Lakes / Wisconsin / Townline Lake

Townline Lake, Oneida County, Wisconsin

142 acres

Surface Area

19 ft

Max Depth

12 ft

Average Depth

1,625 ft

Surface Elevation

Where It Sits, and How Deep It Goes

Locator - Wisconsin

45.81 degrees N, 89.16 degrees W - Oneida County. State and county outlines drawn from Census boundary data; the lake marker is placed by its DNR coordinates, not by eye. Schematic - not a survey map.

Depth Profile - Townline Lake

Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map. The benchmark is the state itself: Wisconsin Lakes defines a shallow lake as under 20 ft at its deepest, with an average depth under 10 ft.

How Townline Lake Stacks Up

A shallow lake - typical of most Wisconsin lakes, which run under 20 ft at their deepest.
About 190 miles from Madison, as the crow flies.
6 fish species on the DNR list for this lake.

Fish Species

MuskyPanfishLargemouth BassSmallmouth BassNorthern PikeWalleye

Species recorded for this lake. Presence only - no abundance ratings.

Facts and Figures

Waterbody ID (WBIC)1609600

CountyOneida

Lake TypeDrainage

Coordinates45.8134, -89.1639

Deepest Natural Lakes in Wisconsin

#	Lake	County	Surface Area	Max Depth
1	Green Lake	Green Lake	7,920 acres	236 ft
2	Geneva Lake	Walworth	5,401 acres	135 ft
3	Elkhart Lake	Sheboygan	292 acres	119 ft
4	Trout Lake	Vilas	3,864 acres	117 ft
5	Beaver Dam Lake	Barron	1,163 acres	106 ft

Largest Lakes in Wisconsin

#	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

Sources: Wisconsin DNR lake data (WBIC 1609600); USGS; Wisconsin Lakes (shallow-lake benchmark). Verified October 28, 2026.