Is Sugar Hollow Lake Safe for Swimming?
Sugar Hollow Lake in Warren County, Wisconsin has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 3.3 ft visibility. Phosphorus: 31.5 µg/L. Chlorophyll-a (algae): 14.7 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 3.3 ft |
| Phosphorus | 31.5 μg/L |
| Chlorophyll-a (Algae) | 14.7 μg/L |
| Location | Warren County, Wisconsin |
How does Sugar Hollow Lake compare?
With an overall water quality grade of D, Sugar Hollow Lake falls below the Wisconsin state average of Grade C. It ranks #14 of 16 lakes in Warren County by water quality score.
Water clarity (Secchi depth) sits at 3.3 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 14.7 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.