A
Cruson Slough -- Lone Rock Unit #1 Lake
Racine County, Wisconsin
Water Quality Grade: A — Excellent
Crystal clear — you can see 25.1 feet down. Phosphorus level: 28.9 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.65 m | A |
| Phosphorus | 28.9 µg/L | B |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #1 of 2 lakes in Racine County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-10-31
Monitoring stations: 1