B
Delavan Lake -
Vilas County, Wisconsin
Water Quality Grade: B — Good
Crystal clear — you can see 24.9 feet down. Phosphorus level: 53.2 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.6 m | A |
| Phosphorus | 53.2 µg/L | C |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #28 of 43 lakes in Vilas County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-10-27
Monitoring stations: 1