How Clean Is Upper Turtle Lake?
Upper Turtle Lake is a clean lake by Wisconsin standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 13.1 ft. Phosphorus: 41.2 µg/L. Trophic State Index: 49.
Cleanliness Snapshot
| Metric | Upper Turtle Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | B |
| Water Clarity (Secchi) | 13.1 ft | — |
| Phosphorus | 41.2 µg/L | <30 = clean |
| Trophic State Index | 49 | <50 = clean |
How does Upper Turtle Lake compare?
Upper Turtle Lake's grade of B matches or beats the Wisconsin state average of B. It ranks #26 of 38 lakes in Barron County by water quality score. Multi-year monitoring data shows water quality is declining based on 7 years of records.