C
Island Lake
Mahnomen County, Minnesota
Water Quality Grade: C — Fair
Murky — only visible to about 6.4 feet. Phosphorus level: 30 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.95 m | D |
| Phosphorus | 30 µg/L | C |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #14 of 17 lakes in Mahnomen County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-12
Monitoring stations: 2