How Clean Is South Bay Lake?
South Bay Lake is a clean lake by Wisconsin standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 12 ft. Trophic State Index: 41.
Cleanliness Snapshot
| Metric | South Bay Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 12 ft | — |
| Trophic State Index | 41 | <50 = clean |
How does South Bay Lake compare?
South Bay Lake's grade of B matches or beats the Wisconsin state average of C. It ranks #13 of 34 lakes in Forest County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.