What is the cleanest lake in Grey County, Ontario?

Bass Lake in Grey County has the cleanest nutrient and algae readings in Grey County, Ontario, with 12.5 feet of measured water clarity.

How are these rankings calculated?

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.

Cleanest Lakes in Grey County, Ontario

Bass Lake in Grey County leads the rankings on measured clarity and nutrients and 12.5 ft of clarity. Below are the top 11 cleanest monitored lakes in Grey County, Ontario, ranked on EPA nutrient and algae measurements.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Bass Lake	Grey	12.5 ft	5.3 µg/L	-
2	Boyd Lake	Grey	8.2 ft	13.4 µg/L	-
3	Brewster'S Lake	Grey	13.8 ft	9.2 µg/L	-
4	Eugenia Lake	Grey	9.8 ft	8.3 µg/L	-
5	Francis Lake	Grey	8.2 ft	9 µg/L	-
6	Habermehl Lake	Grey	9.5 ft	11.9 µg/L	-
7	Mccullough Lake	Grey	13.1 ft	7.4 µg/L	-
8	North Louise Lake	Grey	11.5 ft	9.3 µg/L	-
9	Wilder Lake	Grey	13 ft	8.1 µg/L	-
10	Williams Lake	Grey	5.6 ft	4.9 µg/L	-
11	Mountain Lake	Grey	10.8 ft	11.7 µg/L	-

Ranked List

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