How deep is Green Lake?

Green Lake is more than 60 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 60 foot line, and the lake continues deeper inside it.

Where is the deepest part of Green Lake?

The deepest charted water on Green Lake lies inside the 60 ft contour, toward the southwestern corner of the lake. That contour encloses 52 acres, 23% of the mapped water, so it is a broad slice of the bottom rather than a pinpoint target, the depth chart above gives the contour to line up on.

How much of Green Lake is shallower than 50 feet?

About half. The 50 ft contour encloses 105 acres of the roughly 232 acres inside the outer 10 ft line, so the other half of the water is shallower than 50 feet. The sharpest drop is between 50 and 60 feet, where the mapped water sheds 53 acres.

How accurate is this Green Lake depth map?

The contours come from the Michigan DNR Inland Lake Contours survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Michigan lake depth maps

Green Lake depth map

Green Lake in Allegan County, Michigan reaches a depth of more than 60 feet at its deepest surveyed contour. Green Lake is charted here across 7 closed depth contours, from the 10 ft line down to 60 ft, enclosing about 232 acres of water. Half of that water lies inside the 50 ft line, and only 52 acres lie inside the deepest one. Every contour is on the interactive map below, free and without an account.

Data: Michigan DNR Inland Lake Contours (public record). Contours closed, checked and area-computed by Jordan Carter, founder of GilledIt · page updated August 19, 2026

Green Lake depth chart: 7 depth contours from 10 to 60 ft

Data: Michigan DNR Inland Lake Contours (public record), retrieved August 2026 · depths change over time · not for navigation

Green Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
10 ft	232 acres	100%
15 ft	217 acres	94%
20 ft	201 acres	87%
30 ft	180 acres	78%
40 ft	153 acres	66%
50 ft	105 acres	45%
60 ft	52 acres	23%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 232 acres inside the outermost charted contour (the 10 ft line), which is the outer edge of the mapped water, several state files carry no 0 ft shoreline line, so this is not the same as a share of the lake's published surface area.

Fishing Green Lake: steep walls and a big basin

About 232 acres of Green Lake sit inside the survey's 10 ft contour, and half of that water is already gone by the 50 ft line: the bottom holds its depth well out from the bank rather than tapering off a long shallow margin. The steepest break on the chart runs from 50 down to 60 ft: 53 acres of bottom fall away across 10 ft there, which makes that band the first contour to work. 52 acres, 23% of the mapped water, lie inside the deepest 60 ft contour, toward the southwestern corner of the lake. At 60 ft this is two-story water: the basin can stay cold below the summer thermocline while warm-water fish stay up on the 10-to-50 ft ground, and the fish that move between the two do it along the 50–60 ft break at first and last light.

Ice fishing on Green Lake

Deep water like Green Lake freezes later and less evenly than the shallow lakes around it, and the winter bite sets up on the first real break, not out over the 60 ft hole. That edge is the 50–60 ft band on the chart above, where 53 acres of bottom tilt away, and panfish and walleye work up and down it through the day. By late ice the fish push back onto the 10-to-50 ft flat. Check ice thickness locally before you walk out.

Green Lake depth map FAQs

How deep is Green Lake?: Green Lake is more than 60 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 60 foot line, and the lake continues deeper inside it.
Where is the deepest part of Green Lake?: The deepest charted water on Green Lake lies inside the 60 ft contour, toward the southwestern corner of the lake. That contour encloses 52 acres, 23% of the mapped water, so it is a broad slice of the bottom rather than a pinpoint target, the depth chart above gives the contour to line up on.
How much of Green Lake is shallower than 50 feet?: About half. The 50 ft contour encloses 105 acres of the roughly 232 acres inside the outer 10 ft line, so the other half of the water is shallower than 50 feet. The sharpest drop is between 50 and 60 feet, where the mapped water sheds 53 acres.
How accurate is this Green Lake depth map?: The contours come from the Michigan DNR Inland Lake Contours survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Depth maps for lakes near Green Lake

Barlow Lake depth map · 60+ ft max · 7 mi away
Gun Lake depth map · 68 ft max · 11 mi away
Sugarbush Lake depth map · 93 ft max · 13 mi away
Lake Sixteen depth map · 80+ ft max · 13 mi away
Algonquin Lake depth map · 45+ ft max · 14 mi away

Mapped fishing venues near Green Lake

Green Lake in the venue directory covers access and fishing details for this water.

Barlow Lake · 7 mi away
Gun Lake · 11 mi away
Fishing Terrace · 12 mi away

Fishing in Michigan needs a state license: Michigan fishing license guide · all Michigan venues