- Lake Superior is the largest freshwater lake in the world by surface area and the third-largest by volume, holding 10% of the world’s surface fresh water. Located in central North America, it is the northernmost and westernmost of the Great Lakes of North America, straddling the Canada–United States border with the Canadian province of Ontario to the north and east and the U.S. states of Minnesota to the west and Wisconsin and Michigan to the south. It drains into Lake Huron via St. Marys River, then through the lower Great Lakes to the St. Lawrence River and ultimately the Atlantic Ocean.
- Island Wildlife Area Unit (wdfw.wa.gov)
The Island Unit is accessible only by boat. A boat launch at the WDFW Skagit Headquarters Unit provides access to the unit and portions of the Skagit River estuary via Freshwater Slough. The unit is a popular waterfowl hunting area. Other recreation includes fishing, wildlife observation, and hiking. A mixture of natural and agricultural crops are grown on the Island Unit to enhance food resources for wintering waterfowl and provide improved hunting opportunity.