How Clean Is Greenwood Lake?
Greenwood Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 2.1 ft. Phosphorus: 27.5 µg/L. Trophic State Index: 59.
Cleanliness Snapshot
| Metric | Greenwood Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 2.1 ft | — |
| Phosphorus | 27.5 µg/L | <30 = clean |
| Trophic State Index | 59 | <50 = clean |
How does Greenwood Lake compare?
Greenwood Lake's grade of C matches or beats the Minnesota state average of C. It ranks #134 of 159 lakes in Lake County by water quality score.