How Clean Is Ml-Peterson Lake?
Ml-Peterson Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 7.4 ft. Phosphorus: 26 µg/L. Chlorophyll-a (algae): 3.9 µg/L. Trophic State Index: 48.
Cleanliness Snapshot
| Metric | Ml-Peterson Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 7.4 ft | — |
| Phosphorus | 26 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 3.9 µg/L | <10 = clean |
| Trophic State Index | 48 | <50 = clean |
How does Ml-Peterson Lake compare?
Ml-Peterson Lake's grade of C matches or beats the Minnesota state average of C. It ranks #8 of 9 lakes in Mille Lacs County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.