B
Butternut Lake -
Portage County, Wisconsin
Water Quality Grade: B — Good
Good clarity — visible to about 13.1 feet. Phosphorus level: 36.2 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4 m | B |
| Phosphorus | 36.2 µg/L | C |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #18 of 27 lakes in Portage County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-08-17
Monitoring stations: 1