Lake Mary
depth
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Depth scale
Survey readout
Lake Mary is mapped to a depth of 13 ft on the Michigan DNR survey and covers about 37 acres in Menominee County, Michigan.
Measured from the Michigan DNR inland-lake contour survey.
- Deepest sounding
- 13 ft
- Mean depth
- 5.6 ft · estimated
- Surface area
- 37 acres
- Estimated volume
- 207 acre-ft · 68M gal
- Shoreline
- 1.01 mi · lobed
- Aquatic vegetation
- 7% of surface · NDVI estimate
- Public access
- Boat Launch
Additional depth details3 contours
- Contour depths
- 0–13 ft
- Recorded point soundings
- 13 ft, 13 ft
79.2% of the surface sits over water shallower than 10 ft. Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.
Compare with another lakeProvenance
Sources: MI DNR inland lake contours, USGS 3DEP, USDA NAIP (public domain), OpenStreetMap (ODbL), MI DNR Boat Launches.
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Map details & sources5 sources
All layers registered to one bounding box; positions in WGS 84.
Survey-derived depth contours drape over USGS 3DEP elevation, with a USDA NAIP aerial basemap and OpenStreetMap shoreline. Colour shows surveyed depth; dark lines are the survey's own isobaths.
- Coordinates
- 45.45212, -87.75711
- MI DNR lake ID
- L43402
- Vertical exaggeration
- 3.0×
- Basemap
- USDA NAIP · public domain
- Model size
- 1.9 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-08-21Lake Mary has a mostly natural, lightly developed setting, well sheltered geometry, little nearby major-road exposure. No special watercraft restriction is identified in the current source.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Very Good | 21.4 of 30 | 73% natural land cover within 150 m of shore (23% forest, 46% wetland; 16% developed) |
| Geometric wind exposure | Excellent | 25.0 of 25 | mean fetch 428 m · 79% of sampled water within 500 m of shelter · short fetch in most directions |
| Watercraft controls | None identified | 7.5 of 15 | No special watercraft restriction identified in the current DNR source. Motors permitted, subject to general law. |
| Public access | Good | 12.8 of 15 | 2 sites with DNR boating-facility records · 2 ramp lanes · 4 trailer spaces |
| Road isolation | Excellent | 12.3 of 15 | relatively isolated from major roads · 2 MDOT-classified segments within 1.2 km, peak 129 vehicles/day |
Additional paddling considerations
These describe the lake but are not part of the v1 Paddling Index and do not change the number above.
- Wake sensitivity
- Low — wide enough that wakes disperse over most of the lake
- Aquatic vegetation
- Low — approximately 7% mapped coverage · NAIP aerial imagery (NDVI)
- Observed motorized activity
- Unknown — No lake-level measurement of boat traffic is available. Legal permission to operate motors is not evidence of use.
- Wildlife habitat potential
- High — 23% forest and 46% wetland cover within 150 m of shore
Compare Michigan lakes by Paddling Index →
Non-native species records
No non-native species recorded in the available dataset. This does not confirm that no non-native species are present.
Source: Midwest Glacial Lakes Partnership Conservation Planner; underlying nonindigenous species records from the USGS Nonindigenous Aquatic Species database.
Lake Mary — common questions
How deep is Lake Mary?
The deepest contour on the Michigan DNR bathymetric survey of Lake Mary is 13 ft. That is the deepest depth the historical survey map records, which may differ from the deepest point of the lake itself.
How big is Lake Mary?
Lake Mary covers about 37 acres in Menominee County, Michigan.
What is the average depth of Lake Mary?
The estimated mean depth of Lake Mary is 5.6 ft, calculated from the survey contours.
Is there public access to Lake Mary?
Yes. The Michigan DNR boat-launch data identifies 1 public access site on Lake Mary, including Lake Mary.
