How Clean Is Little St Germain Lake?
Little St Germain Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 3.5 ft. Phosphorus: 45.4 µg/L. Trophic State Index: 59.
Cleanliness Snapshot
| Metric | Little St Germain Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 3.5 ft | — |
| Phosphorus | 45.4 µg/L | <30 = clean |
| Trophic State Index | 59 | <50 = clean |
How does Little St Germain Lake compare?
Little St Germain Lake's grade of C matches or beats the Wisconsin state average of C. It ranks #164 of 191 lakes in Vilas County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.