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B

Forest County Lake Quality

Wisconsin, 34 lakes, average grade B (Good)

There are 34 graded lakes in Forest County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. With an average grade of B, Forest 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. Lake Lucerne (A) is the cleanest in the county.

Reviewed by LakeQuality Editorial Team · Updated
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DNR Reports (14)

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

All Lakes in Forest County

RankLakeGradeClarityMax DepthPhosphorus
1Lake LucerneA18.5 ft73 ft9.3 µg/L
2Lake MetongaA22 ft79 ft14 µg/L
3Butternut LakeA19.5 ft42 ft11.8 µg/L
4Franklin LakeA16 ft46 ft10.8 µg/L
5Arbutus LakeA15 ft28 ft10.7 µg/L
6Bug LakeA--10 µg/L
7Cloud LakeA-25 ft13 µg/L
8Silver LakeA13 ft20 ft11.5 µg/L
9Trump LakeA12 ft20 ft10.6 µg/L
10Roberts LakeA11.7 ft31 ft10.8 µg/L
11St. Johns LakeA10.2 ft21 ft14.8 µg/L
12Pickerel LakeB10 ft19 ft20.4 µg/L
13South Bay LakeB12 ft46 ft-
14Rice LakeB-6 ft22 µg/L
15Windfall LakeB10 ft25 ft21.2 µg/L
16Little Sand LakeB8 ft20 ft15.9 µg/L
17Walsh LakeB10 ft15 ft-
18Lily LakeB11 ft24 ft-
19Jungle LakeB10.5 ft14 ft-
20Luna LakeB9.6 ft35 ft5 µg/L
21Mole LakeB8.5 ft17 ft15.3 µg/L
22Little Long LakeB13.1 ft30 ft-
23Devil'S LakeB--22 µg/L
24Little Rice LakeB-10 ft22 µg/L
25Bear LakeB5.7 ft20 ft18.9 µg/L
26Crane LakeB7 ft25 ft22 µg/L
27Van Zile LakeB5.4 ft17 ft19.7 µg/L
28Bishop LakeB7 ft12 ft25 µg/L
29Pine LakeC4.8 ft15 ft28.2 µg/L
30Ludington Lake-Deep HoleC9.7 ft30 ft-
31Rice Lake NorthC-6 ft44 µg/L
32Rice Lake South SnailC-6 ft48 µg/L
33Howell LakeC-16 ft34 µg/L
34Kaine LakeC3.2 ft-22.8 µg/L

Source: EPA National Aquatic Resource Surveys, 2026.