 The other tributaries include the Moose Jaw River, Wascana Creek, Loon Creek, Jumping Deer Creek, Pheasant Creek, Kaposvar Creek and Lanigan Creek.93% of the land in the Qu'Appelle Rivershed is used for agriculture purposes.Last Mountain Lake, also known as Long Lake, the largest natural lake in southern Saskatchewan (Lake Diefenbaker is larger but is a reservoir behind the Gardiner and Qu'Appelle River Dams), drains into the Qu'Appelle near the town of Craven, through Lanigan Creek.