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LakeQuality
B

Polk County Lake Quality

Wisconsin, 77 lakes, average grade B (Good)

Polk County in Wisconsin carries 77 graded lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. With an average grade of B, Polk County sits comfortably above the Wisconsin median.

Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Wind Lake (A) is the cleanest in the county.

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DNR Reports (8)

Wisconsin DNR Fisheries Survey resources for lakes in Polk County. browse all reports →

All Lakes in Polk County

RankLakeGradeClarityMax DepthPhosphorus
1Wind LakeA32.8 ft-17.2 µg/L
2Round LakeA37.7 ft26 ft-
3Pine LakeA42.7 ft34 ft13.5 µg/L
4Sand LakeA65.6 ft--
5Diamond LakeA27.1 ft--
6Clear LakeA50.9 ft26 ft13.9 µg/L
7Crescent LakeA26.2 ft43 ft17.4 µg/L
8Deer LakeA49.2 ft46 ft16.9 µg/L
9North Twin LakeA-27 ft10.1 µg/L
10Lamont LakeA39.4 ft28 ft-
11Church Pine LakeA42.7 ft45 ft13.5 µg/L
12Swede LakeA44.3 ft32 ft-
13South Twin LakeA32.8 ft-11.7 µg/L
14Pipe LakeA37.7 ft68 ft14.5 µg/L
15Vincent LakeA16.4 ft15 ft-
16Pike LakeA-33 ft13.4 µg/L
17Half Moon LakeA50 ft60 ft13.9 µg/L
18Bridget LakeA16.4 ft--
19Margaret LakeA50.9 ft-10.8 µg/L
20Dahl LakeA30 ft--
21Poplar LakeA44 ft--
22Godfrey LakeA26.2 ft--
23Freedom LakesA31.2 ft-19.9 µg/L
24Paulsen LakeA39.4 ft-12.7 µg/L
25Antler LakeA43.9 ft22 ft15 µg/L
26Moccasin LakeA32.4 ft31 ft-
27Sandhill LakeA27.1 ft-19.2 µg/L
28Lower Pine LakeA68.9 ft102 ft9.2 µg/L
29Long LakeA16.4 ft44 ft27.7 µg/L
30Big LakeA29.5 ft24 ft21.6 µg/L
31Bone LakeA24.6 ft43 ft20.2 µg/L
32Horseshoe LakeA27.9 ft-22.5 µg/L
33Lost LakeA19.7 ft-25.4 µg/L
34Clarey LakeA13.9 ft-18.8 µg/L
35Bear Trap LakeA29.5 ft25 ft24.9 µg/L
36Ward LakeA19.7 ft43 ft22.4 µg/L
37Loveless LakeA27.1 ft20 ft28.9 µg/L
38Unnamed LakeA16.4 ft-22.4 µg/L
39Mckenzie LakeA23 ft25 ft26 µg/L
40King LakeA37.7 ft-20.6 µg/L
41Ember LakeA27.1 ft-20.2 µg/L
42Dinger LakeA20.5 ft-22 µg/L
43Balsam LakeA42.7 ft37 ft23.4 µg/L
44Rice LakeB14.8 ft10 ft25.4 µg/L
45Balsam LakeB7.4 ft-15.2 µg/L
46Camelia LakeB18 ft-32.6 µg/L
47Horse LakeB11.5 ft11 ft-
48North White Ash LakeB16 ft9 ft59.1 µg/L
49Mud LakeB13.9 ft15 ft24.7 µg/L
50Black Brook Flowage LakeB20.5 ft-46.6 µg/L
51Wapogasset LakeB18.9 ft32 ft30.6 µg/L
52Balsam Lake Little Balsam SiteB18.9 ft37 ft42.7 µg/L
53Little Bass LakeB18 ft-37.8 µg/L
54Clam Falls Flowage LakeB14.8 ft--
55Little Butternut LakeB13.1 ft23 ft-
56Pogo LakeB16.4 ft-38.2 µg/L
57Dace LakeB--21.3 µg/L
58Magnor LakeB11.9 ft26 ft57.7 µg/L
59Apple River Flowage LakeB18 ft18 ft78.5 µg/L
60Little Blake LakeB11.5 ft14 ft43.8 µg/L
61Omer LakeB16.4 ft-66.6 µg/L
62Long LakeC5.9 ft17 ft26.1 µg/L
63North Pipe LakeC6.2 ft37 ft29.3 µg/L
64Big Butternut LakeC14.8 ft19 ft62.1 µg/L
65Mud LakeC16.8 ft-129 µg/L
66Big Blake LakeC9.8 ft14 ft59.5 µg/L
67Largon LakeC8.2 ft10 ft55.8 µg/L
68Big Round LakeC5.6 ft17 ft27.6 µg/L
69Cedar LakeC6.2 ft32 ft42.3 µg/L
70White Ash LakeC9.8 ft9 ft68.2 µg/L
71Long Trade LakeC9.8 ft13 ft87.6 µg/L
72Unnamed LakeD5.4 ft--
73Lotus LakeD6.6 ft15 ft-
74Alabama LakeD5.7 ft28 ft70.8 µg/L
75Big Round Deep Hole South LakeD4.9 ft17 ft-
76Gibson LakeD-12 ft60.3 µg/L
77Mud LakeD6.6 ft12 ft93 µg/L

Source: EPA National Aquatic Resource Surveys, 2026.