How Clean Is Rock Lake Village Lake?
Rock Lake Village Lake is a clean lake by Wisconsin standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 4.3 ft. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 4.8 µg/L. Trophic State Index: 49.
Cleanliness Snapshot
| Metric | Rock Lake Village Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 4.3 ft | — |
| Phosphorus | 16 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4.8 µg/L | <10 = clean |
| Trophic State Index | 49 | <50 = clean |
How does Rock Lake Village Lake compare?
Rock Lake Village Lake's grade of B matches or beats the Wisconsin state average of C. It ranks #1 of 5 lakes in Johnson County by water quality score.