How Clean Is Swan Lake?
Swan Lake is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 15.6 ft. Trophic State Index: 38.
Cleanliness Snapshot
| Metric | Swan Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 15.6 ft | — |
| Trophic State Index | 38 | <50 = clean |
How does Swan Lake compare?
Swan Lake's grade of A matches or beats the Wisconsin state average of B. It ranks #1 of 10 lakes in Columbia County by water quality score.