Is Lake of the Woods safe to swim in?

Good for swimming, clear water with low algae levels. Lake of the Woods has an overall water quality grade of B. Always check local health department advisories before swimming.

Kenora District County, Ontario · 49.59°N · Water Quality Report Card

Lake of the Woods

Grade B — Good

Mesotrophic

Lake of the Woods in Kenora District, Ontario received a water quality grade of B (Good). Water clarity: 2.9 m visibility. Phosphorus: 17.7 µg/L.

Clarity: 2.9 m
Type: Mesotrophic

Where to stay →Safe to swim?

Lake of the Woods is a mesotrophic lake in Kenora District County, Ontario. Water quality is graded B based on 2 sampling years through 2025. Compared to the 341 other monitored lakes in Kenora District County, Lake of the Woods ranks #156 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-09-24. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Moderate clarity, visible to about 9.5 ft. Phosphorus level: 17.7 µg/L. Trophic State Index: 45.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.9 m	C
Phosphorus	17.7 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	45	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Lake of the Woods

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