The area of the Midwest called the Great Plains is a flat plateau that lies between the western Rocky Mountains the eastern Appalachian mountains. The elevation starts at 6,000 feet above sea level on the west and slopes down to 1,000 feet above sea level on the east.
The Central Lowlands lie east of the Great Plains, west of the Mississippi River and south of the Great Lakes. This area has an elevation between 300 and 2,000 feet above sea level. Taken together, the Great Plains and the Central Lowlands contain most of the agricultural areas of the country and some of the most fertile soil.
The Mississippi River marks the eastern boundary of the plateau that contains the Central Lowlands and Great Plains. Most of the rivers in the Midwest drain into the Mississippi River. This river has its origin in Minnesota and flows south into the Gulf of Mexico, a journey of more than 2,000 miles. Furthermore, it is one of the largest and most important river systems in the world. The Great Lakes lie to the north of the Central Lowlands and the Midwest.Learn more about The Midwest