Oligotrophic Lakes in Wisconsin

916 oligotrophic lakes in Wisconsin. Low nutrients, clear water, excellent for swimming.

#	Lake	County	Grade	Clarity	Depth	TSI
1	Geneva Lake	Walworth	A	19 ft	135 ft	38
2	Lac Courte Oreilles Lake	Sawyer	A	38.7 ft	90 ft	34
3	Sunset Lake	Portage	A	41 ft	55 ft	32
4	Sunset Lake	Vilas	A	56.5 ft	30 ft	29
5	Grindstone Lake	Sawyer	A	57.7 ft	60 ft	32
6	Middle Sugarbush Lake	Vilas	A	50 ft	57 ft	31
7	Irving Lake	Vilas	A	36.1 ft	-	36
8	Windigo Lake	Sawyer	A	36.1 ft	51 ft	35
9	Towanda Lake	Vilas	A	34.5 ft	27 ft	33
10	Parker Lake	Adams	A	55.8 ft	36 ft	31
11	West Bay Lake	Vilas	A	27.9 ft	57 ft	29
12	West Bay Lake	Vilas	A	19.7 ft	23 ft	34
13	West Bay Lake	Vilas	A	42.7 ft	31 ft	34
14	Long Lake	Washburn	A	29.5 ft	-	37
15	Long Lake	Waushara	A	45.9 ft	71 ft	31
16	Long Lake	Waupaca	A	44.3 ft	76 ft	31
17	Long Lake	Burnett	A	68.9 ft	41 ft	28
18	Long Lake	Lincoln	A	47.7 ft	64 ft	31
19	Long Lake	Chippewa	A	32.8 ft	101 ft	34
20	Long Lake	Fond du Lac	A	32.8 ft	47 ft	37
21	Long Lake	Oneida	A	41 ft	58 ft	24
22	Long Lake	Bayfield	A	52.5 ft	28 ft	31
23	Long Lake	Waushara	A	19.7 ft	14 ft	34
24	Long Lake	Oconto	A	47.6 ft	-	30
25	Long Lake	Iron	A	18 ft	34 ft	35
26	Long Lake	Oneida	A	36.9 ft	31 ft	25
27	Chain Lake	Chippewa	A	16.4 ft	74 ft	37
28	Chain Lake	Oconto	A	44.3 ft	42 ft	30
29	Upper Eau Claire Lake	Bayfield	A	61.5 ft	92 ft	29
30	Spring Lake	Waushara	A	32.6 ft	37 ft	27
31	Spring Lake	Vilas	A	27.9 ft	16 ft	37
32	Spring Lake	Manitowoc	A	26.2 ft	23 ft	39
33	Spider Lake	Washburn	A	30 ft	-	28
34	Spider Lake	Vilas	A	36.9 ft	43 ft	34
35	Spider Lake	Sawyer	A	32.8 ft	64 ft	35
36	Spider Lake	Bayfield	A	18 ft	15 ft	35
37	Spider Lake	Iron	A	27.9 ft	-	36
38	Silver Lake	Waupaca	A	23 ft	17 ft	39
39	Silver Lake	Waukesha	A	36.9 ft	40 ft	32
40	Silver Lake	Waushara	A	33.6 ft	56 ft	35
41	Silver Lake	Kenosha	A	25.5 ft	44 ft	38
42	Silver Lake	Barron	A	42.7 ft	91 ft	32
43	Silver Lake	Washburn	A	39.4 ft	28 ft	24
44	Silver Lake	Waushara	A	49.2 ft	50 ft	32
45	Silver Lake	Vilas	A	39.9 ft	-	35
46	Silver Lake	Forest	A	42.7 ft	-	31
47	Wood Lake	Marquette	A	45.9 ft	53 ft	30
48	Pleasant Lake	Waushara	A	39.4 ft	24 ft	32
49	Pleasant Lake	Walworth	A	44.3 ft	29 ft	33
50	Lac la Belle Lake	Waukesha	A	16.4 ft	45 ft	40
51	Dead Pike Lake	Vilas	A	24.6 ft	80 ft	37
52	Ballard Lake	Vilas	A	49.2 ft	25 ft	32
53	Stella Lake	Oneida	A	26.2 ft	22 ft	36
54	Neligan Lake	Oconto	A	45.9 ft	23 ft	30
55	Balsam Lake	Washburn	A	31.2 ft	-	37
56	Spencer Lake	Waupaca	A	27.9 ft	53 ft	34
57	Birch Lake	Vilas	A	21.3 ft	45 ft	39
58	Birch Lake	Oneida	A	29.2 ft	27 ft	28
59	Leader Lake	Douglas	A	50.9 ft	56 ft	29
60	Shishebogama Lake	Oneida	A	32.8 ft	-	34
61	Goose Lake	Adams	A	26.2 ft	18 ft	38
62	Goose Lake	Burnett	A	23 ft	-	32
63	Jersey City Flowage Lake	Lincoln	A	16.4 ft	-	37
64	Wind Lake	Polk	A	32.8 ft	-	36
65	Round Lake	Forest	A	26.2 ft	-	30
66	Round Lake	Sawyer	A	68.2 ft	74 ft	30
67	Round Lake	Waushara	A	42.7 ft	-	23
68	Round Lake	Waupaca	A	49.2 ft	67 ft	21
69	Round Lake	Shawano	A	29.5 ft	39 ft	36
70	Round Lake	Polk	A	37.7 ft	26 ft	25
71	Round Lake	Oconto	A	49.2 ft	31 ft	31
72	Legend Lake	Menominee	A	32.8 ft	-	34
73	White River Flowage Lake	Waushara	A	28.3 ft	20 ft	37
74	Boulder Lake	Oconto	A	36.1 ft	-	33
75	Smoke Lake	Oconto	A	25 ft	-	36
76	Bass Lake	St. Croix	A	31.2 ft	-	35
77	Bass Lake	Bayfield	A	18.9 ft	43 ft	35
78	Bass Lake	Barron	A	32.8 ft	-	36
79	Bass Lake	Marinette	A	36.9 ft	65 ft	25
80	Bass Lake	Oconto	A	55.8 ft	40 ft	29
81	Bass Lake	Barron	A	36.1 ft	39 ft	25
82	Bass Lake	Washburn	A	52.5 ft	31 ft	30
83	Bass Lake	Lincoln	A	41 ft	40 ft	33
84	Bass Lake	Washburn	A	50.9 ft	35 ft	21
85	Bass Lake	Vilas	A	41 ft	-	35
86	Bass Lake	Waupaca	A	34.5 ft	-	26
87	Bass Lake	Florence	A	39.4 ft	-	32
88	Bass Lake	Price	A	28.9 ft	46 ft	35
89	Bass Lake	Oconto	A	19.7 ft	11 ft	39
90	Bass Lake	Oneida	A	26.2 ft	-	30
91	Bass Lake	Oneida	A	23 ft	-	32
92	Bass Lake	Oconto	A	-	25 ft	37
93	Long Lake Plainfield	Waushara	A	21.3 ft	14 ft	33
94	Hammil Lake	Bayfield	A	48.4 ft	47 ft	31
95	Weber Lake	Iron	A	36.1 ft	39 ft	25
96	Christner Lake	Sawyer	A	33.8 ft	-	36
97	Big Portage Lake	Vilas	A	62.3 ft	40 ft	29
98	Krohns Lake	Kewaunee	A	26.2 ft	38 ft	35
99	Bear Lake	Oneida	A	27.7 ft	20 ft	38
100	Bear Lake	Oconto	A	32.8 ft	20 ft	34

All oligotrophic lakes (MN+WI) →Minnesota version →All Wisconsin lakes →