How deep is Corey Lake?

Corey Lake reaches a maximum depth of 33 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 6 closed depth contours over about 21 acres, and half of that water sits inside the 20 ft line.

Where is the deepest part of Corey Lake?

The deepest charted water on Corey Lake lies inside the 33 ft contour, toward the northwestern corner of the lake. That contour encloses under an acre, 1.3% 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 Corey Lake is shallower than 20 feet?

About half. The 20 ft contour encloses 8 acres of the roughly 21 acres inside the outer 5 ft line, so the other half of the water is shallower than 20 feet. The sharpest drop is between 30 and 33 feet, where the mapped water sheds 3.9 acres.

How accurate is this Corey 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

Corey Lake depth map

Corey Lake in Gogebic County, Michigan reaches a depth of 33 feet. Corey Lake is charted here across 6 closed depth contours, from the 5 ft line down to 33 ft, enclosing about 21 acres of water. Half of that water lies inside the 20 ft line, and only under an acre 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

Corey Lake depth chart: 6 depth contours from 5 to 33 ft

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

Corey Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
5 ft	21 acres	100%
10 ft	17 acres	80%
15 ft	12 acres	56%
20 ft	8 acres	37%
30 ft	4.2 acres	20%
33 ft	under 1 acre	1.3%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 21 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 Corey Lake: an evenly graded bottom

About 21 acres of Corey Lake sit inside the survey's 5 ft contour, and half of that water is already gone by the 20 ft line: the bottom loses depth gradually and evenly, with no broad shelf and no single abrupt drop. The steepest break on the chart runs from 30 down to 33 ft: 3.9 acres of bottom fall away across 3 ft there, which makes that band the first contour to work. Inside the 33 ft contour there is under an acre of water, toward the northwestern corner of the lake: a single pocket rather than a basin, and worth a drift over in high summer. Nothing here reaches a true cold-water layer at 33 ft, so structure does the thermocline's work: the points and inside turns where the 30 and 33 ft lines pinch together fish hardest in early season, and again as fish follow bait back down in autumn.

Ice fishing on Corey Lake

At 33 ft, Corey Lake is a workable ice depth: deep enough to hold fish all winter without the slow freeze-up of a big basin. Start on the 33 ft hole, 0.3 acres of it, at first light, then move up onto the 30–33 ft break as the sun gets up, and fish the flats inside the 20 ft line through the middle of the day. Check ice thickness locally before you walk out.

Corey Lake depth map FAQs

How deep is Corey Lake?: Corey Lake reaches a maximum depth of 33 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 6 closed depth contours over about 21 acres, and half of that water sits inside the 20 ft line.
Where is the deepest part of Corey Lake?: The deepest charted water on Corey Lake lies inside the 33 ft contour, toward the northwestern corner of the lake. That contour encloses under an acre, 1.3% 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 Corey Lake is shallower than 20 feet?: About half. The 20 ft contour encloses 8 acres of the roughly 21 acres inside the outer 5 ft line, so the other half of the water is shallower than 20 feet. The sharpest drop is between 30 and 33 feet, where the mapped water sheds 3.9 acres.
How accurate is this Corey 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 Corey Lake

High Lake depth map · 90 ft max · 1 mi away
Clark Lake depth map · 74 ft max · 1 mi away
Little Duck Lake depth map · 69 ft max · 3 mi away
Wilson Lake depth map · 60 ft max · 7 mi away
Schneider Lake depth map · 60 ft max · 8 mi away

Mapped fishing venues near Corey Lake

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

High Lake · 1 mi away
Clark Lake · 1 mi away
Little Duck Lake · 3 mi away

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