The state is covered by mountains, river valleys, forests, lakes, and bayous in addition to the cities of Arkansas. Crowley's Ridge is a geological anomaly rising above the surrounding lowlands of the Mississippi embayment.The Buffalo National River, as it flows through The Ozarks to the White River, Oklahoma as the McClellan–Kerr Arkansas River Navigation System. Through south Arkansas, the Ouachita River and the Saline River run roughly parallel to the Arkansas, and the major rivers in northeast Arkansas are the White River and St. Francis River. The Red River runs through the southwest corner of the state.
Arkansas has many manmade lakes across the state, many are the basis for state parks, wildlife manage ment areas, or other recreation.
The Ozarks is a broad term for many mountainous counties in northwest Arkansas. This region is usually referred to the Ozarks because the term Northwest Arkansas is the colloquial name for the Fayetteville–Springdale–Rogers Metropolitan Area, including Benton, Madison, Washington counties in Arkansas and McDonald County, Missouri.[5] The Ozark, however, span from the Arkansas River in the south through north central Arkansas. The Boston Mountains subset contain highest peaks in the Ozarks.[6]