How Clean Is Round Lake?
Round Lake is among the cleanest lakes in Minnesota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 10 ft. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 4.3 µg/L. Trophic State Index: 44.
Cleanliness Snapshot
| Metric | Round Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 10 ft | — |
| Phosphorus | 16 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4.3 µg/L | <10 = clean |
| Trophic State Index | 44 | <50 = clean |
How does Round Lake compare?
Round Lake's grade of A matches or beats the Minnesota state average of C. It ranks #4 of 84 lakes in Becker County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.
Watch Round Lake water quality
Get an email when the grade, clarity, or algae reading changes. Unsubscribe anytime.