The Antler River[1] is located in the Prairie Pothole Region of North America's Great Plains[3] in south-eastern Saskatchewan and south-western Manitoba in Canada in an area known as Palliser's Triangle.

Its source is in Saskatchewan's Moose Mountain Upland and it is a major tributary of the Souris River.

[6] The river starts on the eastern side of Moose Mountain Upland, north-east of the lakes of Kenosee[7] and White Bear (Carlyle).

[9] The Antler River is located in the Great Plains ecoregion of North America.

[13] Media related to Antler River at Wikimedia Commons Canada portal