How Clean Is Minnewaska Lake?
Minnewaska 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): 11 ft. Phosphorus: 24 µg/L. Chlorophyll-a (algae): 6 µg/L. Trophic State Index: 47.
Cleanliness Snapshot
| Metric | Minnewaska Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 11 ft | — |
| Phosphorus | 24 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 6 µg/L | <10 = clean |
| Trophic State Index | 47 | <50 = clean |
How does Minnewaska Lake compare?
Minnewaska Lake's grade of A matches or beats the Minnesota state average of C. It ranks #2 of 20 lakes in Pope County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.