A
Alder Lake
Cook County, Minnesota
Water Quality Grade: A — Excellent
Good clarity — visible to about 13.8 feet. Phosphorus level: 8 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.2 m | B |
| Phosphorus | 8 µg/L | A |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #44 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: 2022-07-27
Monitoring stations: 1