Thief River

Thief River
Mouth of the Thief River
Native nameGimood-akiwi ziibi (Ojibwe)
Location
CountryUnited States
StateMinnesota
CountiesPennington and Marshall counties
Physical characteristics
Source 
  locationThief Lake, Marshall County, Minnesota
  coordinates48°29′18″N 95°57′00″W / 48.488305°N 95.9500073°W / 48.488305; -95.9500073
Mouth 
  location
Thief River Falls, Pennington County, Minnesota
  coordinates
48°07′27″N 96°10′10″W / 48.1243°N 96.1695°W / 48.1243; -96.1695
Length40.3 mi-long (64.9 km)
Basin features
River systemHudson Bay

The Thief River is a 40.3-mile-long (64.9 km) tributary of the Red Lake River in northwestern Minnesota in the United States. Via the Red Lake River, the Red River of the North, Lake Winnipeg and the Nelson River, it is part of the watershed of Hudson Bay.