F
County K Marsh Lake
Green Lake County, WisconsinLimited Data
Water Quality Grade: F — Very Poor
No clarity data. Phosphorus level: 149.5 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 149.5 µg/L | F |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #18 of 18 lakes in Green Lake County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-11-20
Monitoring stations: 1