How Clean Is Big Swan Lake?
Big Swan Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 2.5 ft. Phosphorus: 84 µg/L. Trophic State Index: 66.
Cleanliness Snapshot
| Metric | Big Swan Lake | Minnesota avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 2.5 ft | — |
| Phosphorus | 84 µg/L | <30 = clean |
| Trophic State Index | 66 | <50 = clean |
How does Big Swan Lake compare?
Big Swan Lake's grade of D falls below the Minnesota state average of C. It ranks #14 of 23 lakes in Meeker County by water quality score. Multi-year monitoring data shows water quality is stable based on 4 years of records.