Is Irene Lake Safe for Swimming?
Irene Lake in Douglas County, Minnesota has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 9.8 ft visibility. Phosphorus: 24 µg/L. Chlorophyll-a (algae): 7.4 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 9.8 ft |
| Phosphorus | 24 μg/L |
| Chlorophyll-a (Algae) | 7.4 μg/L |
| Maximum Depth | 44 ft |
| Location | Douglas County, Minnesota |
How does Irene Lake compare?
With an overall water quality grade of B, Irene Lake matches or beats the Minnesota state average of Grade C. It ranks #26 of 37 lakes in Douglas County by water quality score.
Water clarity (Secchi depth) sits at 9.8 feet. That puts the lake in good clarity range, with limited algae interference. Algae levels (chlorophyll-a) measure 7.4 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.