River is a tributary of the Big Horn
River, approximately 90 miles (140 km) long in northern Wyoming
in the United States
.The river was reportedly named for a white Buffalo
that had been seen on its banks.The river rises near Francs Peak
in the Absaroka Mountains in the southwest corner of the Big Horn Basin.
It joins with the Wood River and leaves the mountains near the town of Meeteetse, continuing through the southern parts of Park County
and Big Horn County
before flowing into the Big Horn River near Greybull.Much of the upper river is considered a top trout stream, hosting the best genetically pure populations of Yellowstone cutthroat trout in the region.