Is Bowman-Haley Dam Lake Safe for Swimming?
Bowman-Haley Dam Lake in Bowman County, North Dakota has a water quality grade of D (Nutrient-rich). Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Water clarity: 3.9 ft visibility. Phosphorus: 96.5 µg/L. Chlorophyll-a (algae): 13.2 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Nutrient-rich) |
| Water Clarity (Secchi Depth) | 3.9 ft |
| Phosphorus | 96.5 μg/L |
| Chlorophyll-a (Algae) | 13.2 μg/L |
| Location | Bowman County, North Dakota |
How does Bowman-Haley Dam Lake compare?
With an overall water quality grade of D, Bowman-Haley Dam Lake falls below the North Dakota state average of Grade C. It ranks #4 of 4 lakes in Bowman County by water quality score.
Water clarity (Secchi depth) sits at 3.9 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 13.2 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.
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