Is Plateau Lake safe to swim in?

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

Rainy River District County, Ontario · Water Quality Report Card

Plateau Lake

Grade B — Good

Mesotrophic

Plateau Lake in Rainy River District, Ontario received a water quality grade of B (Good). Water clarity: 2.4 m visibility. Phosphorus: 9.5 µg/L.

Clarity: 2.4 m
Type: Mesotrophic

Where to stay →Safe to swim?

Plateau Lake is a mesotrophic lake in Rainy River District County, Ontario. Water quality is graded B based on 2 sampling years through 2018. Compared to the 79 other monitored lakes in Rainy River District County, Plateau Lake ranks #41 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2018-05-29. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Compare the safest swimming lakes near Ely →

Water Quality Grade: B, Good

Moderate clarity, visible to about 7.7 ft. Phosphorus level: 9.5 µg/L. Trophic State Index: 42.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.35 m	C
Phosphorus	9.5 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	42	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Plateau Lake

Compare lakeside cabins, hotels, and vacation rentals near Plateau Lake in Rainy River District, Ontario — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Plateau Lake

→ Plateau Lake fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #41 of 80 lakes in Rainy River District

Cleaner Lakes Within 30 Miles

Plateau Lake holds Grade B. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Rainy River District

Explore Plateau Lake across LakeGrade

Lake Fishing Forecast

Species activity outlook by water temperature and season

Mesotrophic Lakes

Moderate nutrients, good water quality

The State of Ontario's Lakes

Ontario's cleanest and most-polluted lakes, ranked

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Cleanest lakes in Ontario

Top 25 by overall water quality score

Clearest lakes in Ontario

Top 25 by Secchi water clarity

Best swimming lakes in Ontario

Grade A/B + low algae filter

Family fishing lakes in Ontario

Panfish-rich, public access

All Ontario lakes

Full state directory

Other Grade B Lakes in Ontario

Kay Lake

Kenora District · 2.4 m

Union Lake

Thunder Bay District · 2 m

Scotch Lake

Kenora District · 2.8 m

Pyramid Lake

Kenora District · 2.3 m

Bedivere Lake

Thunder Bay District · 2.4 m

Agimak Lake

Kenora District · 2.3 m

Mesotrophic Lakes in Ontario

Union Lake Mack Lake Pyramid Lake Bedivere Lake

More records, surveys & data sources

Where this data comes from

Measurements for Plateau Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.

Data Sources

Water quality data from the EPA Water Quality Portal

Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion

Most recent sample: 2018-05-29

Monitoring stations:

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