How Clean Is Forest Lake?
Forest 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): 4.1 ft. Phosphorus: 18 µg/L. Chlorophyll-a (algae): 4.8 µg/L. Trophic State Index: 50.
Cleanliness Snapshot
| Metric | Forest Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 4.1 ft | — |
| Phosphorus | 18 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4.8 µg/L | <10 = clean |
| Trophic State Index | 50 | <50 = clean |
How does Forest Lake compare?
Forest Lake's grade of B matches or beats the Wisconsin state average of C. It ranks #1 of 5 lakes in Adair County by water quality score.