How deep is Grand Sable Lake?

Grand Sable Lake is more than 85 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 85 foot line, and the lake continues deeper inside it, with 17 depth bands mapped in total.

Where is the deepest part of Grand Sable Lake?

The deepest surveyed water on Grand Sable Lake sits toward the northern end of the lake, inside the 85 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.

How accurate is this Grand Sable Lake depth map?

The contours come from the Michigan DNR Inland Lake Contours survey. 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.

Michigan lake depth maps

Grand Sable Lake depth map

Grand Sable Lake in Alger County, Michigan reaches a depth of more than 85 feet at its deepest surveyed contour. The official Michigan survey maps 17 depth bands across 18 contour lines. This free map of Grand Sable Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.

Grand Sable Lake depth chart: 17 depth bands to 85+ ft

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

Grand Sable Lake depth chart data
Depth contour	Share of mapped area inside it
5 ft	about 100%
10 ft	about 44%
15 ft	about 39%
20 ft	about 36%
25 ft	about 34%
30 ft	about 31%
35 ft	about 28%
40 ft	about 25%
45 ft	about 22%
50 ft	about 16%
55 ft	about 9%
60 ft	about 3%
85 ft	under 1%

Share of the surveyed surface area enclosed by each depth contour, computed from the Michigan DNR Inland Lake Contours data.

How to fish Grand Sable Lake: deep, two-story water

At 85 feet, this is a two-story fishery: warm-water species work the shallows and weed edges while the deep basin can hold cold-water fish below the summer thermocline. In summer, target the transition where the bottom breaks from the shallow shelf toward the basin; fish suspend along that edge at dawn and dusk. The 17 mapped depth bands make it straightforward to find those breaks before you launch.

Ice fishing on Grand Sable Lake

On deep water like Grand Sable Lake, the winter bite concentrates along the first major drop-off rather than the deepest basin. Use the contours above to find where the shallow shelf breaks toward deep water and set up on that edge; panfish and walleye slide up and down it through the day. Late ice often pushes fish shallower again. Always verify ice thickness locally before walking out, and remember deep lakes freeze later and less evenly than shallow ones.

Grand Sable Lake depth map FAQs

How deep is Grand Sable Lake?: Grand Sable Lake is more than 85 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 85 foot line, and the lake continues deeper inside it, with 17 depth bands mapped in total.
Where is the deepest part of Grand Sable Lake?: The deepest surveyed water on Grand Sable Lake sits toward the northern end of the lake, inside the 85 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
How accurate is this Grand Sable Lake depth map?: The contours come from the Michigan DNR Inland Lake Contours survey. 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.

Depth maps for lakes near Grand Sable Lake

Beaver Lake depth map · 39+ ft max · 15 mi away
North Belle Lake depth map · 70+ ft max · 15 mi away
Camp Eight Lake depth map · 74+ ft max · 18 mi away
Long Lake depth map · 71 ft max · 18 mi away
Syphon Lake depth map · 160 ft max · 19 mi away

Mapped fishing venues near Grand Sable Lake

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

Beaver Lake · 15 mi away
North Belle Lake · 15 mi away
Camp Eight Lake · 18 mi away

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