Is Long Branch Lk. Lake Safe for Swimming?
Long Branch Lk. Lake in Macon County, Wisconsin has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 1.8 ft visibility. Phosphorus: 43.5 µg/L. Chlorophyll-a (algae): 16.1 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 1.8 ft |
| Phosphorus | 43.5 μg/L |
| Chlorophyll-a (Algae) | 16.1 μg/L |
| Location | Macon County, Wisconsin |
How does Long Branch Lk. Lake compare?
With an overall water quality grade of D, Long Branch Lk. Lake falls below the Wisconsin state average of Grade C. It ranks #3 of 4 lakes in Macon County by water quality score.
Water clarity (Secchi depth) sits at 1.8 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff. Algae levels (chlorophyll-a) measure 16.1 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.