How Clean Is Big Sand Lake?
Big Sand Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 23 ft. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 1.7 µg/L. Trophic State Index: 33.
Cleanliness Snapshot
| Metric | Big Sand Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 23 ft | — |
| Phosphorus | 7 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 1.7 µg/L | <10 = clean |
| Trophic State Index | 33 | <50 = clean |
How does Big Sand Lake compare?
Big Sand Lake's readings match or beat the Minnesota state average. It ranks #31 of 68 lakes in Hubbard County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 6 years of records.
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