Due to the COVID-19 virus outbreak and guidelines from Wisconsin Department of Health Services, UW–Madison, and federal agencies the Estuarium is closed and our facilities will have limited availability and access. Our staff are working remotely and many of our events have been postponed. Visit Facebook for updates. For the latest information on COVID-19, visit the Wisconsin Department of Health Services.

Located on the St. Louis River Estuary in Superior, Wisconsin

The Lake Superior National Estuarine Research Reserve works in partnership to improve the understanding of Lake Superior’s coast and estuaries. We address issues affecting the watershed through integration of research, education, outreach and stewardship.

Explore the Estuary

St. Louis River Estuary

The St. Louis River Estuary is a rich, unique and diverse place to explore. From sandy beaches to protected bays valued for bass, walleye and muskie fishing, to the wild Red River Breaks, the St. Louis River provides a wilderness experience within 10 minutes of the Twin Ports.

Get out and explore
St. Louis River Estuary

Live Data

45.3° F

7.4° C

Pokegama Bay

03/29/2020 14:00 (LST)

Wind Speed
2.0mps - 4.5mph
Max Wind Speed
5.1mps - 11.4mph
Wind Dir From
27° To SSW
Rel Humidity
Bar Pressure
Total PAR
Cum Precip

All Data is property of NOAA Office for Coastal Management (OCM) / National Estuarine Research Reserve System (NERRS)


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Lake Superior Estuarium

a better future

The Lake Superior Estuarium, our new public interpretive center, creates a better future through community, collaboration and place-based education.

students using interactive map table at Lake Superior Reserve Learning Center

10 Years and Counting – Collaborating for Success

St. Louis River Summit

Join us for the 10th Annual St. Louis River Summit on March 3-4, 2020 at the Duluth Entertainment Convention Center.

Register Now