How Clean Is Blackwater Lake?
Blackwater Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 4.4 ft. Trophic State Index: 56.
Cleanliness Snapshot
| Metric | Blackwater Lake | Minnesota avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 4.4 ft | — |
| Trophic State Index | 56 | <50 = clean |
How does Blackwater Lake compare?
Blackwater Lake's grade of D falls below the Minnesota state average of C. It ranks #132 of 141 lakes in Itasca County by water quality score.