Michigan lake depth maps
Allen Lake depth map
Allen Lake in Lenawee County, Michigan reaches a depth of 75 feet. The official Michigan survey maps 7 depth bands across 8 contour lines. This free map of Allen Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.
Allen Lake depth chart: 7 depth bands to 75 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 36% |
| 15 ft | about 31% |
| 20 ft | about 26% |
| 30 ft | about 16% |
| 40 ft | about 6% |
Share of the surveyed surface area enclosed by each depth contour, computed from the Michigan DNR Inland Lake Contours data.
How to fish Allen Lake: deep, two-story water
At 75 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 7 mapped depth bands make it straightforward to find those breaks before you launch.
Ice fishing on Allen Lake
On deep water like Allen 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.
Allen Lake depth map FAQs
- How deep is Allen Lake?
- Allen Lake reaches a maximum depth of 75 feet, according to the Michigan DNR Inland Lake Contours survey. Most of the lake is shallower, with 7 mapped depth bands between the shoreline and the deepest hole.
- Where is the deepest part of Allen Lake?
- The deepest surveyed water on Allen Lake sits toward the middle of the lake, inside the 75 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
- How accurate is this Allen 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 Allen Lake
- Wamplers Lake depth map · 39 ft max · 2 mi away
- Silver Lake depth map · 26 ft max · 6 mi away
- Devils Lake depth map · 63 ft max · 7 mi away
- Round Lake depth map · 67 ft max · 8 mi away
- Farewell Lake depth map · 43+ ft max · 16 mi away
Mapped fishing venues near Allen Lake
Allen Lake in the venue directory covers access and fishing details for this water.
- Wamplers Lake · 2 mi away
- Silver Lake · 6 mi away
- Devils Lake · 7 mi away
Fishing in Michigan needs a state license: Michigan fishing license guide · all Michigan venues