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
Featured Event
Current Conditions on the St. Louis River Estuary
Barker's Island
Sep 16, 2026 1:15 PM
This may not be current data
Water Quality
Water Temperature
64.4° F
18.3° C
Specific Conductivity
0.00 mS/cm
Dissolved Oxygen
99.5%
Dissolved Oxygen
9.4 mg/L
Salinity
0.0 PSU
Depth
0 ft
0.16 m
pH
7.5 standard units
Turbidity
5 FNU/NTU
Chorophyl Fluoresence
0.03 ug/L
All Data is property of NOAA Office for Coastal Management (OCM) / National Estuarine Research Reserve System (NERRS)
Barker's Island
Nov 24, 2025 10:57 AM
This may not be current data
Nutrients
Orthophospate
0.015 mg/L as P
Ammonium
0.074 mg/L as N
Nitrite
Missing Data
Nitrate
Missing Data
Nitrite + Nitrate
0.516 mg/L as N
Chlorophyll
2.22 ug/L
All Data is property of NOAA Office for Coastal Management (OCM) / National Estuarine Research Reserve System (NERRS)
Pokegama Bay
Sep 19, 2026 3:00 AM
Weather
Air Temp
56.1° F
13.4° C
Wind Speed
1.4 mps (2.2 mph)
Max Wind Speed
3.4 mps (6.7 mph)
Wind Dir
58°
Rel Humidity
100% saturated
Bar Pressure
1019 millibars
Cum Precip
0.0mm
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