Research, education, outreach and stewardship along Lake Superior’s coast

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

Improving the understanding of Lake Superior’s coast and estuaries

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, system-wide monitoring, education, coastal training and stewardship.

A Gathering Place for Learning and Play

Lake Superior Estuarium logo

Enjoy, explore and experience!

The Estuarium is open Wednesdays and Fridays 10:00a.m.—5:00p.m.
Saturdays 10:00a.m.—2:00p.m. Come enjoy special activities the first Saturday of every month!
FREE ADMISSION!

The front of a red building with tan trim

Happening at the Lake Superior Reserve

Now accepting applications

In one year, what strides can your community make toward resilience? The Enduring Lake Superior Communities program is accepting team applications for its new cohort year. Details and application information here.

Lake Superior Day logo imagery

Come to Lake Superior Day

Join us on Barker’s Island in Superior to relax, play, and learn.
Details on the event page.

Current Conditions on the St. Louis River Estuary

A water quality station monitoring a body of water

Barker's Island

Jul 09, 2025 6:15 AM

Water Quality

Water Temperature
69.8° F
21.6° C

Specific Conductivity
0.21 mS/cm

Dissolved Oxygen
83.9%

Dissolved Oxygen
7.4 mg/L

Salinity
0.1 PSU

Depth
3.28 ft
1.37 m

pH
7.5 standard units

Turbidity
12 FNU/NTU

Chorophyl Fluoresence
Missing Data

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

A water quality station monitoring a body of water

Barker's Island

Nov 07, 2024 6:00 AM

This may not be current data


Nutrients

Orthophospate
0.015 mg/L as P

Ammonium
0.102 mg/L as N

Nitrite
Missing Data

Nitrate
Missing Data

Nitrite + Nitrate
0.434 mg/L as N

Chlorophyll
8.69 ug/L

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

A weather station in a marsh area

Pokegama Bay

Jul 09, 2025 6:00 AM

Weather

Air Temp
51.8° F

11.0° C

Wind Speed
0.2 mps (0 mph)

Max Wind Speed
0.7 mps (0 mph)

Wind Dir
256°

Rel Humidity
100% saturated

Bar Pressure
1019 millibars

Cum Precip
0.0mm

Total PAR
30.0mmol/m2/15mins

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

How to Pronounce

Lake Superior National Estuarine Research Reserve