D
Madison Lake
Blue Earth County, Minnesota
Water Quality Grade: D — Poor
Murky — only visible to about 3.6 feet. Phosphorus level: 75 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.09 m | D |
| Phosphorus | 75 µg/L | D |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #2 of 9 lakes in Blue Earth County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-07
Monitoring stations: 1