Lakes / Wisconsin / Gilas Lake

Gilas Lake, Wisconsin

135 acres

Surface Area

88 ft

Max Depth

23 ft

Average Depth

842 ft

Surface Elevation

Where It Sits, and How Deep It Goes

Locator - Wisconsin

45.16 degrees N, 88.17 degrees W - Marinette 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 - Gilas 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 Gilas Lake Stacks Up

Its average depth of 23 ft is more than 2 times a typical shallow Wisconsin lake, which averages under 10 ft.
About 147 miles from Milwaukee, as the crow flies.
3 fish species on the DNR list for this lake.

Fish Species

PanfishLargemouth BassNorthern Pike

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

Facts and Figures

Waterbody ID (WBIC)523300

CountyMarinette

Lake TypeSeepage

Coordinates45.1619, -88.1730

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 523300); USGS; Wisconsin Lakes (shallow-lake benchmark). Verified October 28, 2026.