B
Horsehead Lake -
Oconto County, Wisconsin
Water Quality Grade: B — Good
Crystal clear — you can see 20.5 feet down. Phosphorus level: 30 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.25 m | A |
| Phosphorus | 30 µg/L | C |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #121 of 167 lakes in Oconto County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-08-25
Monitoring stations: 1