<P> The Assiniboine River ( / əˈsɪnɪbɔɪn / ) is a 1,070 - kilometre ( 660 mi ) river that runs through the prairies of Western Canada in Saskatchewan and Manitoba . It is a tributary of the Red River . The Assiniboine is a typical meandering river with a single main channel embanked within a flat , shallow valley in some places and a steep valley in others . Its main tributaries are the Qu'Appelle , Souris and Whitesand Rivers . For early history and exploration see Assiniboine River fur trade . </P>
where is the assiniboine river located in canada
the prairies of Western Canada Saskatchewan and Manitoba