Arm River (Saskatchewan)

Arm River
The Red River drainage basin, with the Qu'Appelle River highlighted
Location in Saskatchewan Show map of Saskatchewan Arm River (Saskatchewan) (Canada) Show map of Canada
Location
Country	Canada
Provinces	Saskatchewan
Physical characteristics
Source	Allan Hills
Mouth	Last Mountain Lake
• location	at Little Arm Bay
• coordinates	50°47′06″N 105°02′30″W / 50.7849°N 105.0416°W / 50.7849; -105.0416
• elevation	490 m (1,610 ft)
Basin features
River system	Red River drainage basin

Arm River is a river^[1] in the Canadian province of Saskatchewan. It is located in the south central part of the province in a region called the Prairie Pothole Region of North America, which extends throughout three Canadian provinces and five U.S. states. It is also within Palliser's Triangle and the Great Plains ecoregion.^[2]

The river is a main tributary of Last Mountain Lake and is part of the Last Mountain Lake Sub-basin of the Upper Qu'Appelle Watershed.^[3] Last Mountain Creek drains Last Mountain Lake into the Qu'Appelle River near Craven.