Michigan lake depth maps
Grousehaven Lake depth map
Grousehaven Lake in Ogemaw County, Michigan reaches a depth of 54 feet. Grousehaven Lake is charted here across 7 closed depth contours, from the 5 ft line down to 50 ft, enclosing about 86 acres of water. Half of that water lies inside the 40 ft line, and only 6.3 acres lie inside the deepest one. Every contour is on the interactive map below, free and without an account.
Data: Michigan DNR Inland Lake Contours (public record). Contours closed, checked and area-computed by Jordan Carter, founder of GilledIt · page updated
Grousehaven Lake depth chart: 7 depth contours from 5 to 50 ft
Data: Michigan DNR Inland Lake Contours (public record), retrieved August 2026 · depths change over time · not for navigation
| Depth contour | Water inside it | Share of mapped water |
|---|---|---|
| 5 ft | 86 acres | 100% |
| 10 ft | 70 acres | 82% |
| 15 ft | 64 acres | 74% |
| 20 ft | 57 acres | 66% |
| 30 ft | 47 acres | 54% |
| 40 ft | 26 acres | 30% |
| 50 ft | 6.3 acres | 7.3% |
Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 86 acres inside the outermost charted contour (the 5 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. The survey also records a 54 ft sounding, marked as a point rather than a closed contour, so it is not charted as a band.
Fishing Grousehaven Lake: steep sides for its size
Inside its outermost 5 ft contour the survey charts about 86 acres of Grousehaven Lake, with the 40 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 5 and 10 ft, where the mapped water loses 16 acres in 5 ft of depth, that band is the contour to work first, because it is where the bottom stops being flat. 6.3 acres, 7.3% of the mapped water, lie inside the deepest 50 ft contour, toward the southern end of the lake. With 54 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 5 and 10 ft lines pinch together, hardest in early season and again as fish follow bait back down in autumn.
Ice fishing on Grousehaven Lake
Grousehaven Lake's 54 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 6.3 acres of it; as the sun gets up, move onto the 5–10 ft break, and spend the middle of the day on the flats inside the 40 ft line. Check ice thickness locally before you walk out.
Grousehaven Lake depth map FAQs
- How deep is Grousehaven Lake?
- Grousehaven Lake reaches a maximum depth of 54 feet in the Michigan DNR Inland Lake Contours survey. Most of it is far shallower: the survey charts 7 closed depth contours over about 86 acres, and half of that water sits inside the 40 ft line. The 54 ft figure is a single recorded sounding rather than a closed contour, so the deepest line you can actually trace on the map is 50 ft.
- Where is the deepest part of Grousehaven Lake?
- The deepest charted water on Grousehaven Lake lies inside the 50 ft contour, toward the southern end of the lake. That contour encloses 6.3 acres, 7.3% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.
- How much of Grousehaven Lake is shallower than 40 feet?
- About half. The 40 ft contour encloses 26 acres of the roughly 86 acres inside the outer 5 ft line, so the other half of the water is shallower than 40 feet. The sharpest drop is between 5 and 10 feet, where the mapped water sheds 16 acres.
- How accurate is this Grousehaven Lake depth map?
- The contours come from the Michigan DNR Inland Lake Contours 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. 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 Grousehaven Lake
- Devoe Lake depth map · 53 ft max · 1 mi away
- Rifle Lake depth map · 70+ ft max · 2 mi away
- Sage Lake depth map · 80 ft max · 6 mi away
- Long Lake depth map · 62 ft max · 8 mi away
- Loon Lake depth map · 128+ ft max · 10 mi away
Mapped fishing venues near Grousehaven Lake
Grousehaven Lake in the venue directory covers access and fishing details for this water.
- Devoe Lake · 1 mi away
- Rifle Lake · 2 mi away
- Sage Lake · 6 mi away
Fishing in Michigan needs a state license: Michigan fishing license guide · all Michigan venues