C
Loon Lake Deep
Cook County, Minnesota
Water Quality Grade: C — Fair
Very murky — less than -324.8 feet of visibility. Phosphorus level: 23 µg/L. Chlorophyll-a: 7.6 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | -99 m | F |
| Phosphorus | 23 µg/L | B |
| Chlorophyll-a (Algae) | 7.6 µg/L | B |
County Ranking
Ranked #98 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: 2022-10-03
Monitoring stations: 2