Is Mansell Lake safe to swim in?

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

Muskoka District County, Ontario · Water Quality Report Card

Mansell Lake

Grade B — Good

Mesotrophic

Mansell Lake in Muskoka District, Ontario received a water quality grade of B (Good). Water clarity: 2.2 m visibility. Phosphorus: 10.5 µg/L.

Clarity: 2.2 m
Type: Mesotrophic

Where to stay →Safe to swim?

Mansell Lake is a mesotrophic lake in Muskoka District County, Ontario. Water quality is graded B based on 2 sampling years through 2018. Compared to the 169 other monitored lakes in Muskoka District County, Mansell Lake ranks #111 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2018-08-28. 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 7.2 ft. Phosphorus level: 10.5 µg/L. Trophic State Index: 43.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.2 m	C
Phosphorus	10.5 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	43	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Mansell Lake

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Fishing Mansell Lake

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

Location

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County Ranking

Ranked #111 of 170 lakes in Muskoka District

Cleaner Lakes Within 30 Miles

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

See full comparison →

Nearby Lakes in Muskoka District

Explore Mansell 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

More Ontario Lake Rankings

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

Oxtongue Lake

Haliburton · 2.9 m

Cripple Lake

Parry Sound District · 2.7 m

Mirage Lake

Parry Sound District · Good

Victory Lake

Haliburton · 2.9 m

Woodrow Lake

Parry Sound District · 2.8 m

Minnow Lake

Nipissing District · 3.2 m

Mesotrophic Lakes in Ontario

Cripple Lake Mirage Lake Victory Lake Mcfadden Lake

More records, surveys & data sources

Where this data comes from

Measurements for Mansell 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: 2018-08-28

Monitoring stations:

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