A
Spring Lake - Deepest Spot
Polk County, Wisconsin
Water Quality Grade: A — Excellent
Crystal clear — you can see 27.5 feet down. Phosphorus level: 29.9 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.38 m | A |
| Phosphorus | 29.9 µg/L | B |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #23 of 31 lakes in Polk County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-24
Monitoring stations: 1