The Great Plains of North America slope east from the Rockies and extend to the edge of the Canadian Shield and the western edges of the Appalachians. The land is generally smooth with large treeless areas and shallow river valleys. Minor hills and mountains are found in the Ozark Plateau of Missouri, and in the Boston Mountains and Ouachita Mountains of northwestern Arkansas and eastern Oklahoma. Sandhills and buttes cover parts of the north central U.S. in Nebraska.
Rivers: Major rivers of North America
The Rocky Mountains, about 3,000 miles in length, extend from the U.S State of New Mexico up through the western United States and on into the northernmost reaches of Canada's British Columbia. Major mountain ranges include...
The highest point in the Rockies is Mt. Elbert, located 10 miles southwest of Leadville, Colorado. It stands at 14,433 ft (4,399 meters).
Mountains of south-central Alaska that extend from the Alaska Peninsula to the border of the Yukon Territory, Canada. The highest point in North America, Mt. McKinley, 20,320 ft. (6,194 m) is located here.
The Appalachians, about 1,500 miles in length, extend from central Alabama in the U.S. up through the New England states and the Canadian provinces of New Brunswick, Newfoundland and Quebec.
Significant Appalachian ranges include:
The highest point is Mt. Mitchell in North Carolina at 6,684 ft (2,037 m)
Mountains of northern Alaska. Highest point: Mt. Isto, 9,060 ft. (2,760 m)
This mountain range of eastern California is about 400 miles in length. The highest point isMt. Whitney at 14,494 ft. (4,418 meters).