Is Prairie Lake Safe for Swimming?
Prairie Lake in St. Louis 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: 5 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | NR (Not rated) |
| Water Clarity (Secchi Depth) | 5 ft |
| Maximum Depth | 47 ft |
| Location | St. Louis County, Minnesota |
How does Prairie Lake compare?
Prairie Lake is not rated for water quality — its monitoring record does not meet the evidence bar, so it is not compared with the Minnesota state average.
Water clarity (Secchi depth) sits at 5 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.