How deep is Island Lake?

Island Lake is more than 60 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 60 foot line, and the lake continues deeper inside it, with 12 depth bands mapped in total.

Where is the deepest part of Island Lake?

The deepest surveyed water on Island Lake sits toward the southeastern corner of the lake, inside the 60 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.

How accurate is this Island 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

Island Lake depth map

Island Lake in Schoolcraft County, Michigan reaches a depth of more than 60 feet at its deepest surveyed contour. The official Michigan survey maps 12 depth bands across 15 contour lines. This free map of Island Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.

Island Lake depth chart: 12 depth bands to 60+ ft

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

Island Lake depth chart data
Depth contour	Share of mapped area inside it
5 ft	about 100%
10 ft	about 32%
15 ft	about 27%
20 ft	about 22%
25 ft	about 17%
30 ft	about 13%
35 ft	about 7%
40 ft	about 4%
45 ft	about 2%
50 ft	about 1%
60 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 Island Lake: deep, two-story water

At 60 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 12 mapped depth bands make it straightforward to find those breaks before you launch.

Ice fishing on Island Lake

On deep water like Island 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.

Island Lake depth map FAQs

How deep is Island Lake?: Island Lake is more than 60 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 60 foot line, and the lake continues deeper inside it, with 12 depth bands mapped in total.
Where is the deepest part of Island Lake?: The deepest surveyed water on Island Lake sits toward the southeastern corner of the lake, inside the 60 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
How accurate is this Island 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 Island Lake

Dodge Lake depth map · 55+ ft max · 1 mi away
Steuben Lake depth map · 55+ ft max · 9 mi away
Clear Lake depth map · 50+ ft max · 11 mi away
McKeever Lake depth map · 65 ft max · 16 mi away
Round Lake depth map · 55+ ft max · 22 mi away

Mapped fishing venues near Island Lake

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

Dodge Lake · 1 mi away
Steuben Lake · 9 mi away
Clear Lake · 11 mi away

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