How Clean Is Upper Clam Lake?
Upper Clam 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): 6.6 ft. Trophic State Index: 50.
Cleanliness Snapshot
| Metric | Upper Clam Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | B |
| Water Clarity (Secchi) | 6.6 ft | — |
| Trophic State Index | 50 | <50 = clean |
How does Upper Clam Lake compare?
Upper Clam Lake's grade of D falls below the Wisconsin state average of B. It ranks #68 of 70 lakes in Burnett County by water quality score. Multi-year monitoring data shows water quality is declining based on 7 years of records.