Lake Mary

Iron County, Michigan · MI DNR bathymetric survey

48ft Max
depth

275 acres 10 contours Public access

Paddling Index70Goodaway from major roads · sheltered geometry · wooded shoreline

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Depth scale

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The lake

Survey readout

Lake Mary is mapped to a depth of 48 ft on the Michigan DNR survey and covers about 275 acres in Iron County, Michigan.

Measured from the Michigan DNR inland-lake contour survey.

Deepest sounding: 48 ft
Mean depth: 20.7 ft · estimated
Surface area: 275 acres
Estimated volume: 5,709 acre-ft · 1,860M gal
Shoreline: 5.12 mi · irregular
Aquatic vegetation: 1% of surface · NDVI estimate
Public access: Boat Launch

Additional depth details10 contours

Contour depths: 0–48 ft
Recorded point soundings: 48 ft

26.1% of the surface sits over water shallower than 10 ft; 53% is deeper than 20 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 Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.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: 46.05766, -88.22258
MI DNR lake ID: L45545
Vertical exaggeration: 2.05×
Basemap: USDA NAIP · public domain
Model size: 2.5 MB

Paddling

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

70 / 100GoodData confidence: High

Lake Mary has a mostly natural, lightly developed setting, generally sheltered geometry, limited 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	22.2 of 30	78% natural land cover within 150 m of shore (58% forest, 17% wetland; 15% developed)
Geometric wind exposure	Very Good	16.4 of 25	mean fetch 948 m · 12% of sampled water within 500 m of shelter · generally short fetch
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	1 site with DNR boating-facility records · 1 ramp lane · 4 trailer spaces
Road isolation	Very Good	10.8 of 15	limited nearby major-road exposure · 4 MDOT-classified segments within 1.2 km, peak 137 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 1% 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 — 58% forest and 17% 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 Boating Access Sites (2026-08), 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.

Fish you might catch

from angler catches & active stocking

4 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).

Walleyestocked

Burbot

Crappie

Bluegill

Historically stocked, no recent evidence: Rainbow Trout (last planted 1981) — not shown above.

Fishing rules for this lake Beta

Size and daily limits for the 4 species found here — 3 open to harvest, 1 with a special rule or closed season.

These are hook-and-line size, daily limit and season rules. Gear, spearing and bow fishing, spawning closures and rod limits are set by other Fisheries Orders and are not shown here.

WalleyeSpecial rulesNamed in a fisheries order for this lake — see the rule text below

BluegillOpen to harvestMinimum size: no size limit · Daily limit: 25 (FO-215 · statewide inland) The 25 is in any combination of the sunfishes — Bluegill, Pumpkinseed, Black and White Crappie, Rock Bass, Green, Longear and Redear Sunfish, Warmouth and hybrids — not 25 of each (FO-215.23A).

Beta. This panel is newly published. Every value is parsed from the Michigan DNR fisheries orders and hand-checked against the printed digest, but the coverage and wording are still under review. If anything here disagrees with the Michigan DNR's Fisheries Orders or its printed digest, the DNR is right — the signed Fisheries Order is the legal text; the digest summarises it.

BurbotOpen to harvestMinimum size: no size limit · Daily limit: 5 (2026 DNR digest · Burbot)

CrappieOpen to harvestMinimum size: no size limit · Daily limit: 25 (FO-215 · statewide inland) The 25 is in any combination of the sunfishes — Bluegill, Pumpkinseed, Black and White Crappie, Rock Bass, Green, Longear and Redear Sunfish, Warmouth and hybrids — not 25 of each (FO-215.23A).

WalleyeSpecial rulesNamed in a fisheries order for this lake — see the rule text below

Official rule text for this lake

“no size limit on Northern Pike and up to five (5) Northern Pike may be retained in the daily possession limit with only one (1) 24-inches or greater. (Dawson Lake water shall expire on September 15, 2028).” — FO-206

“protected slot limit on Walleye from 18 – 23 inches; with no more than one (1) greater than 23-inches. This regulation will expire on April 1, 2038.” — FO-206

From FO-206.26 (eff. 2026-04-01) / FO-215.23A (eff. 2023-09-15) / FO-254.25 (eff. 2025-10-10), checked against the 2026 Michigan Fishing Regulations digest · verified 2026-08-24. Regulations can change — Michigan DNR rules are the controlling source; verify current regulations before fishing. Official regulations

Compiled from registered Master Angler catches and Michigan DNR stockings within the last 10 years. Silhouettes are stylized and scaled to typical adult sizes relative to one another. Presence is not a promise — fishing isn’t a sure thing.

Notable catches

Master Angler program · 1995–2025

Master Angler catches recorded on this lake — too few to show a pattern, so they are listed individually.

Burbot32″ · 1995 · ice fishing · spoon

Crappie14.5″ · 2025 · spincasting · artificial lure

Bluegill11.8″ · 2005 · spincasting · night crawler

Bluegill10.2″ · 2006 · trolling · worm

Master Angler entries are fish that met the program’s minimum size and were registered by the angler — they show what this lake has produced, not what a day here will produce. A catch on record is history, not a species listing: “Fish you might catch” lists only species with current evidence. Source: Michigan DNR Master Angler data.

DNR stocking

state stocking record · 1981–2025

Fish the Michigan DNR has planted in this lake — what was added, distinct from what a survey netted above.

Walleye191,749 stocked · 1985–2025 · 29 plantings

Rainbow trout4,285 stocked · 1981

Source: Michigan DNR Fish Stocking Database.

Non-native species records

1 record

Mussels & snails

Banded Mysterysnail

What does non-native mean?

USGS records identify non-native species that have been documented for this lake or its shoreline. Non-native does not necessarily mean invasive, and historical records do not confirm current presence.

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≈0.5 mi

🥾 Hiking trailhead≈0.6 mi

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).

Bait & tackle nearby

licensed retail bait dealers · straight-line distance

MICHI-AHO Resort≈1.8 mi2181 M-69, Crystal Falls · Google · Apple

Superior Sport & Feed LL LLC≈5.7 mi · (906) 841-113131 Superior Ave, Crystal Falls · Google · Apple

Crystal Bait≈6 mi · (906) 875-4434520 Crystal Falls, Crystal Falls · Google · Apple

Dealers licensed by the Michigan DNR to sell live bait; listing is not an endorsement. Distances are straight-line, not driving — and call ahead: hours and stock change. Source: Michigan DNR retail bait dealer data.

Quick answers

Lake Mary — common questions

How deep is Lake Mary?

The deepest contour on the Michigan DNR bathymetric survey of Lake Mary is 48 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 275 acres in Iron County, Michigan.

What is the average depth of Lake Mary?

The estimated mean depth of Lake Mary is 20.7 ft, calculated from the survey contours.

What fish are in Lake Mary?

Species with survey, catch or recent-stocking evidence include burbot, walleye, bluegill, crappie. The page shows the evidence behind each.

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.