D
Martha Lake
Wright County, Minnesota
Water Quality Grade: D — Poor
Very murky — less than 3.0 feet of visibility. Phosphorus level: 75 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.91 m | F |
| Phosphorus | 75 µg/L | D |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #47 of 65 lakes in Wright County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-02
Monitoring stations: 1