What is the water-quality readings for North Grave Lake?

North Grave Lake has limited nutrient and algae sampling on record. Water clarity reads 13 feet (Secchi depth). North Grave Lake has too little recent summer sampling to compare with the Minnesota state average.

Where is North Grave Lake?

North Grave Lake is located in Itasca County, Minnesota. It spans 525 acres with a maximum depth of 39 feet. 15 fish species have been documented in the lake.

Swimming at North Grave Lake: Water Readings and Advisories

North Grave Lake in Itasca County, Minnesota has limited nutrient and algae sampling on record. A water-quality reading is not a swimming clearance. The state water agency and county health departments post current advisories; check them before you swim.. Water clarity: 13 ft visibility. Always check local health department advisories before swimming.

Key Metrics

Metric	Value
Water Clarity (Secchi Depth)	13 ft
Maximum Depth	39 ft
Location	Itasca County, Minnesota

How does North Grave Lake compare?

North Grave Lake is not rated for water quality — it does not have enough recent summer sampling for a readings, so it is not compared with the Minnesota state average.

Water clarity (Secchi depth) sits at 13 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.

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