Located on the St. Louis River Estuary in Superior, Wisconsin
A Gathering Place for Learning and Play
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!
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 are back
Current Conditions on the St. Louis River Estuary
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)
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)
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