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LakeQuality

Cleanest Lakes in Cook County, Minnesota

Clearwater Lake in Cook County leads the rankings with a water quality grade of A and 30 ft of clarity. Below are the top 50 cleanest monitored lakes in Cook County, Minnesota, ranked by EPA water quality score.

Ranked List

#LakeCountyGradeClarityPhosphorusAlgae
1Clearwater LakeCookA30 ft4 µg/L-
2Birch LakeCookA18 ft8 µg/L-
3Round LakeCookA16.5 ft8.5 µg/L-
4Pike LakeCookA17.8 ft6 µg/L-
5Trout LakeCookA19 ft9 µg/L-
6Gull LakeCookA16.4 ft9 µg/L-
7Hungry Jack LakeCookA18 ft7 µg/L-
8Mayhew LakeCookA20.6 ft5 µg/L-
9Loon LakeCookA18 ft5 µg/L-
10Flour LakeCookA18.5 ft7 µg/L-
11Bearskin LakeCookA21.3 ft6 µg/L-
12Su18 LakeCookA38.7 ft-0.5 µg/L
13Mcfarland LakeCookA17 ft9 µg/L-
14Su19 LakeCookA37.7 ft-0.7 µg/L
15Little Gunflint LakeCookA16.2 ft7 µg/L-
16Superior LakeCookA15.1 ft4 µg/L-
17Taylor Lake DeepCookA10.6 ft13 µg/L3.5 µg/L
18Trout Lake DeepCookA10.7 ft9.7 µg/L4.4 µg/L
19Poplar LakeCookA10.2 ft10 µg/L-
20Sea Gull LakeCookA14.5 ft7 µg/L-
21Two Island LakeCookA10.5 ft14 µg/L-
22Saganaga LakeCookA12 ft7 µg/L-
23Greenwood LakeCookA14.8 ft8 µg/L-
24Gogebic LakeCookA13.8 ft5 µg/L-
25Alder LakeCookA13.8 ft8 µg/L-
26West Twin LakeCookB9.8 ft9 µg/L-
27Portage LakeCookB8.5 ft9.5 µg/L-
28Caribou LakeCookB7 ft15 µg/L-
29Devil Track LakeCookB7 ft12.5 µg/L-
30Deer Yard LakeCookB7.5 ft15 µg/L-
31Tom LakeCookB9 ft8 µg/L-
32Tait LakeCookB7.1 ft12.5 µg/L-
33Ball Club LakeCookB9.5 ft16.5 µg/L-
34Clara LakeCookB7.6 ft15 µg/L-
35Dick LakeCookB7.7 ft10 µg/L-
36Chevans Lake DeepCookB1.9 ft17.5 µg/L4.6 µg/L
37Little Lake DeepCookB-324.8 ft14 µg/L3.9 µg/L
38North Lake DeepCookB-324.8 ft7.7 µg/L2.9 µg/L
39Rice LakeCookB5.7 ft17 µg/L-
40East Twin LakeCookB6.2 ft17 µg/L-
41Elbow LakeCookB3.7 ft19 µg/L-
42Ward LakeCookB5.6 ft16.5 µg/L-
43Ella LakeCookB6 ft4 µg/L-
44Missouri LakeCookB4.1 ft11 µg/L-
45Turtle Lake DeepCookC-324.8 ft22 µg/L2 µg/L
46Teal Lake DeepCookC3.3 ft15.5 µg/L5.7 µg/L
47Loon Lake DeepCookC-324.8 ft23 µg/L7.6 µg/L
48Dyers LakeCookC4.9 ft21.5 µg/L-
49Swamp Lake DeepCookC1.7 ft27 µg/L9.2 µg/L
50Mt Maud LakeCookC3.4 ft34 µg/L16.8 µg/L

More Answers for Cook County, Minnesota