How Clean Is Minnewawa Lake?
Minnewawa Lake has fair water quality — typical of lakes with moderate nutrient enrichment. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 5 ft. Phosphorus: 24.5 µg/L. Chlorophyll-a (algae): 11 µg/L. Trophic State Index: 53.
Cleanliness Snapshot
| Metric | Minnewawa Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 5 ft | — |
| Phosphorus | 24.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 11 µg/L | <10 = clean |
| Trophic State Index | 53 | <50 = clean |
How does Minnewawa Lake compare?
Minnewawa Lake's readings match or beat the Minnesota state average. It ranks #10 of 18 lakes in Aitkin County by water quality score. Multi-year monitoring data shows water quality is stable based on 2 years of records.
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