What are the major landforms in great plains?

* The Missouri Plateau: This is the largest landform region in the Great Plains. It covers parts of Montana, North Dakota, South Dakota, Wyoming, Nebraska, and Colorado. The Missouri Plateau is characterized by rolling hills and plateaus, with elevations ranging from 2,000 to 6,000 feet.

* The Black Hills: This is a mountain range located in western South Dakota and northeastern Wyoming. The Black Hills are part of the Rocky Mountains, and they are the highest point in the Great Plains. The highest peak in the Black Hills is Black Elk Peak, which is 7,242 feet high.

* The Sand Hills: This is a region of sand dunes located in western Nebraska. The Sand Hills cover an area of about 20,000 square miles, and they are the largest sand dune region in the Western Hemisphere. The dunes in the Sand Hills range in height from a few feet to over 300 feet.

* The Ogallala Aquifer: This is a major aquifer located beneath the Great Plains. The Ogallala Aquifer is one of the largest aquifers in the world, and it provides water for drinking, irrigation, and industrial use.

* The Great Plains Lowlands: This is a region of low-lying land located in eastern Kansas, Oklahoma, and Texas. The Great Plains Lowlands are characterized by gently rolling hills and prairies.