Is G Ross Lord Reservoir safe to swim in?

Avoid swimming, very poor water quality, potential algae toxins. G Ross Lord Reservoir has an overall water quality grade of F. Always check local health department advisories before swimming.

Golden Horseshoe County, Ontario · Water Quality Report Card

G Ross Lord Reservoir

Grade F — Very Poor

Limited DataHypereutrophic

G Ross Lord Reservoir in Golden Horseshoe, Ontario received a water quality grade of F (Very Poor). Water clarity: 0.4 m visibility.

Clarity: 0.4 m
Type: Hypereutrophic

Where to stay →Safe to swim?

G Ross Lord Reservoir is a highly nutrient-loaded hypereutrophic lake in Golden Horseshoe County, Ontario. Water quality is graded F based on 1 sampling years through 1995. Compared to the 2 other monitored lakes in Golden Horseshoe County, G Ross Lord Reservoir ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 1995-10-23. Grade methodology: LakeGrade methodology.

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Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Compare the safest swimming lakes near Rochester →

Water Quality Grade: F, Very Poor

Very murky, less than 1.3 ft of visibility. Trophic State Index: 73.

Metric	Value	Grade
Water Clarity (Secchi Depth)	0.4 m	F
Phosphorus	No data
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	73	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Where to stay near G Ross Lord Reservoir

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Fishing G Ross Lord Reservoir

→ G Ross Lord Reservoir fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #3 of 3 lakes in Golden Horseshoe

Cleaner Lakes Within 30 Miles

G Ross Lord Reservoir holds Grade F. 5 nearby lakes hold higher grades.

Nearby Lakes in Golden Horseshoe

Claireville Reservoir

Explore G Ross Lord Reservoir across LakeGrade

Lake Fishing Forecast

Species activity outlook by water temperature and season

Hypereutrophic Lakes

Very high nutrients, dense algae, poor clarity

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Other Grade F Lakes in Ontario

Claireville Reservoir

Peel Region · 0.5 m

Alder Lake

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Utim Lake

Nipissing District · 0.8 m

Ouellet Lake

Cochrane District · 0.8 m

Clay Lake

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Slim Lake

Kenora District · 0.8 m

Hypereutrophic Lakes in Ontario

Claireville Reservoir Alder Lake Abitibi Lake

More records, surveys & data sources

Where this data comes from

Measurements for G Ross Lord Reservoir 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: 1995-10-23

Monitoring stations:

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