How deep is Green Lake?

Green Lake reaches a maximum depth of 102 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 11 closed depth contours over about 2,007 acres, and half of that water sits inside the 50 ft line. The 102 ft figure is a single recorded sounding rather than a closed contour, so the deepest line you can actually trace on the map is 100 ft.

Where is the deepest part of Green Lake?

The deepest charted water on Green Lake lies inside the 100 ft contour, toward the southwestern corner of the lake. That contour encloses 44 acres, 2.2% of the mapped water, so it is a small target on a big lake, 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 880 acres of the roughly 2,007 acres inside the outer 5 ft line, so the other half of the water is shallower than 50 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 289 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 Grand Traverse County, Michigan reaches a depth of 102 feet. Green Lake is charted here across 11 closed depth contours, from the 5 ft line down to 100 ft, enclosing about 2,007 acres of water. Half of that water lies inside the 50 ft line, and only 44 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: 11 depth contours from 5 to 100 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
5 ft	2,007 acres	100%
10 ft	1,718 acres	86%
20 ft	1,444 acres	72%
30 ft	1,291 acres	64%
40 ft	1,170 acres	58%
50 ft	880 acres	44%
60 ft	620 acres	31%
70 ft	426 acres	21%
80 ft	286 acres	14%
90 ft	125 acres	6.2%
100 ft	44 acres	2.2%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 2,007 acres inside the outermost charted contour (the 5 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. The survey also records a 102 ft sounding, marked as a point rather than a closed contour, so it is not charted as a band.

Fishing Green Lake: a stepped drop into deep water

About 2,007 acres of Green Lake sit inside the survey's 5 ft contour, and half of that water is already gone by the 50 ft line: the bottom steps down contour by contour into the deep basin rather than shelving flat or plunging all at once. The steepest break on the chart runs from 5 down to 10 ft: 289 acres of bottom fall away across 5 ft there, which makes that band the first contour to work. 44 acres, 2.2% of the mapped water, lie inside the deepest 100 ft contour, toward the southwestern corner of the lake. At 102 ft this is two-story water: the basin can stay cold below the summer thermocline while warm-water fish stay up on the 5-to-50 ft ground, and the fish that move between the two do it along the 5–10 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 100 ft hole. That edge is the 5–10 ft band on the chart above, where 289 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 5-to-50 ft flat. Check ice thickness locally before you walk out.

Green Lake depth map FAQs

How deep is Green Lake?: Green Lake reaches a maximum depth of 102 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 11 closed depth contours over about 2,007 acres, and half of that water sits inside the 50 ft line. The 102 ft figure is a single recorded sounding rather than a closed contour, so the deepest line you can actually trace on the map is 100 ft.
Where is the deepest part of Green Lake?: The deepest charted water on Green Lake lies inside the 100 ft contour, toward the southwestern corner of the lake. That contour encloses 44 acres, 2.2% of the mapped water, so it is a small target on a big lake, 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 880 acres of the roughly 2,007 acres inside the outer 5 ft line, so the other half of the water is shallower than 50 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 289 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

Duck Lake depth map · 98 ft max · 2 mi away
Cedar Hedge Lake depth map · 69 ft max · 4 mi away
Silver Lake depth map · 96+ ft max · 7 mi away
Long Lake depth map · 88+ ft max · 8 mi away
Lake Ann depth map · 75 ft max · 8 mi away

Mapped fishing venues near Green Lake

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

Cedar Hedge Lake · 4 mi away
Silver Lake · 7 mi away
Long Lake · 8 mi away

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