Indiana lake depth maps
Martin Lake depth map
Martin Lake in LaGrange County, Indiana reaches a depth of 50 feet. Martin Lake is charted here across 5 closed depth contours, from the 10 ft line down to 50 ft, enclosing about 21 acres of water. Half of that water lies inside the 50 ft line, and only 8.6 acres lie inside the deepest one. Every contour is on the interactive map below, free and without an account.
Data: Indiana DNR Lake Bathymetry (credit: Indiana DNR). Contours closed, checked and area-computed by Jordan Carter, founder of GilledIt · page updated
Martin Lake depth chart: 5 depth contours from 10 to 50 ft
Data: Indiana DNR Lake Bathymetry (credit: Indiana DNR), retrieved August 2026 · depths change over time · not for navigation
| Depth contour | Water inside it | Share of mapped water |
|---|---|---|
| 10 ft | 21 acres | 100% |
| 20 ft | 18 acres | 85% |
| 30 ft | 16 acres | 76% |
| 40 ft | 13 acres | 63% |
| 50 ft | 8.6 acres | 42% |
Acreages are computed from the closed Indiana DNR Lake Bathymetry contour rings, with islands subtracted. Shares are of the 21 acres inside the outermost charted contour (the 10 ft line), which is the outer edge of the mapped water, several state files carry no 0 ft shoreline line, so this is not the same as a share of the lake's published surface area.
Fishing Martin Lake: steep sides for its size
Inside its outermost 10 ft contour the survey charts about 21 acres of Martin Lake, with the 50 ft line enclosing half of it, so the bottom holds its depth well out from the bank rather than tapering off a long shallow margin. The sharpest change on the chart is between 40 and 50 ft, where the mapped water loses 4.4 acres in 10 ft of depth, that band is the contour to work first, because it is where the bottom stops being flat. 8.6 acres, 42% of the mapped water, lie inside the deepest 50 ft contour, toward the western side of the lake. With 50 ft at its deepest there is no true cold-water layer here, so structure does the work the thermocline does elsewhere: fish the points and inside turns where the 40 and 50 ft lines pinch together, hardest in early season and again as fish follow bait back down in autumn.
Ice fishing on Martin Lake
Martin Lake's 50 ft is a workable ice depth, enough water to hold fish all winter, without the slow freeze-up of a big basin. First light belongs on the 50 ft hole, all 8.6 acres of it; as the sun gets up, move onto the 40–50 ft break, and spend the middle of the day on the flats inside the 50 ft line. Check ice thickness locally before you walk out.
Martin Lake depth map FAQs
- How deep is Martin Lake?
- Martin Lake reaches a maximum depth of 50 feet in the Indiana DNR Lake Bathymetry survey. Most of it is far shallower: the survey charts 5 closed depth contours over about 21 acres, and half of that water sits inside the 50 ft line.
- Where is the deepest part of Martin Lake?
- The deepest charted water on Martin Lake lies inside the 50 ft contour, toward the western side of the lake. That contour encloses 8.6 acres, 42% of the mapped water, so it is a broad slice of the bottom rather than a pinpoint target, the depth chart above gives the contour to line up on.
- How much of Martin Lake is shallower than 50 feet?
- About half. The 50 ft contour encloses 8.6 acres of the roughly 21 acres inside the outer 10 ft line, so the other half of the water is shallower than 50 feet. The sharpest drop is between 40 and 50 feet, where the mapped water sheds 4.4 acres.
- How accurate is this Martin Lake depth map?
- The contours come from the Indiana DNR Lake Bathymetry survey, retrieved August 2026 and last rebuilt on August 19, 2026. 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. Per Indiana DNR, the data are graphical representations for reference only, not a survey instrument. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.
Depth maps for lakes near Martin Lake
- Olin Lake depth map · 70 ft max · 0 mi away
- Oliver Lake depth map · 80 ft max · 1 mi away
- Dallas Lake depth map · 100 ft max · 2 mi away
- Witmer Lake depth map · 50 ft max · 2 mi away
- Hackleburg Lake depth map · 35 ft max · 2 mi away
Mapped fishing venues near Martin Lake
Martin Lake in the venue directory covers access and fishing details for this water.
- Olin Lake · 0 mi away
- Oliver Lake · 1 mi away
- Dallas Lake · 2 mi away
Fishing in Indiana needs a state license: Indiana fishing license guide · all Indiana venues