How Clean Is Perch Lake?
Perch Lake is among the cleanest lakes in Michigan. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 6 ft. Phosphorus: 24 µg/L. Chlorophyll-a (algae): 4.8 µg/L. Trophic State Index: 49.
Cleanliness Snapshot
| Metric | Perch Lake | Michigan avg |
|---|---|---|
| Water Clarity (Secchi) | 6 ft | — |
| Phosphorus | 24 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4.8 µg/L | <10 = clean |
| Trophic State Index | 49 | <50 = clean |
How does Perch Lake compare?
Perch Lake's readings match or beat the Michigan state average. It ranks #4 of 21 lakes in Iron County on nutrient and algae readings. Multi-year monitoring data shows water quality is stable based on 7 years of records.
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