How Clean Is Curtis Lake?
Curtis 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): 4 ft. Trophic State Index: 57.
Cleanliness Snapshot
| Metric | Curtis Lake | Minnesota avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 4 ft | — |
| Trophic State Index | 57 | <50 = clean |
How does Curtis Lake compare?
Curtis Lake's grade of D falls below the Minnesota state average of C. It ranks #1 of 5 lakes in Yellow Medicine County by water quality score. Multi-year monitoring data shows water quality is improving based on 4 years of records.