How Clean Is East Graham Lake?
East Graham Lake is algae-prone, with a higher bloom risk in warm months. It received a water quality grade of F (Algae-prone) based on EPA monitoring data. Water clarity (Secchi depth): 3.3 ft. Phosphorus: 184 µg/L. Chlorophyll-a (algae): 80.1 µg/L. Trophic State Index: 71.
Cleanliness Snapshot
| Metric | East Graham Lake | Minnesota avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 3.3 ft | — |
| Phosphorus | 184 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 80.1 µg/L | <10 = clean |
| Trophic State Index | 71 | <50 = clean |
How does East Graham Lake compare?
East Graham Lake's grade of F falls below the Minnesota state average of C. It ranks #4 of 5 lakes in Nobles County by water quality score.