Is Lake Tishomingo Nr. Dam Safe for Swimming?
Lake Tishomingo Nr. Dam in Jefferson County, Wisconsin has a water quality grade of C (Fair). Generally safe for swimming, moderate water quality. Water clarity: 5.4 ft visibility. Phosphorus: 23.5 µg/L. Chlorophyll-a (algae): 7.1 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | C (Fair) |
| Water Clarity (Secchi Depth) | 5.4 ft |
| Phosphorus | 23.5 μg/L |
| Chlorophyll-a (Algae) | 7.1 μg/L |
| Location | Jefferson County, Wisconsin |
How does Lake Tishomingo Nr. Dam compare?
With an overall water quality grade of C, Lake Tishomingo Nr. Dam matches or beats the Wisconsin state average of Grade C. It ranks #5 of 7 lakes in Jefferson County by water quality score.
Water clarity (Secchi depth) sits at 5.4 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 7.1 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.