How Clean Is Rathbun Lake?
Rathbun 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): 3 ft. Chlorophyll-a (algae): 15.3 µg/L. Trophic State Index: 59.
Cleanliness Snapshot
| Metric | Rathbun Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | D |
| Water Clarity (Secchi) | 3 ft | — |
| Chlorophyll-a (Algae) | 15.3 µg/L | <10 = clean |
| Trophic State Index | 59 | <50 = clean |
How does Rathbun Lake compare?
Rathbun Lake's grade of D matches or beats the Wisconsin state average of D. It ranks #1 of 1 lakes in Appanoose County by water quality score.