D
Porcupine Lake
Aitkin County, Minnesota
Water Quality Grade: D — Poor
Very murky — less than 1.5 feet of visibility. Phosphorus level: 51 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.45 m | F |
| Phosphorus | 51 µg/L | C |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #53 of 56 lakes in Aitkin County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-06-30
Monitoring stations: 1