Is Rossmere Lake safe to swim in?

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

Algoma District County, Ontario · Water Quality Report Card

Rossmere Lake

Grade B — Good

Oligotrophic

Rossmere Lake in Algoma District, Ontario received a water quality grade of B (Good). Water clarity: 2.1 m visibility. Phosphorus: 6.3 µg/L.

Clarity: 2.1 m
Type: Oligotrophic

Where to stay →Safe to swim?

Rossmere Lake is a cold, clear oligotrophic lake in Algoma District County, Ontario. Water quality is graded B based on 2 sampling years through 2019. Compared to the 217 other monitored lakes in Algoma District County, Rossmere Lake ranks #183 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2019-05-27. 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 6.9 ft. Phosphorus level: 6.3 µg/L. Trophic State Index: 40.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.1 m	C
Phosphorus	6.3 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	40	Oligotrophic

Low nutrients, clear water, excellent for swimming

Where to stay near Rossmere Lake

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Fishing Rossmere Lake

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

Location

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County Ranking

Ranked #183 of 218 lakes in Algoma District

Cleaner Lakes Within 30 Miles

Rossmere Lake holds Grade B. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Algoma District

Explore Rossmere Lake across LakeGrade

Lake Fishing Forecast

Species activity outlook by water temperature and season

Oligotrophic Lakes

Low nutrients, clear water, excellent for swimming

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Other Grade B Lakes in Ontario

Ice Lake

Manitoulin District · 2 m

Rose Lake

Sudbury District · 2.4 m

Wolsey Lake

Manitoulin District · 2.8 m

La Cloche Lake

Sudbury District · 2.7 m

Gough Lake

Sudbury District · 4.5 m

Cutler Lake

Sudbury District · 4.3 m

Oligotrophic Lakes in Ontario

Kecil Lake Tube Lake Tobacco Lake Nameless Lake

More records, surveys & data sources

Where this data comes from

Measurements for Rossmere 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: 2019-05-27

Monitoring stations:

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