Interior Highlands

Consisting of the Ozark Plateaus and the Ouachita Province, the Interior Highlands of the southern forest are located in Oklahoma and Arkansas. To the north, the Ozark Plateaus rise 2200 feet above sea level. Regional streams dissect the plateaus creating flatland prairies between the rivers (Walker and Oswald 2000).

Interior Highlands

The Arkansas River separates the Ozark Plateaus from the Ouachita Province in the southern part of the Interior Highlands. The topography of the area is similar to the Ridge and Valley Province. Elevations range from below 1000 feet to 2600 feet near the Oklahoma border in the West (Walker and Oswald 2000).

The U. S. Geological Survey website has more information related to the Interior Highlands.