Is Pickering Lake safe to swim in?

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

Parry Sound District County, Ontario · Water Quality Report Card

Pickering Lake

Grade B — Good

Mesotrophic

Pickering Lake in Parry Sound District, Ontario received a water quality grade of B (Good). Water clarity: 1.8 m visibility. Phosphorus: 10.2 µg/L.

Clarity: 1.8 m
Type: Mesotrophic

Where to stay →Safe to swim?

Pickering Lake is a mesotrophic lake in Parry Sound District County, Ontario. Water quality is graded B based on 2 sampling years through 2025. Compared to the 230 other monitored lakes in Parry Sound District County, Pickering Lake ranks #210 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-08-15. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Murky, only visible to about 5.9 ft. Phosphorus level: 10.2 µg/L. Trophic State Index: 45.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.8 m	D
Phosphorus	10.2 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	45	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Pickering Lake

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Fishing Pickering Lake

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

Location

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County Ranking

Ranked #210 of 231 lakes in Parry Sound District

Cleaner Lakes Within 30 Miles

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

See full comparison →

Nearby Lakes in Parry Sound District

Explore Pickering 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

Bruce Lake

Muskoka District · 3 m

Young Lake

Muskoka District · 2.6 m

Ricketts Lake

Muskoka District · 2 m

Ada Lake

Muskoka District · 2.1 m

Butterfly Lake

Muskoka District · 2.8 m

Stewart Lake

Muskoka District · 3 m

Mesotrophic Lakes in Ontario

Bruce Lake Young Lake Bass Lake Marion Lake

More records, surveys & data sources

Where this data comes from

Measurements for Pickering 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: 2025-08-15

Monitoring stations:

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