It consists of four U.S. Forest Service Ranger District offices that manage four National Grasslands: All of these ranger districts were formerly part of the Custer National Forest based in Billings, Montana.

The Chief of the Forest Service created the DPG as a separate unit to help focus and better manage the issues and resources of the National Grasslands.

The Little Missouri National Grassland is administered from offices in Dickinson and Watford City.

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