D
Unnamed Lake
Mahnomen County, Minnesota
Water Quality Grade: D — Poor
Very murky — less than 3.3 feet of visibility. Phosphorus level: 60 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 m | F |
| Phosphorus | 60 µg/L | D |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #16 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: 2022-09-27
Monitoring stations: 1