How Clean Is Nelson Lake?
Nelson Lake is a clean lake by Wisconsin standards. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 5 ft. Phosphorus: 22.8 µg/L. Trophic State Index: 52.
Cleanliness Snapshot
| Metric | Nelson Lake | Wisconsin avg |
|---|---|---|
| Water Clarity (Secchi) | 5 ft | — |
| Phosphorus | 22.8 µg/L | <30 = clean |
| Trophic State Index | 52 | <50 = clean |
How does Nelson Lake compare?
Nelson Lake's readings match or beat the Wisconsin state average. It ranks #18 of 45 lakes in Sawyer 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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