D
Lake Redstone -
Sauk County, Wisconsin
Water Quality Grade: D — Poor
Murky — only visible to about 6.6 feet. Phosphorus level: 79.9 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 m | D |
| Phosphorus | 79.9 µg/L | D |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #19 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: 2025-09-16
Monitoring stations: 1