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

Dec 02, 2024 10:00 AM

This may not be current data


Water Quality

Water Temperature
32° F
0.8° C

Specific Conductivity
0.27 mS/cm

Dissolved Oxygen
96.1%

Dissolved Oxygen
13.7 mg/L

Salinity
0.1 PSU

Depth
Missing Data
Missing Data

pH
8.1 standard units

Turbidity
12 FNU/NTU

Chorophyl Fluoresence
19.3 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 19, 2025 12:00 AM

Weather

Air Temp
36.7° F

2.6° C

Wind Speed
2.6 mps (4.5 mph)

Max Wind Speed
5.3 mps (11.2 mph)

Wind Dir
158°

Rel Humidity
87% saturated

Bar Pressure
1022 millibars

Cum Precip
2.5mm

Total PAR
0.0mmol/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