Bighorn River river passes through Yellowtail Dam and Afterbay Dam. The river turns to the northeast and enters the Great Plains. At Hardin the river is joined by the Little Bighorn River. Approximately downriver from the Little Bighorn, in Big Horn County, the Bighorn empties into the Yellowstone. The Bighorn River has also been known as the Great Horn River, Le Corne and Iisaxpúatahcheeaashisee in the Apsáalooke language which translates to English as "Large Bighorn Sheep River". Bighorn River The Bighorn River is a tributary of the Yellowstone, approximately long, in the states of Wyoming and Montana in the western United States.
Little Bighorn River The Lakota Sioux, who began to contest control of this area with the Crow in the 1840s to 1860s as they pushed westward, continued to call the river the "Greasy Grass". Native Americans called the river the Greasy Grass before the Battle of the Little Big Horn in 1876, and Lakota people still commonly refer to the Battle of the Little Bighorn as the Battle of the Greasy Grass. In historical references in Wikipedia articles, the Battle of the Little Bighorn is also referred to as the Battle of the Greasy Grass, as it is in the discussions of the