How deep is Hemlock Lake?

Hemlock Lake is more than 70 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 70 foot line, and the lake continues deeper inside it.

Where is the deepest part of Hemlock Lake?

The deepest charted water on Hemlock Lake lies inside the 70 ft contour, toward the southeastern corner of the lake. That contour encloses 2.9 acres, 5.8% 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 Hemlock Lake is shallower than 40 feet?

About half. The 40 ft contour encloses 23 acres of the roughly 51 acres inside the outer 10 ft line, so the other half of the water is shallower than 40 feet. The sharpest drop is between 20 and 30 feet, where the mapped water sheds 11 acres.

How accurate is this Hemlock 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

Hemlock Lake depth map

Hemlock Lake in Cass County, Michigan reaches a depth of more than 70 feet at its deepest surveyed contour. Hemlock Lake is charted here across 7 closed depth contours, from the 10 ft line down to 70 ft, enclosing about 51 acres of water. Half of that water lies inside the 40 ft line, and only 2.9 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

Hemlock Lake depth chart: 7 depth contours from 10 to 70 ft

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

Hemlock Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
10 ft	51 acres	100%
20 ft	41 acres	81%
30 ft	30 acres	59%
40 ft	23 acres	45%
50 ft	15 acres	30%
60 ft	9.8 acres	19%
70 ft	2.9 acres	5.8%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 51 acres inside the outermost charted contour (the 10 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 Hemlock Lake: a stepped drop into deep water

About 51 acres of Hemlock Lake sit inside the survey's 10 ft contour, and half of that water is already gone by the 40 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 20 down to 30 ft: 11 acres of bottom fall away across 10 ft there, which makes that band the first contour to work. 2.9 acres, 5.8% of the mapped water, lie inside the deepest 70 ft contour, toward the southeastern corner of the lake. At 70 ft this is two-story water: the basin can stay cold below the summer thermocline while warm-water fish stay up on the 10-to-40 ft ground, and the fish that move between the two do it along the 20–30 ft break at first and last light.

Ice fishing on Hemlock Lake

Deep water like Hemlock 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 70 ft hole. That edge is the 20–30 ft band on the chart above, where 11 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 10-to-40 ft flat. Check ice thickness locally before you walk out.

Hemlock Lake depth map FAQs

How deep is Hemlock Lake?: Hemlock Lake is more than 70 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 70 foot line, and the lake continues deeper inside it.
Where is the deepest part of Hemlock Lake?: The deepest charted water on Hemlock Lake lies inside the 70 ft contour, toward the southeastern corner of the lake. That contour encloses 2.9 acres, 5.8% 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 Hemlock Lake is shallower than 40 feet?: About half. The 40 ft contour encloses 23 acres of the roughly 51 acres inside the outer 10 ft line, so the other half of the water is shallower than 40 feet. The sharpest drop is between 20 and 30 feet, where the mapped water sheds 11 acres.
How accurate is this Hemlock 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 Hemlock Lake

Cedar Lake depth map · 84 ft max · 2 mi away
Corey Lake depth map · 70+ ft max · 9 mi away
Eagle Lake depth map · 60+ ft max · 11 mi away
Donnell Lake depth map · 60+ ft max · 12 mi away
Christie Lake depth map · 48+ ft max · 13 mi away

Mapped fishing venues near Hemlock Lake

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

Cedar Lake · 2 mi away
Corey Lake · 9 mi away
Eagle Lake · 11 mi away

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