How Clean Is Blue Lake?
Blue 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): 23 ft. Phosphorus: 10.7 µg/L. Trophic State Index: 35.
Cleanliness Snapshot
| Metric | Blue Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | B |
| Water Clarity (Secchi) | 23 ft | — |
| Phosphorus | 10.7 µg/L | <30 = clean |
| Trophic State Index | 35 | <50 = clean |
How does Blue Lake compare?
Blue Lake's grade of B matches or beats the Wisconsin state average of B. It ranks #28 of 67 lakes in Oneida County by water quality score. Multi-year monitoring data shows water quality is declining based on 7 years of records.