How Clean Is Byllesby Lake?
Byllesby Lake is algae-prone, with a higher bloom risk in warm months. It received a water quality grade of F (Algae-prone) based on EPA monitoring data. Water clarity (Secchi depth): 3 ft. Phosphorus: 227 µg/L. Chlorophyll-a (algae): 40.7 µg/L. Trophic State Index: 70.
Cleanliness Snapshot
| Metric | Byllesby Lake | Minnesota avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 3 ft | — |
| Phosphorus | 227 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 40.7 µg/L | <10 = clean |
| Trophic State Index | 70 | <50 = clean |
How does Byllesby Lake compare?
Byllesby Lake's grade of F falls below the Minnesota state average of C. It ranks #41 of 45 lakes in Dakota County by water quality score. Multi-year monitoring data shows water quality is declining based on 3 years of records.
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