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, Fridays, and Saturdays 10:00a.m.—5:00p.m. Enjoy, explore and experience the Estuarium.
FREE ADMISSION!

The front of a red building with tan trim

Happening at the Lake Superior Reserve

Volunteer at the Estuarium!

You could become a volunteer docent at the coolest estuary museum there is! Sign up to attend a docent training on May 27 or 31.

The River Walks logo

The River Walks are back

Current Conditions on the St. Louis River Estuary

A water quality station monitoring a body of water

Barker's Island

May 02, 2025 3:15 PM

This may not be current data


Water Quality

Water Temperature
48.2° F
9.8° C

Specific Conductivity
0.29 mS/cm

Dissolved Oxygen
101.1%

Dissolved Oxygen
11.4 mg/L

Salinity
0.1 PSU

Depth
3.28 ft
1.15 m

pH
8.0 standard units

Turbidity
9 FNU/NTU

Chorophyl Fluoresence
10.6 ug/L

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 08, 2023 2:45 PM

This may not be current data


Nutrients

Orthophospate
0.021 mg/L as P

Ammonium
0.121 mg/L as N

Nitrite
0.013 mg/L as N

Nitrate
0.385 mg/L as N

Nitrite + Nitrate
0.398 mg/L as N

Chlorophyll
3.03 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

May 23, 2025 2:00 PM

Weather

Air Temp
56.8° F

13.8° C

Wind Speed
2.5 mps (4.5 mph)

Max Wind Speed
5.0 mps (11.2 mph)

Wind Dir
148°

Rel Humidity
47% saturated

Bar Pressure
1020 millibars

Cum Precip
0.0mm

Total PAR
1676.0mmol/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