Little Bighorn River mouth of the Little Bighorn canyon there is a gravel road maintained by Bighorn County. However, from the point at which the river flows out of the canyon (at about the Wyoming-Montana state line) the road continues upstream in the canyon for only about 2 miles. There are two (and sometimes three) unbridged stream fords. This portion of the road is unmaintained and is a two track road with tight turns. It is primitive, rough, ungraded, and littered with partially buried boulders. When it rains large puddles accumulate in low spots. It is impassible in the winter after snow accumulates
Little Bighorn River At Lodge Grass the Little Bighorn receives the waters of two tributaries, the largest being Lodge Grass Creek which flows west out of its own canyon system in the Bighorn Mountains, and Owl Creek flowing east and north from the Wolf Mountains. A few miles Before reaching Crow Agency, the Little Horn receives the flow of Reno Creek from the Wolf Mountains to the east. The famous Little Bighorn battle site is approximately five miles south of Crow Agency, on the eastern side of the river and is now the Little Bighorn Battlefield National Monument. In 1859, William F. Reynolds