How Clean Is Rachel Lake?
Rachel Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 7.9 ft. Phosphorus: 22.5 µg/L. Chlorophyll-a (algae): 3.9 µg/L. Trophic State Index: 47.
Cleanliness Snapshot
| Metric | Rachel Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 7.9 ft | — |
| Phosphorus | 22.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 3.9 µg/L | <10 = clean |
| Trophic State Index | 47 | <50 = clean |
How does Rachel Lake compare?
Rachel Lake's readings match or beat the Minnesota state average. It ranks #14 of 37 lakes in Douglas County by water quality score. Multi-year monitoring data shows water quality is declining based on 6 years of records.
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