WI · ranked by public data

The 12 Biggest Lakes in Washington County, Wisconsin

12 Washington County lakes cover at least 50 acres, out of 54 documented lakes in the county. Updated July 2026.

1937 ac
937 acres
Washington County, WI
Cedar Lake
enhancedDepth mapStockedAIS recordedWater data
43.38, -88.26937 acres | 105 ft max3 public access pointsLargemouth Bass, Northern Pike
937 acres · 105 ft max depth · 3 public landings
2461 ac
461 acres
Washington County, WI
Pike Lake
enhancedDepth mapWater data
43.31, -88.33461 acres | 45 ft max5 public access pointsWalleye, Largemouth Bass
461 acres · 45 ft max depth · 5 public landings
3260 ac
260 acres
Washington County, WI
Little Cedar Lake
enhancedDepth mapStockedWater data
43.38, -88.23260 acres | 56 ft max1 public access pointLargemouth Bass, Panfish
260 acres · 56 ft max depth · 1 public landing
4122 ac
122 acres
Washington County, WI
Druid Lake
enhancedDepth mapWater data
43.28, -88.41122 acres | 53 ft max1 public access pointPanfish, Largemouth Bass
122 acres · 53 ft max depth · 1 public landing
5121 ac
121 acres
Washington County, WI
Friess Lake
enhancedDepth mapWater data
43.24, -88.28121 acres | 48 ft max0 public access pointsLargemouth Bass, Northern Pike
121 acres · 48 ft max depth · No verified public access
6104 ac
104 acres
Washington County, WI
Lake Five
enhancedDepth mapWater data
43.20, -88.27104 acres | 23 ft max0 public access pointsLargemouth Bass, Northern Pike
104 acres · 23 ft max depth · No verified public access
785 ac
85 acres
Washington County, WI
Smith Lake
enhancedDepth mapWater data
43.47, -88.1985 acres | 5 ft max2 public access pointsLargemouth Bass, Panfish
85 acres · 5 ft max depth · 2 public landings
870 ac
70 acres
Washington County, WI
Green Lake
enhancedDepth mapStockedWater data
43.46, -88.1070 acres | 37 ft max2 public access pointsLargemouth Bass, Panfish
70 acres · 37 ft max depth · 2 public landings
969 ac
69 acres
Washington County, WI
Lucas Lake
enhancedDepth mapWater data
43.41, -88.2169 acres | 15 ft max0 public access pointsLargemouth Bass, Northern Pike
69 acres · 15 ft max depth · No verified public access
1065 ac
65 acres
Washington County, WI
Bark Lake
enhancedDepth mapWater data
43.22, -88.2165 acres | 34 ft max0 public access pointsLargemouth Bass, Northern Pike
65 acres · 34 ft max depth · No verified public access

Rank	Lake	County	Acres	Max depth	Public access
11	Barton Pond	Washington	63 ac	5 ft	—
12	Wallace Lake	Washington	54 ac	35 ft	1 landing

Methodology

How this list is built

Ranked strictly by documented surface acres from DNR lake records.
Flowages and reservoirs count — they are lakes in the DNR's books, and some of the state's biggest water is impounded.
Lakes without documented acreage are excluded rather than estimated.
Lakes under 50 acres — or without documented acreage — are excluded from rankings.
Public access is shown for every lake but never affects the ranking.

FAQ

Washington County lake records

What is the biggest lake in Washington County?

Cedar Lake — Cedar Lake in Washington County is the biggest lake in Washington County, at 937 acres.

Biggest lakes statewide Deepest lakes in Washington County Clearest lakes in Washington County Lakes with the most public access in Washington County All Washington County lakes

Source data: Wisconsin DNR lake and monitoring records as aggregated by LakeList. Figures reflect the most recent documented values, not new surveys — verify access and rules before you go. Lake outlines are shoreline shapes from LakeList and the USGS National Hydrography Dataset; they illustrate a lake's form and are not depth or navigation charts.

WI · ranked by public data

The 12 Biggest Lakes in Washington County, Wisconsin

12 Washington County lakes cover at least 50 acres, out of 54 documented lakes in the county. Updated July 2026.

1937 ac
937 acres
Washington County, WI
Cedar Lake
enhancedDepth mapStockedAIS recordedWater data
43.38, -88.26937 acres | 105 ft max3 public access pointsLargemouth Bass, Northern Pike
937 acres · 105 ft max depth · 3 public landings
2461 ac
461 acres
Washington County, WI
Pike Lake
enhancedDepth mapWater data
43.31, -88.33461 acres | 45 ft max5 public access pointsWalleye, Largemouth Bass
461 acres · 45 ft max depth · 5 public landings
3260 ac
260 acres
Washington County, WI
Little Cedar Lake
enhancedDepth mapStockedWater data
43.38, -88.23260 acres | 56 ft max1 public access pointLargemouth Bass, Panfish
260 acres · 56 ft max depth · 1 public landing
4122 ac
122 acres
Washington County, WI
Druid Lake
enhancedDepth mapWater data
43.28, -88.41122 acres | 53 ft max1 public access pointPanfish, Largemouth Bass
122 acres · 53 ft max depth · 1 public landing
5121 ac
121 acres
Washington County, WI
Friess Lake
enhancedDepth mapWater data
43.24, -88.28121 acres | 48 ft max0 public access pointsLargemouth Bass, Northern Pike
121 acres · 48 ft max depth · No verified public access
6104 ac
104 acres
Washington County, WI
Lake Five
enhancedDepth mapWater data
43.20, -88.27104 acres | 23 ft max0 public access pointsLargemouth Bass, Northern Pike
104 acres · 23 ft max depth · No verified public access
785 ac
85 acres
Washington County, WI
Smith Lake
enhancedDepth mapWater data
43.47, -88.1985 acres | 5 ft max2 public access pointsLargemouth Bass, Panfish
85 acres · 5 ft max depth · 2 public landings
870 ac
70 acres
Washington County, WI
Green Lake
enhancedDepth mapStockedWater data
43.46, -88.1070 acres | 37 ft max2 public access pointsLargemouth Bass, Panfish
70 acres · 37 ft max depth · 2 public landings
969 ac
69 acres
Washington County, WI
Lucas Lake
enhancedDepth mapWater data
43.41, -88.2169 acres | 15 ft max0 public access pointsLargemouth Bass, Northern Pike
69 acres · 15 ft max depth · No verified public access
1065 ac
65 acres
Washington County, WI
Bark Lake
enhancedDepth mapWater data
43.22, -88.2165 acres | 34 ft max0 public access pointsLargemouth Bass, Northern Pike
65 acres · 34 ft max depth · No verified public access

Rank	Lake	County	Acres	Max depth	Public access
11	Barton Pond	Washington	63 ac	5 ft	—
12	Wallace Lake	Washington	54 ac	35 ft	1 landing

Methodology

How this list is built

Ranked strictly by documented surface acres from DNR lake records.
Flowages and reservoirs count — they are lakes in the DNR's books, and some of the state's biggest water is impounded.
Lakes without documented acreage are excluded rather than estimated.
Lakes under 50 acres — or without documented acreage — are excluded from rankings.
Public access is shown for every lake but never affects the ranking.

FAQ

Washington County lake records

What is the biggest lake in Washington County?

Cedar Lake — Cedar Lake in Washington County is the biggest lake in Washington County, at 937 acres.

Biggest lakes statewide Deepest lakes in Washington County Clearest lakes in Washington County Lakes with the most public access in Washington County All Washington County lakes

The 12 Biggest Lakes in Washington County, Wisconsin

Cedar Lake

Pike Lake

Little Cedar Lake

Druid Lake

Friess Lake

Lake Five

Smith Lake

Green Lake

Lucas Lake

Bark Lake

How this list is built

Washington County lake records

What is the biggest lake in Washington County?

The 12 Biggest Lakes in Washington County, Wisconsin

Cedar Lake

Pike Lake

Little Cedar Lake

Druid Lake

Friess Lake

Lake Five

Smith Lake

Green Lake

Lucas Lake

Bark Lake

How this list is built

Washington County lake records

What is the biggest lake in Washington County?