How Clean Is Clear Lake?
Clear 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): 2.5 ft. Phosphorus: 151 µg/L. Trophic State Index: 70.
Cleanliness Snapshot
| Metric | Clear Lake | Minnesota avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 2.5 ft | — |
| Phosphorus | 151 µg/L | <30 = clean |
| Trophic State Index | 70 | <50 = clean |
How does Clear Lake compare?
Clear Lake's grade of F falls below the Minnesota state average of C. It ranks #3 of 6 lakes in Waseca County by water quality score. Multi-year monitoring data shows water quality is stable based on 4 years of records.