How Clean Is Eagle Lake?
Eagle Lake is among the cleanest lakes in Minnesota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 22.6 ft. Phosphorus: 5 µg/L. Chlorophyll-a (algae): 1.8 µg/L. Trophic State Index: 32.
Cleanliness Snapshot
| Metric | Eagle Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 22.6 ft | — |
| Phosphorus | 5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 1.8 µg/L | <10 = clean |
| Trophic State Index | 32 | <50 = clean |
How does Eagle Lake compare?
Eagle Lake's grade of A matches or beats the Minnesota state average of C. It ranks #10 of 66 lakes in Otter Tail County by water quality score. Multi-year monitoring data shows water quality is declining based on 6 years of records.