D
Martin Lake
Anoka County, Minnesota
Water Quality Grade: D — Poor
Very murky — less than 2.5 feet of visibility. Phosphorus level: 53.5 µg/L. Chlorophyll-a: 28.9 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.76 m | F |
| Phosphorus | 53.5 µg/L | C |
| Chlorophyll-a (Algae) | 28.9 µg/L | D |
County Ranking
Ranked #18 of 26 lakes in Anoka County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-18
Monitoring stations: 2