How Clean Is Spirit Lake?
Spirit 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): 1.3 ft. Phosphorus: 59.5 µg/L. Trophic State Index: 68.
Cleanliness Snapshot
| Metric | Spirit Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 1.3 ft | — |
| Phosphorus | 59.5 µg/L | <30 = clean |
| Trophic State Index | 68 | <50 = clean |
How does Spirit Lake compare?
Spirit Lake's grade of D falls below the Wisconsin state average of C. It ranks #25 of 44 lakes in Douglas County by water quality score.