| Poplar River (Lost River) | |
|---|---|
| Origin | Minnesota |
| Basin countries | United States |
The Poplar River is a 58.4-mile-long (94.0 km)[1] tributary of the Lost River of western Minnesota in the United States. Via the Lost River, the Clearwater River, the Red Lake River, the Red River of the North, Lake Winnipeg, and the Nelson River, it is part of the Hudson Bay watershed.