Is Fall Lake Safe for Swimming?
Fall Lake in Lake County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 5.5 ft visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 6 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 5.5 ft |
| Phosphorus | 21 μg/L |
| Chlorophyll-a (Algae) | 6 μg/L |
| Maximum Depth | 32 ft |
| Location | Lake County, Minnesota |
How does Fall Lake compare?
With an overall water quality grade of A, Fall Lake matches or beats the Minnesota state average of Grade C. It ranks #6 of 35 lakes in Lake County by water quality score.
Water clarity (Secchi depth) sits at 5.5 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 6 µg/L — low and well within safe swimming guidelines.
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