Question 1

Cleanest Lakes in Golden Horseshoe County, Ontario?

Accepted Answer

Erie Lake in Golden Horseshoe County leads the rankings on measured clarity and nutrients and 20.7 ft of clarity. Below are the top 2 cleanest monitored lakes in Golden Horseshoe County, Ontario, ranked on EPA nutrient and algae measurements.

Question 2

What is the cleanest lake in Golden Horseshoe County, Ontario?

Accepted Answer

Erie Lake in Golden Horseshoe County has the cleanest nutrient and algae readings in Golden Horseshoe County, Ontario, with 20.7 feet of measured water clarity.

Question 3

How are these rankings calculated?

Accepted Answer

Nutrients and algae, total phosphorus, nitrogen, chlorophyll-a and turbidity, are read against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown separately. Lakes without enough recent samples are listed without a condition class rather than ranked low. Source data comes from the EPA Water Quality Portal.

#	Lake	County	Clarity	Phosphorus	Algae
1	Erie Lake	Golden Horseshoe	20.7 ft	8.1 µg/L	-
2	Grenadier Pond	Golden Horseshoe	3.3 ft	63.1 µg/L	-

Cleanest Lakes in Golden Horseshoe County, Ontario

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