The Lake Superior National Estuarine Research Reserve (NERR), the most recent addition to the National Estuarine Reserve System, is one of 28 areas across the country designated for long-term research on coastal resources and the human populations those resources support. The Lake Superior NERR is located along a river-to-lake gradient at the confluence of the St. Louis River and Lake Superior, the largest and most pristine of the Great Lakes.The Superior-Duluth harbor is one of the largest ports in the U.S. The Reserve works in partnership to improve the understanding of Lake Superior freshwater estuaries and coastal resources and to address the issues affecting them through an integrated program of research, education, outreach, and stewardship. The Reserve is comprised exclusively of public lands and waters and contains ~16,000 acres of repesentative terrestrial and aquatic habitats, including riparian and riverine habitat; riverine islands; emergent freshwater marshes, interdunal wetlands and scrub swamp; aspen, dry and hardwood forests; and open sand beach and dunes. The Lake Superior NERR land-owner partners are Wisconsin Department of Natural Resources, City of Superior, Douglas County and the University of Wisconsin. Several other partnering agencies, from both Minnesota and Wisconsin, and the Fond du Lac Band of the Lake Superior Chippewa also sit on our Reserve Advisory Board.