D
Lake Redstone -
Sauk County, Wisconsin
Water Quality Grade: D — Poor
Moderate clarity — visible to about 8.8 feet. Phosphorus level: 109 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.67 m | C |
| Phosphorus | 109 µg/L | F |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #17 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: 2025-10-14
Monitoring stations: 1