Poplar River (Montana–Saskatchewan)
The Poplar River
|Basin countries||Roosevelt and Daniels County, Montana|
|Mouth elevation||1,942 feet (592 m)|
|River system||Missouri River|
It rises in several forks on the plains of southern Saskatchewan. The western fork rises near Killdeer, Saskatchewan and flows southeast, into northeastern Montana, past Richland and across Daniels County. The middle fork rises northwest of Rockglen, Saskatchewan and flows southeast, into northeastern Montana, and passes west of Scobey. The two forks unite in the northern Fort Peck Indian Reservation. The combined fork flows southeast, then south-southwest, and joins the Missouri River near Poplar.
The Poplar River has also been known as: Lost Child Creek and Middle Fork Poplar River.