B
Lake Superior Pt5
Cook County, Minnesota
Water Quality Grade: B — Good
Very murky — less than -324.8 feet of visibility. Phosphorus level: 5.7 µg/L. Chlorophyll-a: 1.4 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | -99 m | F |
| Phosphorus | 5.7 µg/L | A |
| Chlorophyll-a (Algae) | 1.4 µg/L | A |
County Ranking
Ranked #75 of 144 lakes in Cook County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-04
Monitoring stations: 2