Saskatchewan is ( approximately ) a quadrilateral ( four-sided object ) bounded on the west by Alberta , on the north by the Northwest Territories , on the east by Manitoba , and on the south by the American states of Montana and North Dakota . Saskatchewan is a prairie province in Canada , which has an area of 588276 k. Saskatchewan is bounded on the west by Alberta , on the north by the Northwest Territories , on the east by Manitoba , and on the south by the states of Montana and North Dakota .