WI · ranked by public data

The 12 Deepest Lakes in Washington County, Wisconsin

12 Washington County lakes are at least 50 acres with a documented maximum depth, out of 54 documented lakes in the county. Updated July 2026.

1105 ft
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
105 ft maximum depth · 937 acres · 3 public landings
256 ft
260 acres
Washington County, WI
Little Cedar Lake
enhancedDepth mapStockedWater data
43.38, -88.23260 acres | 56 ft max1 public access pointLargemouth Bass, Panfish
56 ft maximum depth · 260 acres · 1 public landing
353 ft
122 acres
Washington County, WI
Druid Lake
enhancedDepth mapWater data
43.28, -88.41122 acres | 53 ft max1 public access pointPanfish, Largemouth Bass
53 ft maximum depth · 122 acres · 1 public landing
448 ft
121 acres
Washington County, WI
Friess Lake
enhancedDepth mapWater data
43.24, -88.28121 acres | 48 ft max0 public access pointsLargemouth Bass, Northern Pike
48 ft maximum depth · 121 acres · No verified public access
545 ft
461 acres
Washington County, WI
Pike Lake
enhancedDepth mapWater data
43.31, -88.33461 acres | 45 ft max5 public access pointsWalleye, Largemouth Bass
45 ft maximum depth · 461 acres · 5 public landings
637 ft
70 acres
Washington County, WI
Green Lake
enhancedDepth mapStockedWater data
43.46, -88.1070 acres | 37 ft max2 public access pointsLargemouth Bass, Panfish
37 ft maximum depth · 70 acres · 2 public landings
735 ft
54 acres
Washington County, WI
Wallace Lake
enhancedDepth mapStockedWater data
43.45, -88.1654 acres | 35 ft max1 public access pointLargemouth Bass, Northern Pike
35 ft maximum depth · 54 acres · 1 public landing
834 ft
65 acres
Washington County, WI
Bark Lake
enhancedDepth mapWater data
43.22, -88.2165 acres | 34 ft max0 public access pointsLargemouth Bass, Northern Pike
34 ft maximum depth · 65 acres · No verified public access
923 ft
104 acres
Washington County, WI
Lake Five
enhancedDepth mapWater data
43.20, -88.27104 acres | 23 ft max0 public access pointsLargemouth Bass, Northern Pike
23 ft maximum depth · 104 acres · No verified public access
1015 ft
69 acres
Washington County, WI
Lucas Lake
enhancedDepth mapWater data
43.41, -88.2169 acres | 15 ft max0 public access pointsLargemouth Bass, Northern Pike
15 ft maximum depth · 69 acres · No verified public access

Rank	Lake	County	Max depth	Acres	Public access
11	Smith Lake	Washington	5 ft	85	2 landings
12	Barton Pond	Washington	5 ft	63	—

Methodology

How this list is built

Ranked strictly by documented maximum depth from DNR lake records. No estimates, no hearsay depths.
Lakes without a documented maximum depth are excluded rather than guessed at.
Lakes under 50 acres — or without documented acreage — are excluded from rankings.
Public access is shown for every lake but never affects the ranking — a deep lake ranks whether or not you can launch on it.

FAQ

Washington County lake records

What is the deepest lake in Washington County?

Cedar Lake — Cedar Lake in Washington County is the deepest documented lake in Washington County, at 105 feet maximum depth.

Deepest lakes statewide Biggest 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 Deepest Lakes in Washington County, Wisconsin

12 Washington County lakes are at least 50 acres with a documented maximum depth, out of 54 documented lakes in the county. Updated July 2026.

1105 ft
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
105 ft maximum depth · 937 acres · 3 public landings
256 ft
260 acres
Washington County, WI
Little Cedar Lake
enhancedDepth mapStockedWater data
43.38, -88.23260 acres | 56 ft max1 public access pointLargemouth Bass, Panfish
56 ft maximum depth · 260 acres · 1 public landing
353 ft
122 acres
Washington County, WI
Druid Lake
enhancedDepth mapWater data
43.28, -88.41122 acres | 53 ft max1 public access pointPanfish, Largemouth Bass
53 ft maximum depth · 122 acres · 1 public landing
448 ft
121 acres
Washington County, WI
Friess Lake
enhancedDepth mapWater data
43.24, -88.28121 acres | 48 ft max0 public access pointsLargemouth Bass, Northern Pike
48 ft maximum depth · 121 acres · No verified public access
545 ft
461 acres
Washington County, WI
Pike Lake
enhancedDepth mapWater data
43.31, -88.33461 acres | 45 ft max5 public access pointsWalleye, Largemouth Bass
45 ft maximum depth · 461 acres · 5 public landings
637 ft
70 acres
Washington County, WI
Green Lake
enhancedDepth mapStockedWater data
43.46, -88.1070 acres | 37 ft max2 public access pointsLargemouth Bass, Panfish
37 ft maximum depth · 70 acres · 2 public landings
735 ft
54 acres
Washington County, WI
Wallace Lake
enhancedDepth mapStockedWater data
43.45, -88.1654 acres | 35 ft max1 public access pointLargemouth Bass, Northern Pike
35 ft maximum depth · 54 acres · 1 public landing
834 ft
65 acres
Washington County, WI
Bark Lake
enhancedDepth mapWater data
43.22, -88.2165 acres | 34 ft max0 public access pointsLargemouth Bass, Northern Pike
34 ft maximum depth · 65 acres · No verified public access
923 ft
104 acres
Washington County, WI
Lake Five
enhancedDepth mapWater data
43.20, -88.27104 acres | 23 ft max0 public access pointsLargemouth Bass, Northern Pike
23 ft maximum depth · 104 acres · No verified public access
1015 ft
69 acres
Washington County, WI
Lucas Lake
enhancedDepth mapWater data
43.41, -88.2169 acres | 15 ft max0 public access pointsLargemouth Bass, Northern Pike
15 ft maximum depth · 69 acres · No verified public access

Rank	Lake	County	Max depth	Acres	Public access
11	Smith Lake	Washington	5 ft	85	2 landings
12	Barton Pond	Washington	5 ft	63	—

Methodology

How this list is built

Ranked strictly by documented maximum depth from DNR lake records. No estimates, no hearsay depths.
Lakes without a documented maximum depth are excluded rather than guessed at.
Lakes under 50 acres — or without documented acreage — are excluded from rankings.
Public access is shown for every lake but never affects the ranking — a deep lake ranks whether or not you can launch on it.

FAQ

Washington County lake records

What is the deepest lake in Washington County?

Cedar Lake — Cedar Lake in Washington County is the deepest documented lake in Washington County, at 105 feet maximum depth.

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

The 12 Deepest Lakes in Washington County, Wisconsin

Cedar Lake

Little Cedar Lake

Druid Lake

Friess Lake

Pike Lake

Green Lake

Wallace Lake

Bark Lake

Lake Five

Lucas Lake

How this list is built

Washington County lake records

What is the deepest lake in Washington County?

The 12 Deepest Lakes in Washington County, Wisconsin

Cedar Lake

Little Cedar Lake

Druid Lake

Friess Lake

Pike Lake

Green Lake

Wallace Lake

Bark Lake

Lake Five

Lucas Lake

How this list is built

Washington County lake records

What is the deepest lake in Washington County?