Is North Grave Lake Safe for Swimming?
North Grave Lake in Itasca County, Minnesota has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 13 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 13 ft |
| Maximum Depth | 39 ft |
| Location | Itasca County, Minnesota |
How does North Grave Lake compare?
With an overall water quality grade of B, North Grave Lake matches or beats the Minnesota state average of Grade C. It ranks #87 of 141 lakes in Itasca County by water quality score.
Water clarity (Secchi depth) sits at 13 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.