How Clean Is Big Carnelian Lake?
Big Carnelian Lake is among the cleanest lakes in Minnesota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 46.8 ft. Trophic State Index: 22.
Cleanliness Snapshot
| Metric | Big Carnelian Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 46.8 ft | — |
| Trophic State Index | 22 | <50 = clean |
How does Big Carnelian Lake compare?
Big Carnelian Lake's grade of A matches or beats the Minnesota state average of C. It ranks #3 of 31 lakes in Washington County by water quality score. Multi-year monitoring data shows water quality is stable based on 5 years of records.