regions. One of the most significant tributaries is the Missouri River , which flows from the Rocky Mountains in western North America. The Missouri River merges with the Mississippi near St. Louis, Missouri, adding a considerable amount of water to the Mississippi’s flow. Another major tributary is the Ohio River , which flows...