B
Joanis Lake -
Polk County, WisconsinLimited Data
Water Quality Grade: B — Good
No clarity data. Phosphorus level: 23 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 23 µg/L | B |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #28 of 31 lakes in Polk County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-11-18
Monitoring stations: 1