C
Carstens Lake
Manitowoc County, Wisconsin
Water Quality Grade: C — Fair
Crystal clear — you can see 17.2 feet down. Phosphorus level: 92.6 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.25 m | A |
| Phosphorus | 92.6 µg/L | F |
| Chlorophyll-a (Algae) | No data |
Location
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County Ranking
Ranked #15 of 18 lakes in Manitowoc County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-08-25
Monitoring stations: 2