Powder River
The Powder River is a a tributary of the Yellowstone River in the western United States.It rises in three forks in eastern Wyoming. The North and Middle forks rise along the eastern slope of the Bighorn Mountains. The South Fork rises on the north slope of Garfield Peak in the Granite Mountains west of Casper. The three forks meet on the foothills east of the Bighorns near the town of Kaycee. The Powder then flows northward, east of the Bighorns, and into Montana, and is joined by the Little Powder near the town of Broadus, and joins the Yellowstone approximately fifty miles downriver from Miles City, Montana.
The plaeau area of eastern Wyoming and southeastern Montana through which the river runs has historically been called the Powder River Country.