A
Little Rock Lake - South
Vernon County, WisconsinLimited Data
Water Quality Grade: A — Excellent
No clarity data. Phosphorus level: 10.8 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 10.8 µg/L | A |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #193 of 245 lakes in Vernon County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-10-30
Monitoring stations: 1