B
Long Lake -
Sauk County, Wisconsin
Water Quality Grade: B — Good
Good clarity — visible to about 14.8 feet. Phosphorus level: 44.8 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.5 m | B |
| Phosphorus | 44.8 µg/L | C |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #9 of 21 lakes in Sauk 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