How Clean Is Little St Germain Lake?
Little St Germain Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 3.5 ft. Phosphorus: 45.1 µg/L. Trophic State Index: 59.
Cleanliness Snapshot
| Metric | Little St Germain Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | B |
| Water Clarity (Secchi) | 3.5 ft | — |
| Phosphorus | 45.1 µg/L | <30 = clean |
| Trophic State Index | 59 | <50 = clean |
How does Little St Germain Lake compare?
Little St Germain Lake's grade of D falls below the Wisconsin state average of B. It ranks #103 of 103 lakes in Vilas County by water quality score. Multi-year monitoring data shows water quality is improving based on 7 years of records.