Marten Lake

Iron County, Michigan · MI DNR bathymetric survey

6ft Max
depth

167 acres 3 contours Public access

Paddling Index74GoodMedium confidenceaway from major roads · sheltered geometry · wooded shoreline

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Depth scale

0246

The lake

Survey readout

Marten Lake is mapped to a depth of 6 ft on the Michigan DNR survey and covers about 167 acres in Iron County, Michigan.

Measured from the Michigan DNR inland-lake contour survey.

Deepest mapped contour: 6 ft
Mean depth: 4.7 ft · estimated
Surface area: 167 acres
Estimated volume: 790 acre-ft · 258M gal
Shoreline: 2.25 mi · round
Aquatic vegetation: 0% of surface · NDVI estimate
Public access: Boat Launch

Additional depth details3 contours

Contour depths: 0–6 ft
Recorded point soundings: 6 ft

100% 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 Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.

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Location

Iron County, Michigan · 15 nearest of 81 lakes · tap a dot for that lake

Chart data

Provenance

Sources: MI DNR inland lake contours, USGS 3DEP, USDA NAIP (public domain), OpenStreetMap (ODbL), MI DNR Boat Launches.

⚠ Not for navigation

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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: 46.39339, -88.69496
MI DNR lake ID: L36055
Vertical exaggeration: 12.0× below the waterline; land at true scale
Basemap: USDA NAIP · public domain
Model size: 2.4 MB

Paddling

Paddling Index methodology v1.0 · calculated 2026-08-21

74 / 100GoodData confidence: Medium

Marten Lake has a mostly natural, lightly developed setting, generally 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	26.9 of 35	73% natural land cover within 150 m of shore (18% forest, 54% wetland; 8% developed)
Geometric wind exposure	Very Good	20.6 of 29	mean fetch 827 m · 0% of sampled water within 500 m of shelter · generally short fetch
Watercraft controls	None identified	8.8 of 18	No special watercraft restriction identified in the current DNR source. Motors permitted, subject to general law.
Public access	Not listed	—	No DNR-listed access site. Township, county and road-end launches are not in this source, so this is not evidence that access is poor — the component is excluded and the remaining weights are renormalized.
Road isolation	Excellent	17.6 of 18	relatively isolated from major roads · 1 MDOT-classified segment within 1.2 km, peak 117 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 0% 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 — 18% forest and 54% wetland cover within 150 m of shore

Compare Michigan lakes by Paddling Index →

How this index is calculated. The Paddling Index is a relative composite derived from lake geometry and public environmental, access, roadway and watercraft-control data. It is not a user review, a safety rating, or a prediction of an individual outing. Differences of a few points should not be treated as meaningful — an 84 and an 82 are broadly comparable. Components and weights: natural setting 30%, geometric wind exposure 25%, watercraft controls 15%, public access 15%, road isolation 15%; observed motorboat activity is weighted 0% because no defensible lake-level measurement exists. Where a component has no data the remaining weights are renormalized and the confidence rating is lowered; below Medium confidence no number is shown. Sources: MI DNR Watercraft Control Areas (2026-08), USGS/MRLC NLCD Land Cover (2021), MDOT Annual Average Daily Traffic (2025) and MI DNR bathymetric survey outline (0 ft isobath). Conditions change quickly — check current weather and local conditions before going out.

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.

At the lake

community-mapped amenities · straight-line distance

⛻ Campground≈1.1 mi · 2 mapped

From OpenStreetMap community mapping — shown only where something is mapped; an amenity missing here may still exist. Distances are straight-line. Verify before you rely on it. © OpenStreetMap contributors (ODbL).

Quick answers

Marten Lake — common questions

How deep is Marten Lake?

The deepest contour on the Michigan DNR bathymetric survey of Marten Lake is 6 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 Marten Lake?

Marten Lake covers about 167 acres in Iron County, Michigan.

What is the average depth of Marten Lake?

The estimated mean depth of Marten Lake is 4.7 ft, calculated from the survey contours.

Is there public access to Marten Lake?

Yes. The Michigan DNR boat-launch data identifies 1 public access site on Marten Lake, including Marten Lake.