How Clean Is Dead Lake?
Dead 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): 10.2 ft. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 5.8 µg/L. Trophic State Index: 46.
Cleanliness Snapshot
| Metric | Dead Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 10.2 ft | — |
| Phosphorus | 20 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 5.8 µg/L | <10 = clean |
| Trophic State Index | 46 | <50 = clean |
How does Dead Lake compare?
Dead Lake's grade of A matches or beats the Minnesota state average of C. It ranks #7 of 66 lakes in Otter Tail County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.