How Clean Is Upper Turtle Lake?
Upper Turtle Lake has fair water quality — typical of lakes with moderate nutrient enrichment. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 4 ft. Phosphorus: 38.2 µg/L. Trophic State Index: 57.
Cleanliness Snapshot
| Metric | Upper Turtle Lake | Wisconsin avg |
|---|---|---|
| Water Clarity (Secchi) | 4 ft | — |
| Phosphorus | 38.2 µg/L | <30 = clean |
| Trophic State Index | 57 | <50 = clean |
How does Upper Turtle Lake compare?
Upper Turtle Lake's readings run above the Wisconsin state average. It ranks #19 of 28 lakes in Barron 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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