How Clean Is Spider Lake?
Spider Lake is among the cleanest lakes in Michigan. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 12 ft. Phosphorus: 7.5 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Trophic State Index: 39.
Cleanliness Snapshot
| Metric | Spider Lake | Michigan avg |
|---|---|---|
| Water Clarity (Secchi) | 12 ft | — |
| Phosphorus | 7.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 3.2 µg/L | <10 = clean |
| Trophic State Index | 39 | <50 = clean |
How does Spider Lake compare?
Spider Lake's readings match or beat the Michigan state average. It ranks #4 of 5 lakes in Grand Traverse County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 7 years of records.
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