A
Montana Lake - Deep Spot
Marinette County, Wisconsin
Water Quality Grade: A — Excellent
Crystal clear — you can see 26.2 feet down. Phosphorus level: 17.5 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8 m | A |
| Phosphorus | 17.5 µg/L | A |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #20 of 27 lakes in Marinette County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-07-24
Monitoring stations: 1