Is Golden City Lake safe to swim in?

Good for swimming, clear water with low algae levels. Golden City 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

Golden City Lake

Grade B — Good

Mesotrophic

Golden City Lake in Muskoka District, Ontario received a water quality grade of B (Good). Water clarity: 2 m visibility. Phosphorus: 12.8 µg/L.

Clarity: 2 m
Type: Mesotrophic

Where to stay →Safe to swim?

Golden City Lake is a mesotrophic lake in Muskoka District County, Ontario. Water quality is graded B based on 2 sampling years through 2004. Compared to the 169 other monitored lakes in Muskoka District County, Golden City Lake ranks #138 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2004-06-02. 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 6.6 ft. Phosphorus level: 12.8 µg/L. Trophic State Index: 45.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2 m	D
Phosphorus	12.8 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	45	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Golden City Lake

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Fishing Golden City Lake

→ Golden City Lake fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #138 of 170 lakes in Muskoka District

Cleaner Lakes Within 30 Miles

Golden City Lake holds Grade B. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Muskoka District

Explore Golden City 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

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Top 25 by overall water quality score

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Grade A/B + low algae filter

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Panfish-rich, public access

All Ontario lakes

Full state directory

Other Grade B Lakes in Ontario

Buck Lake

Parry Sound District · 1.8 m

Round Lake

Parry Sound District · 3.5 m

Bear Lake

Parry Sound District · 2.5 m

Doe Lake

Parry Sound District · 2.3 m

Bartlett Lake

Parry Sound District · 2.5 m

Middle Doe Lake

Parry Sound District · 1.5 m

Mesotrophic Lakes in Ontario

Buck Lake Fawn Lake Round Lake Bear Lake

More records, surveys & data sources

Where this data comes from

Measurements for Golden City 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: 2004-06-02

Monitoring stations:

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