How deep is Sage Lake?

Sage Lake reaches a maximum depth of 80 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 8 closed depth contours over about 846 acres, and half of that water sits inside the 30 ft line. The 80 ft figure is a single recorded sounding rather than a closed contour, so the deepest line you can actually trace on the map is 70 ft.

Where is the deepest part of Sage Lake?

The deepest charted water on Sage Lake lies inside the 70 ft contour, toward the northern end of the lake. That contour encloses 4.3 acres, 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 Sage Lake is shallower than 30 feet?

About half. The 30 ft contour encloses 377 acres of the roughly 846 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 196 acres.

How accurate is this Sage 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

Sage Lake depth map

Sage Lake in Ogemaw County, Michigan reaches a depth of 80 feet. Sage Lake is charted here across 8 closed depth contours, from the 5 ft line down to 70 ft, enclosing about 846 acres of water. Half of that water lies inside the 30 ft line, and only 4.3 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

Sage Lake depth chart: 8 depth contours from 5 to 70 ft

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

Sage Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
5 ft	846 acres	100%
10 ft	650 acres	77%
20 ft	506 acres	60%
30 ft	377 acres	45%
40 ft	237 acres	28%
50 ft	100 acres	12%
60 ft	28 acres	3.3%
70 ft	4.3 acres	under 1%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 846 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. The survey also records a 80 ft sounding, marked as a point rather than a closed contour, so it is not charted as a band.

Fishing Sage Lake: a stepped drop into deep water

The survey encloses about 846 acres of Sage Lake inside its 5 ft contour, and half of that water lies inside the 30 ft line, so the drop to the deep basin comes in stages, each contour giving up another slice of water, rather than in one abrupt wall. Between 5 and 10 ft the mapped water sheds 196 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 deepest 70 ft contour holds 4.3 acres, under 1% of the mapped water, toward the northern end of the lake. 80 ft of water makes this a two-story fishery: warm-water fish hold the 5-to-30 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 Sage Lake

Sage 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 70 ft hole. The 5–10 ft band on the chart above is that edge: 196 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-30 ft flat. Check ice thickness locally before you walk out.

Sage Lake depth map FAQs

How deep is Sage Lake?: Sage Lake reaches a maximum depth of 80 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 8 closed depth contours over about 846 acres, and half of that water sits inside the 30 ft line. The 80 ft figure is a single recorded sounding rather than a closed contour, so the deepest line you can actually trace on the map is 70 ft.
Where is the deepest part of Sage Lake?: The deepest charted water on Sage Lake lies inside the 70 ft contour, toward the northern end of the lake. That contour encloses 4.3 acres, 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 Sage Lake is shallower than 30 feet?: About half. The 30 ft contour encloses 377 acres of the roughly 846 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 196 acres.
How accurate is this Sage 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 Sage Lake

Rifle Lake depth map · 70+ ft max · 5 mi away
Devoe Lake depth map · 53 ft max · 5 mi away
Grousehaven Lake depth map · 54 ft max · 6 mi away
Long Lake depth map · 62 ft max · 7 mi away
Loon Lake depth map · 128+ ft max · 7 mi away

Mapped fishing venues near Sage Lake

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

Rifle Lake · 5 mi away
Devoe Lake · 5 mi away
Grousehaven Lake · 6 mi away

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