How Clean Is Cedar Lake?
Cedar 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): 6.1 ft. Phosphorus: 42.3 µg/L. Trophic State Index: 55.
Cleanliness Snapshot
| Metric | Cedar Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | B |
| Water Clarity (Secchi) | 6.1 ft | — |
| Phosphorus | 42.3 µg/L | <30 = clean |
| Trophic State Index | 55 | <50 = clean |
How does Cedar Lake compare?
Cedar Lake's grade of D falls below the Wisconsin state average of B. It ranks #40 of 55 lakes in Polk County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.