How Clean Is Big Sandy Lake?
Big Sandy 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): 4.5 ft. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 11 µg/L. Trophic State Index: 54.
Cleanliness Snapshot
| Metric | Big Sandy Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 4.5 ft | — |
| Phosphorus | 30 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 11 µg/L | <10 = clean |
| Trophic State Index | 54 | <50 = clean |
How does Big Sandy Lake compare?
Big Sandy Lake's readings match or beat the Minnesota state average. It ranks #11 of 18 lakes in Aitkin County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.
Watch Big Sandy Lake water quality
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