Is Lake Ashtabula Safe for Swimming?
Lake Ashtabula in Barnes County, North Dakota has nutrient and algae measurements on record from state and federal monitoring. A water-quality reading is not a swimming clearance. The state water agency and county health departments post current advisories; check them before you swim.. 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 |
|---|---|
| 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?
On nutrient and algae readings, Lake Ashtabula matches or beats the North Dakota state average. It ranks #3 of 3 lakes in Barnes County on nutrient and algae readings.
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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