Powder River, River system in Wyoming and Montana, United States.
The Powder River is a river system that flows 375 miles from northeastern Wyoming to southeastern Montana. It passes through prairie landscapes before joining the Yellowstone River.
Sioux, Cheyenne, and Crow peoples used the Powder River region as hunting grounds before European settlement arrived in the 1800s. European expansion in that century transformed the area and its use.
The name comes from indigenous peoples' observation of fine sediment that winds lift from the riverbed into the air. Visitors can still see this cloudy water today, which gives the river its distinctive appearance.
The river passes through only a few towns, so it helps to research access points before visiting. The water carries heavy sediment, so water shoes are useful if you plan to wade.
Local residents humorously describe the river as a mile wide and an inch deep, emphasizing its shallow nature. This expression captures how expansive the water surface looks while the actual depth remains remarkably shallow.
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