B
Gass Lake - Deepest
Manitowoc County, Wisconsin
Water Quality Grade: B — Good
Crystal clear — you can see 19.7 feet down. Phosphorus level: 62.9 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6 m | A |
| Phosphorus | 62.9 µg/L | D |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #24 of 28 lakes in Manitowoc County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-08-24
Monitoring stations: 1