How Clean Is Hanska Lake?
Hanska Lake is algae-prone, with a higher bloom risk in warm months. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 1 ft. Phosphorus: 219 µg/L. Chlorophyll-a (algae): 98.8 µg/L. Trophic State Index: 78.
Cleanliness Snapshot
| Metric | Hanska Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 1 ft | — |
| Phosphorus | 219 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 98.8 µg/L | <10 = clean |
| Trophic State Index | 78 | <50 = clean |
How does Hanska Lake compare?
Hanska Lake's readings run above the Minnesota state average. It ranks #4 of 4 lakes in Brown County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 4 years of records.
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