How Clean Is Shelbyville Lake?
Shelbyville Lake 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 ft. Phosphorus: 252.5 µg/L. Chlorophyll-a (algae): 112.4 µg/L. Trophic State Index: 80.
Cleanliness Snapshot
| Metric | Shelbyville Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 1 ft | — |
| Phosphorus | 252.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 112.4 µg/L | <10 = clean |
| Trophic State Index | 80 | <50 = clean |
How does Shelbyville Lake compare?
Shelbyville Lake's grade of F falls below the Wisconsin state average of C. It ranks #2 of 2 lakes in Shelby County by water quality score.