Is Rush Lake Safe for Swimming?
Rush Lake in Otter Tail County, Minnesota has a water quality grade of C (Fair). Generally safe for swimming, moderate water quality. Water clarity: 7.5 ft visibility. Phosphorus: 27 µg/L. Chlorophyll-a (algae): 9.8 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | C (Fair) |
| Water Clarity (Secchi Depth) | 7.5 ft |
| Phosphorus | 27 μg/L |
| Chlorophyll-a (Algae) | 9.8 μg/L |
| Maximum Depth | 68 ft |
| Location | Otter Tail County, Minnesota |
How does Rush Lake compare?
With an overall water quality grade of C, Rush Lake matches or beats the Minnesota state average of Grade C. It ranks #58 of 66 lakes in Otter Tail County by water quality score.
Water clarity (Secchi depth) sits at 7.5 feet. That puts the lake in good clarity range, with limited algae interference. Algae levels (chlorophyll-a) measure 9.8 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.
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