How Clean Is Happy Holler Lake?
Happy Holler Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Phosphorus: 63 µg/L. Chlorophyll-a (algae): 12.7 µg/L. Trophic State Index: 60.
Cleanliness Snapshot
| Metric | Happy Holler Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Phosphorus | 63 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 12.7 µg/L | <10 = clean |
| Trophic State Index | 60 | <50 = clean |
How does Happy Holler Lake compare?
Happy Holler Lake's grade of C matches or beats the Wisconsin state average of C. It ranks #1 of 1 lakes in Andrew County by water quality score.