How deep is Grace Lake?

Grace Lake reaches a maximum depth of 65 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 13 closed depth contours over about 44 acres, and half of that water sits inside the 25 ft line.

Where is the deepest part of Grace Lake?

The deepest charted water on Grace Lake lies inside the 65 ft contour, toward the western side of the lake. That contour encloses under an acre, under 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 Grace Lake is shallower than 25 feet?

About half. The 25 ft contour encloses 21 acres of the roughly 44 acres inside the outer 5 ft line, so the other half of the water is shallower than 25 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 9 acres.

How accurate is this Grace 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

Grace Lake depth map

Grace Lake in Gogebic County, Michigan reaches a depth of 65 feet. Grace Lake is charted here across 13 closed depth contours, from the 5 ft line down to 65 ft, enclosing about 44 acres of water. Half of that water lies inside the 25 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

Grace Lake depth chart: 13 depth contours from 5 to 65 ft

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

Grace Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
5 ft	44 acres	100%
10 ft	35 acres	81%
15 ft	30 acres	68%
20 ft	25 acres	57%
25 ft	21 acres	48%
30 ft	17 acres	39%
35 ft	11 acres	26%
40 ft	8.3 acres	19%
45 ft	4 acres	9.2%
50 ft	1.8 acres	4.2%
55 ft	1 acres	2.2%
60 ft	under 1 acre	1.6%
65 ft	under 1 acre	under 1%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 44 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 Grace Lake: a stepped drop into deep water

About 44 acres of Grace Lake sit inside the survey's 5 ft contour, and half of that water is already gone by the 25 ft line: the drop to the deep basin comes in stages, each contour giving up another slice of water, rather than in one abrupt wall. The steepest break on the chart runs from 5 down to 10 ft: 9 acres of bottom fall away across 5 ft there, which makes that band the first contour to work. Inside the 65 ft contour there is under an acre of water, toward the western side of the lake: a single pocket rather than a basin, and worth a drift over in high summer. 65 ft of water makes this a two-story fishery: warm-water fish hold the 5-to-25 ft ground while the basin can stay cold below the summer thermocline, and the traffic between the two runs along the 5–10 ft break at first and last light.

Ice fishing on Grace Lake

Grace Lake freezes later and less evenly than the shallow waters around it, and the winter bite sets up on the first real break rather than out over the 65 ft hole. The 5–10 ft band on the chart above is that edge: 9 acres of bottom tilt away there, and panfish and walleye slide up and down it through the day. Late ice pushes fish back onto the 5-to-25 ft flat. Check ice thickness locally before you walk out.

Grace Lake depth map FAQs

How deep is Grace Lake?: Grace Lake reaches a maximum depth of 65 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 13 closed depth contours over about 44 acres, and half of that water sits inside the 25 ft line.
Where is the deepest part of Grace Lake?: The deepest charted water on Grace Lake lies inside the 65 ft contour, toward the western side of the lake. That contour encloses under an acre, under 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 Grace Lake is shallower than 25 feet?: About half. The 25 ft contour encloses 21 acres of the roughly 44 acres inside the outer 5 ft line, so the other half of the water is shallower than 25 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 9 acres.
How accurate is this Grace 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 Grace Lake

Big Mosquito Lake depth map · 65 ft max · 0 mi away
Emeline Lake depth map · 75 ft max · 1 mi away
Clark Lake depth map · 74 ft max · 7 mi away
Corey Lake depth map · 33 ft max · 8 mi away
High Lake depth map · 90 ft max · 9 mi away

Mapped fishing venues near Grace Lake

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

Big Mosquito Lake · 0 mi away
Emeline Lake · 1 mi away
Clark Lake · 7 mi away

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