How deep is South Commerce Lake?

South Commerce Lake reaches a maximum depth of 60 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 7 closed depth contours over about 315 acres, and half of that water sits inside the 30 ft line.

Where is the deepest part of South Commerce Lake?

The deepest charted water on South Commerce Lake lies inside the 56 ft contour, toward the northeastern corner of the lake. That contour encloses 9.8 acres, 3.1% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.

How much of South Commerce Lake is shallower than 30 feet?

About half. The 30 ft contour encloses 154 acres of the roughly 315 acres inside the outer 5 ft line, so the other half of the water is shallower than 30 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 99 acres.

How accurate is this South Commerce 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

South Commerce Lake depth map

South Commerce Lake in Oakland County, Michigan reaches a depth of 60 feet. South Commerce Lake is charted here across 7 closed depth contours, from the 5 ft line down to 56 ft, enclosing about 315 acres of water. Half of that water lies inside the 30 ft line, and only 9.8 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

South Commerce Lake depth chart: 7 depth contours from 5 to 56 ft

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

South Commerce Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
5 ft	315 acres	100%
10 ft	216 acres	69%
20 ft	191 acres	61%
30 ft	154 acres	49%
40 ft	98 acres	31%
50 ft	51 acres	16%
56 ft	9.8 acres	3.1%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 315 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.

Fishing South Commerce Lake: a stepped drop into deep water

The survey encloses about 315 acres of South Commerce Lake inside its 5 ft contour, and half of that water lies inside the 30 ft line, so the bottom steps down contour by contour into the deep basin rather than shelving flat or plunging all at once. Between 5 and 10 ft the mapped water sheds 99 acres in 5 ft of depth, the sharpest change on the chart, start on that band, because it is where the bottom stops being flat. 9.8 acres, 3.1% of the mapped water, lie inside the deepest 56 ft contour, toward the northeastern 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 5-to-30 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 South Commerce Lake

Deep water like South Commerce 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 56 ft hole. That edge is the 5–10 ft band on the chart above, where 99 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-30 ft flat. Check ice thickness locally before you walk out.

South Commerce Lake depth map FAQs

How deep is South Commerce Lake?: South Commerce Lake reaches a maximum depth of 60 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 7 closed depth contours over about 315 acres, and half of that water sits inside the 30 ft line.
Where is the deepest part of South Commerce Lake?: The deepest charted water on South Commerce Lake lies inside the 56 ft contour, toward the northeastern corner of the lake. That contour encloses 9.8 acres, 3.1% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.
How much of South Commerce Lake is shallower than 30 feet?: About half. The 30 ft contour encloses 154 acres of the roughly 315 acres inside the outer 5 ft line, so the other half of the water is shallower than 30 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 99 acres.
How accurate is this South Commerce 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 South Commerce Lake

Moss Lake depth map · 39+ ft max · 2 mi away
Wolverine Lake depth map · 57 ft max · 2 mi away
Cooley Lake depth map · 56 ft max · 3 mi away
Middle Straits Lake depth map · 55 ft max · 3 mi away
Union Lake depth map · 110 ft max · 4 mi away

Mapped fishing venues near South Commerce Lake

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

Moss Lake · 2 mi away
Wolverine Lake · 2 mi away
Cooley Lake · 3 mi away

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