How Clean Is Shell Lake?
Shell Lake is a clean lake by Wisconsin standards. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 16 ft. Phosphorus: 15.2 µg/L. Trophic State Index: 40.
Cleanliness Snapshot
| Metric | Shell Lake | Wisconsin avg |
|---|---|---|
| Water Clarity (Secchi) | 16 ft | — |
| Phosphorus | 15.2 µg/L | <30 = clean |
| Trophic State Index | 40 | <50 = clean |
How does Shell Lake compare?
Shell Lake's readings match or beat the Wisconsin state average. It ranks #8 of 27 lakes in Washburn County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 6 years of records.
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