How Clean Is Fish Lake?
Fish Lake has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 2 ft. Trophic State Index: 67.
Cleanliness Snapshot
| Metric | Fish Lake | Minnesota avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 2 ft | — |
| Trophic State Index | 67 | <50 = clean |
How does Fish Lake compare?
Fish Lake's grade of F falls below the Minnesota state average of C. It ranks #6 of 7 lakes in Kanabec County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.