Lakes / Wisconsin / Largest Lakes in Wisconsin

Largest Lakes in Wisconsin

Ranked by surface area, from Wisconsin DNR lake data. Flowages and reservoirs count here - size is size - and each is labeled in its own record.

#	Lake	County	Surface Area	Max Depth
1	Lake Winnebago	Winnebago, Fond du Lac, Calumet	131,939 acres	21 ft
2	Lake Pepin	Pierce, Buffalo, Pepin	24,550 acres	60 ft
3	Petenwell Lake	Adams, Wood, Juneau	23,173 acres	44 ft
4	Lake Chippewa	Sawyer	14,593 acres	92 ft
5	Lake Poygan	Winnebago, Waushara	14,024 acres	11 ft
6	Castle Rock Lake	Adams, Juneau	13,955 acres	35 ft
7	Turtle Flambeau Flowage	Iron	12,942 acres	50 ft
8	Lake Koshkonong	Jefferson, Dane, Rock	10,595 acres	7 ft
9	Lake Mendota	Dane	9,781 acres	83 ft
10	Lake Butte des Morts	Winnebago	8,581 acres	9 ft
11	Lake Onalaska	La Crosse	8,391 acres	40 ft
12	Green Lake	Green Lake	7,920 acres	236 ft
13	Lake Saint Croix	Pierce, St. Croix	7,696 acres	60 ft
14	Lake Wisconsin	Columbia, Sauk	7,197 acres	24 ft
15	Beaver Dam Lake	Dodge	6,718 acres	7 ft
16	Big Eau Pleine Reservoir	Marathon	6,348 acres	46 ft
17	Shawano Lake	Shawano	6,215 acres	39.5 ft
18	Lake Wissota	Chippewa	6,148 acres	64.4 ft
19	Geneva Lake	Walworth	5,401 acres	135 ft
20	Lac Courte Oreilles	Sawyer	5,139 acres	90 ft
21	Puckaway Lake	Marquette, Green Lake	5,013 acres	5 ft
22	Sturgeon Bay	Door	4,945 acres	None ft
23	Lake Du Bay	Portage, Marathon	4,649 acres	30 ft
24	Lake Winneshiek	Crawford	4,635 acres	None ft
25	Lake Winneconne	Winnebago	4,553 acres	9 ft
26	Willow Flowage	Oneida	4,217 acres	30 ft
27	Lac Vieux Desert	Vilas	4,017 acres	38 ft
28	Trout Lake	Vilas	3,864 acres	117 ft
29	Pelican Lake	Oneida	3,545 acres	39 ft
30	Fence Lake	Vilas	3,483 acres	86 ft
31	Long Lake	Washburn	3,478 acres	74 ft
32	Tomahawk Lake	Oneida	3,462 acres	84 ft
33	Lake Monona	Dane	3,359 acres	74 ft
34	Round Lake	Sawyer	3,294 acres	74 ft
35	Lake Kegonsa	Dane	3,200 acres	32 ft
36	Grindstone Lake	Sawyer	3,176 acres	60 ft
37	Rainbow Flowage	Oneida	3,153 acres	28 ft
38	Gile Flowage	Iron	3,138 acres	25 ft
39	Sinissippi Lake (Hustisford)	Dodge	3,078 acres	8 ft
40	Namekagon Lake	Bayfield	2,897 acres	51 ft
41	Holcombe Flowage	Rusk, Chippewa	2,881 acres	62 ft
42	Twin Lakes (North)	Vilas	2,871 acres	60 ft
43	Rush Lake	Fond du Lac, Winnebago	2,729 acres	5 ft
44	Nelson Lake	Sawyer	2,716 acres	33 ft
45	Fox Lake	Dodge	2,713 acres	19 ft
46	Shell Lake	Washburn	2,513 acres	36 ft
47	Wisconsin R Fl C3-Stevens Pt	Portage	2,489 acres	25 ft
48	Pewaukee Lake	Waukesha	2,437 acres	45 ft
49	Lake Chetac	Sawyer	2,400 acres	26 ft
50	Lake Noquebay	Marinette	2,398 acres	51 ft
51	Chequamegon Waters Flowage	Taylor	2,366 acres	22 ft
52	Yellow Lake	Burnett	2,283 acres	31 ft
53	Lake Nokomis	Oneida, Lincoln	2,274 acres	33 ft
54	St Croix Flowage	Douglas	2,247 acres	28 ft
55	Big Muskego Lake	Waukesha	2,194 acres	23 ft
56	Biron Flowage	Wood, Portage	2,187 acres	23 ft
57	Buffalo Lake	Marquette	2,179 acres	8 ft
58	Lake Waubesa	Dane	2,074 acres	38 ft
59	Metonga Lake	Forest	2,038 acres	79 ft
60	Delavan Lake	Walworth	1,906 acres	52 ft
61	Balsam Lake	Polk	1,901 acres	37 ft
62	Red Cedar Lake	Washburn, Barron	1,897 acres	53 ft
63	Dairyland Reservoir (Flambeau)	Rusk	1,870 acres	70 ft
64	Lake Wausau	Marathon	1,851 acres	30 ft
65	Thunder Lake	Oneida	1,794 acres	9 ft
66	Pine Lake	Forest	1,673 acres	15 ft
67	Bone Lake	Polk	1,667 acres	43 ft
68	Big Saint Germain Lake	Vilas	1,622 acres	42 ft
69	Tainter Lake	Dunn	1,605 acres	37 ft
70	Minong Flowage	Washburn, Douglas	1,587 acres	21 ft
71	Moose Lake	Sawyer	1,559 acres	21 ft
72	Lake Mohawksin	Lincoln	1,515 acres	25 ft
73	Crawling Stone Lake	Vilas	1,483 acres	87 ft
74	High Falls Reservoir	Marinette	1,471 acres	54 ft
75	Grand River Marsh*	Green Lake, Marquette	1,446 acres	7 ft
76	Lake Alice	Lincoln	1,438 acres	32 ft
77	Big Sand Lake	Burnett	1,434 acres	55 ft
78	Big Sand Lake	Vilas	1,427 acres	56 ft
79	Ike Walton Lake	Vilas	1,417 acres	61 ft
80	Prairie Lake	Barron	1,408 acres	16 ft
81	Rhinelander Flowage	Oneida	1,372 acres	10 ft
82	Rock Lake	Jefferson	1,365 acres	60 ft
83	Bear Lake	Washburn, Barron	1,348 acres	87 ft
84	Minocqua Lake	Oneida	1,339 acres	60 ft
85	Clam Lake	Burnett	1,338 acres	11 ft
86	Squirrel Lake	Vilas, Oneida	1,309 acres	46 ft
87	Pickerel Lake	Langlade, Forest	1,272 acres	19 ft
88	Lost Land Lake	Sawyer	1,264 acres	21 ft
89	Lake Owen	Bayfield	1,250 acres	95 ft
90	Butternut Lake	Forest	1,246 acres	42 ft
91	Spirit River Flowage	Lincoln	1,220 acres	25 ft
92	Star Lake	Vilas	1,219 acres	68 ft
93	Okauchee Lake	Waukesha	1,210 acres	90 ft
94	Little Rice Lake	Forest	1,201 acres	10 ft
95	Little Lake Butte Des Morts	Winnebago	1,200 acres	18 ft
96	Spider Lake	Sawyer	1,194 acres	64 ft
97	Wapogasset Lake	Polk	1,189 acres	32 ft
98	Partridge Lake	Waupaca	1,185 acres	4 ft
99	White Sand Lake	Vilas	1,181 acres	63 ft
100	Flambeau Lake	Vilas	1,166 acres	78 ft

Showing the top 100 of 1,227 counted lakes. Search above, or browse by county on the Wisconsin page, for the full inventory.

Source: Wisconsin DNR lake data. Verified October 28, 2026. New lakes are added as their DNR records are verified - rankings update with every addition.