Is Diamond Lake Safe for Swimming?
Diamond Lake in Kandiyohi County, Minnesota 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: 5.6 ft visibility. Phosphorus: 65 µg/L. Chlorophyll-a (algae): 17.4 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Nutrient-rich) |
| Water Clarity (Secchi Depth) | 5.6 ft |
| Phosphorus | 65 μg/L |
| Chlorophyll-a (Algae) | 17.4 μg/L |
| Maximum Depth | 27 ft |
| Location | Kandiyohi County, Minnesota |
How does Diamond Lake compare?
With an overall water quality grade of D, Diamond Lake falls below the Minnesota state average of Grade C. It ranks #16 of 25 lakes in Kandiyohi County by water quality score.
Water clarity (Secchi depth) sits at 5.6 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 17.4 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.
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