Introduction  |    The Assiniboine   |  The Souris    |   The Little Saskatchewan    |   The Boundary Trail    |    Here & There Introduction Drainage in the  Southwest Corner of Manitoba involves four rivers and their many tributaries.  The Assiniboine enters Manitoba in the Swan River area and flows north of Virden, through Brandon and southwest into Spruce Woods Provincial Park, The Souris River flows into Canada south of Melita and joins the Assiniboine just north of Wawanesa. The Little Saslatchewan flows out of Riding Mountain National Park and joins the Assinboine just west of Brandon. The Pembina River is small stream that rises south of Boissevain and takes an eastward path in a separate drainage system that connects with the Red River south of Emerson. Although we will focus on the rivers, numerous tributaries also provided some interesting crossings.