A
Lake Superior - Siskiwit
Bayfield County, Wisconsin
Water Quality Grade: A — Excellent
Crystal clear — you can see 59.2 feet down. Phosphorus level: 3.9 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 18.04 m | A |
| Phosphorus | 3.9 µg/L | A |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #37 of 93 lakes in Bayfield County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-06-24
Monitoring stations: 1