U.S. Department of the Interior. The Department of the Interior manages public lands and minerals, national parks, and wildlife refuges and upholds Federal trust responsibilities to Indian tribes and Native Alaskans. Additionally, Interior is responsible for endangered species conservation and other environmental conservation efforts.
Acquired November 13, 2002, this false-color image shows part of the Ouachita Mountains in southeastern Oklahoma. Acquired November 13, 2002, this false-color image shows part of the Ouachita Mountains in southeastern Oklahoma.
Climate of Oklahoma. Overview. The Ouachita Mountains dominate southeast Oklahoma, with peaks rising as much as 2,000 feet above their base. Extreme east-central Oklahoma features the mountains of the Arkansas River Valley, rising several hundred feet above the plains. Extreme northeastern counties are part of the Ozark Plateau, marked by steep, rocky river valleys between large areas of hills and rolling plains.