The Mississippi River Basin is a large watershed that drains water from a vast area of the central United States. It covers parts of 31 states and two Canadian provinces, making it one of the largest river basins in North America. The basin includes the main stem of the Mississippi River and its many tributaries, such as the Missouri River and the Ohio River. This basin plays a crucial role in the ecology and economy of the region. It supports diverse habitats and wildlife, while also providing water for agriculture, industry, and urban areas. The basin's health is vital for maintaining the balance of ecosystems and the livelihoods of millions of people.