Is Lake Ashtabula Safe for Swimming?
Lake Ashtabula in Barnes County, North Dakota has a water quality grade of C (Fair). Generally safe for swimming, moderate water quality. Water clarity: 6.6 ft visibility. Phosphorus: 348 µg/L. Chlorophyll-a (algae): 3.4 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | C (Fair) |
| Water Clarity (Secchi Depth) | 6.6 ft |
| Phosphorus | 348 μg/L |
| Chlorophyll-a (Algae) | 3.4 μg/L |
| Location | Barnes County, North Dakota |
How does Lake Ashtabula compare?
With an overall water quality grade of C, Lake Ashtabula matches or beats the North Dakota state average of Grade C. It ranks #3 of 3 lakes in Barnes County by water quality score.
Water clarity (Secchi depth) sits at 6.6 feet. That puts the lake in good clarity range, with limited algae interference. Algae levels (chlorophyll-a) measure 3.4 µg/L — low and well within safe swimming guidelines.
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