How deep is Mary Lake?

Mary Lake is more than 80 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 80 foot line, and the lake continues deeper inside it, with 9 depth bands mapped in total.

Where is the deepest part of Mary Lake?

The deepest surveyed water on Mary Lake sits toward the middle of the lake, inside the 80 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.

How accurate is this Mary 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

Mary Lake depth map

Mary Lake in Dickinson County, Michigan reaches a depth of more than 80 feet at its deepest surveyed contour. The official Michigan survey maps 9 depth bands across 12 contour lines. This free map of Mary Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.

Mary Lake depth chart: 9 depth bands to 80+ ft

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

Mary Lake depth chart data
Depth contour	Share of mapped area inside it
5 ft	about 100%
10 ft	about 35%
20 ft	about 29%
30 ft	about 19%
40 ft	about 12%
50 ft	about 8%
60 ft	about 5%
70 ft	about 2%
80 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 Mary Lake: deep, two-story water

At 80 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 9 mapped depth bands make it straightforward to find those breaks before you launch.

Ice fishing on Mary Lake

On deep water like Mary 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.

Mary Lake depth map FAQs

How deep is Mary Lake?: Mary Lake is more than 80 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 80 foot line, and the lake continues deeper inside it, with 9 depth bands mapped in total.
Where is the deepest part of Mary Lake?: The deepest surveyed water on Mary Lake sits toward the middle of the lake, inside the 80 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
How accurate is this Mary 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 Mary Lake

Bass Lake depth map · 58 ft max · 14 mi away
Pickerel Lake depth map · 66 ft max · 23 mi away
Stager Lake depth map · 55 ft max · 29 mi away
Second Fortune Lake depth map · 80 ft max · 37 mi away
First Fortune Lake depth map · 70+ ft max · 37 mi away

Mapped fishing venues near Mary Lake

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

Bass Lake · 14 mi away
Pickerel Lake · 23 mi away

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