How deep is Devils Lake?

Devils Lake reaches a maximum depth of 63 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 8 closed depth contours over about 1,361 acres, and half of that water sits inside the 20 ft line.

Where is the deepest part of Devils Lake?

The deepest charted water on Devils Lake lies inside the 63 ft contour, toward the eastern side of the lake. That contour encloses under an acre, under 1% 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 Devils Lake is shallower than 20 feet?

About half. The 20 ft contour encloses 584 acres of the roughly 1,361 acres inside the outer 5 ft line, so the other half of the water is shallower than 20 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 502 acres.

How accurate is this Devils 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

Devils Lake depth map

Devils Lake in Lenawee County, Michigan reaches a depth of 63 feet. Devils Lake is charted here across 8 closed depth contours, from the 5 ft line down to 63 ft, enclosing about 1,361 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

Devils Lake depth chart: 8 depth contours from 5 to 63 ft

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

Devils Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
5 ft	1,361 acres	100%
10 ft	859 acres	63%
20 ft	584 acres	43%
30 ft	451 acres	33%
37 ft	40 acres	3%
38 ft	8.5 acres	under 1%
60 ft	3.7 acres	under 1%
63 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 1,361 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 Devils Lake: a wide shallow flat over a deep hole

The survey encloses about 1,361 acres of Devils Lake inside its 5 ft contour, and half of that water lies inside the 20 ft line, so most of this Lenawee County water is shallow and the depth is concentrated in one part of the basin. Between 5 and 10 ft the mapped water sheds 502 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. The 63 ft contour, toward the eastern side of the lake, encloses under an acre of water, a single pocket rather than a basin, but one worth a drift over in high summer. At 63 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-20 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 Devils Lake

Deep water like Devils 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 63 ft hole. That edge is the 5–10 ft band on the chart above, where 502 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-20 ft flat. Check ice thickness locally before you walk out.

Devils Lake depth map FAQs

How deep is Devils Lake?: Devils Lake reaches a maximum depth of 63 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 8 closed depth contours over about 1,361 acres, and half of that water sits inside the 20 ft line.
Where is the deepest part of Devils Lake?: The deepest charted water on Devils Lake lies inside the 63 ft contour, toward the eastern side of the lake. That contour encloses under an acre, under 1% 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 Devils Lake is shallower than 20 feet?: About half. The 20 ft contour encloses 584 acres of the roughly 1,361 acres inside the outer 5 ft line, so the other half of the water is shallower than 20 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 502 acres.
How accurate is this Devils 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 Devils Lake

Round Lake depth map · 67 ft max · 2 mi away
Silver Lake depth map · 26 ft max · 4 mi away
Allen Lake depth map · 75 ft max · 7 mi away
Wamplers Lake depth map · 39 ft max · 9 mi away
Farewell Lake depth map · 43+ ft max · 12 mi away

Mapped fishing venues near Devils Lake

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

Round Lake · 2 mi away
Silver Lake · 4 mi away
Allen Lake · 7 mi away

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