How Clean Is Spooner Lake?
Spooner 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): 6.5 ft. Phosphorus: 22.7 µg/L. Trophic State Index: 50.
Cleanliness Snapshot
| Metric | Spooner Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 6.5 ft | — |
| Phosphorus | 22.7 µg/L | <30 = clean |
| Trophic State Index | 50 | <50 = clean |
How does Spooner Lake compare?
Spooner Lake's grade of C matches or beats the Wisconsin state average of C. It ranks #42 of 47 lakes in Washburn County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.