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LakeQuality
RankLakeCountyStateClarityDepth
1Lobster LakeDouglasMN13 ft65 ft
2East Fox LakeCrow WingMN16.4 ft65 ft
3Deep Portage LakeCassMN15.4 ft105 ft
4Clearwater LakeWrightMN9.8 ft73 ft
5Clearwater LakeCrow WingMN13 ft54 ft
6Clearwater LakeClearwaterMN10 ft65 ft
7Lower Hay LakeCrow WingMN18.5 ft100 ft
8Latoka LakeDouglasMN19 ft108 ft
9Little Birch LakeToddMN13 ft89 ft
10North Long LakeCrow WingMN15.1 ft97 ft
11Bad Medicine LakeBeckerMN25 ft84 ft
12Mud LakeBeckerMN12.5 ft34 ft
13Big LakeBeltramiMN9.7 ft35 ft
14Big LakeSherburneMN13.6 ft48 ft
15Big LakeSt. LouisMN8.2 ft22 ft
16Big Sugar Bush LakeBeckerMN16.5 ft42 ft
17Pelican LakeOtter TailMN16.4 ft55 ft
18Pelican LakeCrow WingMN14.3 ft104 ft
19Birch LakeCassMN14 ft45 ft
20Round LakeAitkinMN14.5 ft125 ft
21Round LakeCrow WingMN13.5 ft51 ft
22Round LakeCookMN16.5 ft45 ft
23Round LakeBeckerMN10 ft69 ft
24Ada LakeCassMN14 ft60 ft
25Pike LakeCookMN17.4 ft45 ft
26Whitefish LakeCrow WingMN14.4 ft138 ft
27Whitefish LakeBeltramiMN12.5 ft30 ft
28Horseshoe LakeCrow WingMN14.4 ft56 ft
29Farm LakeLakeMN5.5 ft56 ft
30Washburn LakeCassMN14.1 ft111 ft
31Long LakeKandiyohiMN10.5 ft46 ft
32Long LakeClearwaterMN20.5 ft80 ft
33Long LakeCassMN21.5 ft115 ft
34Long LakeBeltramiMN20 ft87 ft
35Long LakeOtter TailMN12.3 ft128 ft
36Long LakeBeckerMN19.5 ft61 ft
37Long LakeHubbardMN11.2 ft135 ft
38Long LakeOtter TailMN11.6 ft73 ft
39Long LakeItascaMN16.9 ft85 ft
40Dead LakeHubbardMN16 ft34 ft
41Dead LakeOtter TailMN10.2 ft65 ft
42Unnamed LakeNicolletMN5.6 ft35 ft
43Maple LakeDouglasMN14.1 ft78 ft
44Maple LakeItascaMN15.3 ft39 ft
45West Twin LakeCookMN9.8 ft37 ft
46Shallow LakeItascaMN16.4 ft85 ft
47Shallow LakeHubbardMN8.2 ft10 ft
48Trout LakeItascaMN18 ft157 ft
49Detroit LakeBeckerMN14 ft89 ft
50South Sturgeon LakeSt. LouisMN2.5 ft43 ft

Why Water Quality Matters for Walleye

Walleye prefer lakes with moderate water clarity, clear enough for adequate dissolved oxygen but not so clear that they lose their low-light hunting advantage. Walleye are sensitive to high phosphorus and algae levels, which deplete oxygen in deeper water where walleye seek cool temperatures in summer.

Lakes with clear, low-nutrient readings tend to maintain the oxygen levels and water temperatures that walleye need year-round. Lakes with high phosphorus and heavy algae often experience summer oxygen depletion in deeper water, stressing or killing walleye. For the official marks those waters produced, see state record fish — including the Minnesota walleye record and the Wisconsin list.

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