How Clean Is Lake Keomah?
Lake Keomah has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 1.5 ft. Chlorophyll-a (algae): 63 µg/L. Trophic State Index: 71.
Cleanliness Snapshot
| Metric | Lake Keomah | Wisconsin avg |
|---|---|---|
| Overall Grade | F | D |
| Water Clarity (Secchi) | 1.5 ft | — |
| Chlorophyll-a (Algae) | 63 µg/L | <10 = clean |
| Trophic State Index | 71 | <50 = clean |
How does Lake Keomah compare?
Lake Keomah's grade of F falls below the Wisconsin state average of D. It ranks #3 of 3 lakes in Mahaska County by water quality score.