How Clean Is Island Lake?
Island Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 15 ft. Phosphorus: 19 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Trophic State Index: 42.
Cleanliness Snapshot
| Metric | Island Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 15 ft | — |
| Phosphorus | 19 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 3.2 µg/L | <10 = clean |
| Trophic State Index | 42 | <50 = clean |
How does Island Lake compare?
Island Lake's readings match or beat the Minnesota state average. It ranks #12 of 84 lakes in Becker County on nutrient and algae readings. Multi-year monitoring data shows water quality is improving based on 6 years of records.
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