Is Blackwater Lake Safe for Swimming?
Blackwater Lake in Itasca County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Not rated for swimming — there is not enough monitoring data to judge this lake. Water clarity: 4.4 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | NR (Not rated) |
| Water Clarity (Secchi Depth) | 4.4 ft |
| Maximum Depth | 72 ft |
| Location | Itasca County, Minnesota |
How does Blackwater Lake compare?
Blackwater Lake is not rated for water quality — it does not have enough recent summer sampling for a letter grade, so it is not compared with the Minnesota state average.
Water clarity (Secchi depth) sits at 4.4 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.
Watch Blackwater Lake water quality
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