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C

Barron County Lake Quality

Wisconsin, 37 lakes, average grade C (Fair)

Barron County's 37 graded lakes fall in the moderate-density bracket for Wisconsin. The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. Barron County averages to a C. The distribution behind that average matters more than the letter: a few stressed lakes versus many decent ones can produce the same average as the inverse.

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. Beaver Dam Lake (A) is the cleanest in the county.

Reviewed by LakeQuality Editorial Team · Updated
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DNR Reports (16)

Wisconsin DNR Fisheries Survey resources for lakes in Barron County. Showing 12 most recent — browse all reports →

All Lakes in Barron County

RankLakeGradeClarityMax DepthPhosphorus
1Beaver Dam LakeA11 ft106 ft13 µg/L
2Silver LakeA13 ft91 ft12.5 µg/L
3Red Cedar LakeA10.1 ft53 ft17.4 µg/L
4Big Dummy LakeA12 ft54 ft16.4 µg/L
5Echo LakeA13 ft41 ft14.8 µg/L
6Little Dummy LakeA11 ft44 ft14.8 µg/L
7Bass LakeB9.7 ft14 ft17 µg/L
8Loon LakeB8.5 ft26 ft18.6 µg/L
9Sand LakeB13 ft-20 µg/L
10Lower Vermillion LakeB9 ft55 ft17.4 µg/L
11Horseshoe LakeB7.3 ft19 ft19.2 µg/L
12Big Moon Lake atB10 ft48 ft25.7 µg/L
13Bear LakeB6.2 ft87 ft17.5 µg/L
14Kirby LakeB7.5 ft19 ft24.4 µg/L
15Lake ThirtyB4.8 ft27 ft19.4 µg/L
16North LakeC5.5 ft21 ft22.7 µg/L
17Little Sand LakeC5 ft39 ft28.2 µg/L
18Moon LakeC-5 ft39.9 µg/L
19Granite Lake atC6 ft34 ft23.8 µg/L
20Poskin LakeC4 ft30 ft28.7 µg/L
21Rice LakeC4.1 ft19 ft31.5 µg/L
22Lake DesairC4 ft33 ft36.8 µg/L
23Upper Turtle LakeC4 ft25 ft41.2 µg/L
24Lower Turtle LakeC4 ft24 ft57 µg/L
25Lake MontanisD2 ft14 ft50.2 µg/L
26Crystal LakeD3.2 ft22 ft52.5 µg/L
27Granite Lake South BasinD6 ft34 ft-
28Pokegama LakeD4.5 ft19 ft-
29Lake of the Woods Barron Co. atD-55 ft63 µg/L
30Butternut LakeD2.3 ft15 ft67 µg/L
31Prairie LakeF2 ft16 ft-
32Mud LakeF2.3 ft15 ft-
33Tenmile LakeF2 ft12 ft-
34Staples LakeF2.6 ft-134 µg/L
35Upper Vermillion LakeF1.7 ft9 ft149 µg/L
36Prairie LakeF2.1 ft16 ft-
37Prairie LakeF2 ft16 ft-

Source: EPA National Aquatic Resource Surveys, 2026.