How Clean Is Cedar Lake?
Cedar Lake has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 2 ft. Phosphorus: 91 µg/L. Chlorophyll-a (algae): 72.6 µg/L. Trophic State Index: 70.
Cleanliness Snapshot
| Metric | Cedar Lake | Minnesota avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 2 ft | — |
| Phosphorus | 91 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 72.6 µg/L | <10 = clean |
| Trophic State Index | 70 | <50 = clean |
How does Cedar Lake compare?
Cedar Lake's grade of F falls below the Minnesota state average of C. It ranks #5 of 14 lakes in Rice County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.