The Lake Superior NERRSuperior, WI The Lake Superior NERR, a 16,697 acre freshwater estuary site located at the St. Louis River in Wisconsin, will emphasize an integrated approach to research, education and stewardship programming. The Lake Superior NERR will address important coastal management issues and examine key coastal ecosystem processes that affect the St. Louis River freshwater estuary as well as other Great Lakes freshwater estuaries. | ||