Michigan lake depth maps
Second Fortune Lake depth map
Second Fortune Lake in Iron County, Michigan reaches a depth of 80 feet. The official Michigan survey maps 16 depth bands across 17 contour lines. This free map of Second Fortune Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.
Second Fortune Lake depth chart: 16 depth bands to 80 ft
Data: Michigan DNR Inland Lake Contours (public record), retrieved August 2026 · depths change over time · not for navigation
| Depth contour | Share of mapped area inside it |
|---|---|
| 5 ft | about 100% |
| 10 ft | about 89% |
| 20 ft | about 68% |
| 30 ft | about 56% |
| 40 ft | about 37% |
| 50 ft | about 16% |
| 60 ft | about 9% |
| 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 Second Fortune 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 16 mapped depth bands make it straightforward to find those breaks before you launch.
Ice fishing on Second Fortune Lake
On deep water like Second Fortune 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.
Second Fortune Lake depth map FAQs
- How deep is Second Fortune Lake?
- Second Fortune Lake reaches a maximum depth of 80 feet, according to the Michigan DNR Inland Lake Contours survey. Most of the lake is shallower, with 16 mapped depth bands between the shoreline and the deepest hole.
- Where is the deepest part of Second Fortune Lake?
- The deepest surveyed water on Second Fortune Lake sits toward the eastern side 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 Second Fortune 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 Second Fortune Lake
- First Fortune Lake depth map · 70+ ft max · 1 mi away
- Long Lake depth map · 105 ft max · 3 mi away
- Chicagon Lake depth map · 110+ ft max · 4 mi away
- Stager Lake depth map · 55 ft max · 8 mi away
- Iron Lake depth map · 45+ ft max · 12 mi away
Mapped fishing venues near Second Fortune Lake
Second Fortune Lake in the venue directory covers access and fishing details for this water.
- First Fortune Lake · 1 mi away
- Long Lake · 3 mi away
- Chicagon Lake · 4 mi away
Fishing in Michigan needs a state license: Michigan fishing license guide · all Michigan venues