How Clean Is Spring Lake?
Spring Lake is among the cleanest lakes in Minnesota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Chlorophyll-a (algae): 3.6 µg/L. Trophic State Index: 43.
Cleanliness Snapshot
| Metric | Spring Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Chlorophyll-a (Algae) | 3.6 µg/L | <10 = clean |
| Trophic State Index | 43 | <50 = clean |
How does Spring Lake compare?
Spring Lake's grade of A matches or beats the Minnesota state average of C. It ranks #20 of 77 lakes in Hubbard County by water quality score.