What is the cleanest lake in Sudbury District County, Ontario?

Agnew Lake in Sudbury District County is the cleanest lake on the readings in Sudbury District County, Ontario with an EPA water-quality readings of — and 11 feet of 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; it is not the letter. Lakes without enough recent samples are UNRATED, not given an F. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in Sudbury District County, Ontario

Agnew Lake in Sudbury District County leads the rankings on measured clarity and nutrients and 11 ft of clarity. Below are the top 50 cleanest monitored lakes in Sudbury District County, Ontario, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Agnew Lake	Sudbury District	—	11 ft	6 µg/L	-
2	Akweskwa Lake	Sudbury District	—	3.6 ft	11.4 µg/L	-
3	Armstrong Lake	Sudbury District	—	15.1 ft	6.1 µg/L	-
4	Bear Lake	Sudbury District	—	6.6 ft	10 µg/L	-
5	Beaver Lakes	Sudbury District	—	7.4 ft	19.8 µg/L	-
6	Big Vermilion Lake	Sudbury District	—	19.7 ft	6.7 µg/L	-
7	Boulder Lake	Sudbury District	—	4.6 ft	10.7 µg/L	-
8	Broder Lake	Sudbury District	—	16.4 ft	5 µg/L	-
9	Carlyle Lake	Sudbury District	—	12.3 ft	5.7 µg/L	-
10	Deerfoot Lake	Sudbury District	—	4.9 ft	13 µg/L	-
11	Dixon Lake	Sudbury District	—	19.7 ft	4.7 µg/L	-
12	Edith Lake	Sudbury District	—	15.1 ft	26.2 µg/L	-
13	Ella Lake	Sudbury District	—	16.9 ft	11.8 µg/L	-
14	Fairbank Lake	Sudbury District	—	23 ft	4.9 µg/L	-
15	French River Lake	Sudbury District	—	9.2 ft	11.9 µg/L	-
16	Frenchman Lake	Sudbury District	—	22.1 ft	6.9 µg/L	-
17	Geneva Lake	Sudbury District	—	14.8 ft	5.9 µg/L	-
18	Griffin Lake	Sudbury District	—	14.8 ft	10.1 µg/L	-
19	Hanmer Lake	Sudbury District	—	14.8 ft	8.9 µg/L	-
20	Hannah Lake	Sudbury District	—	15.7 ft	4.9 µg/L	-
21	Hazen Lake	Sudbury District	—	10.2 ft	8.2 µg/L	-
22	Ironside Lake	Sudbury District	—	9.2 ft	5.6 µg/L	-
23	Ivanhoe Lake	Sudbury District	—	6.9 ft	10.1 µg/L	-
24	Joe Lake	Sudbury District	—	23 ft	4.2 µg/L	-
25	Kakakiwaganda Lake	Sudbury District	—	9.5 ft	9.6 µg/L	-
26	Kebsquasheshing R Lake	Sudbury District	—	9.8 ft	11.1 µg/L	-
27	Keith Lake	Sudbury District	—	3.9 ft	12 µg/L	-
28	Kukagami Lake	Sudbury District	—	23.6 ft	6.9 µg/L	-
29	La Cloche Lake	Sudbury District	—	8.9 ft	12.6 µg/L	-
30	Lang Lake	Sudbury District	—	13.8 ft	11.5 µg/L	-
31	Little Ella Lake	Sudbury District	—	9.2 ft	18.2 µg/L	-
32	Little Pogamasing Lake	Sudbury District	—	18.4 ft	6.5 µg/L	-
33	Lohi Lake	Sudbury District	—	21.2 ft	4.6 µg/L	-
34	Low Water Lake	Sudbury District	—	4.8 ft	10.9 µg/L	-
35	Lower French R Delta Lake	Sudbury District	—	8.9 ft	13.6 µg/L	-
36	Makada Lake	Sudbury District	—	16.7 ft	8.1 µg/L	-
37	Maple Lake	Sudbury District	—	15.4 ft	7.3 µg/L	-
38	Marquette Lake	Sudbury District	—	4.9 ft	10.9 µg/L	-
39	Matagamasi Lake	Sudbury District	—	20.8 ft	4.4 µg/L	-
40	Mcfarlane Lake	Sudbury District	—	13.6 ft	10.3 µg/L	-
41	Mesomikenda Lake	Sudbury District	—	8.4 ft	6.5 µg/L	-
42	Minisinakwa Lake	Sudbury District	—	5.9 ft	14.4 µg/L	-
43	Ministic Lake	Sudbury District	—	13.5 ft	10.8 µg/L	-
44	Minnow Lake	Sudbury District	—	4.3 ft	23.3 µg/L	-
45	Nelson Lake	Sudbury District	—	26.2 ft	2.8 µg/L	-
46	Nepahwin Lake	Sudbury District	—	12.1 ft	14.5 µg/L	-
47	Nepewassi Lake	Sudbury District	—	6.6 ft	13.9 µg/L	-
48	Onaping Lake	Sudbury District	—	11.8 ft	5.6 µg/L	-
49	Panache Lake	Sudbury District	—	16.4 ft	6.5 µg/L	-
50	Paudash Lake	Sudbury District	—	6.4 ft	6.5 µg/L	-

Ranked List

More Answers for Sudbury District County, Ontario