
Sumpter sits at the foot of the Elkhorn Mountains, serving as a focal point for the surrounding Sumpter Valley and the upper reaches of the Powder River. The landscape is a complex network of resource management and mountain transit, defined by historical water systems like the McEwen Valley Ditch and Hawley Ditch. The town's historical footprint is marked by the Blue Mountain Cem and a grid of streets including S Mill St.
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