Loon Lake
depth
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Depth scale
Survey readout
Loon Lake is mapped to a depth of 75 ft on the Minnesota DNR survey and covers about 2,666 acres in St. Louis County, Minnesota. Depths come from the Minnesota DNR survey of 1938.
Measured from the Minnesota DNR lake bathymetric contour survey.
- Deepest mapped contour
- 75 ft
- Survey year
- 1938
- Surface area
- 2,666 acres
- Shoreline
- 37.17 mi · irregular
- Aquatic vegetation
- 3% of surface · NDVI estimate
- Public access
- No public DNR launch identified
Additional depth details15 contours
- Contour depths
- 0–75 ft
- Recorded point soundings
- 75 ft, 30 ft
Provenance
Sources: MN DNR Lake Bathymetric Contours, USGS 3DEP, USDA NAIP (public domain), OpenStreetMap (ODbL).
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Map details & sources4 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. Color shows surveyed depth; dark lines are the survey's own isobaths.
- Coordinates
- 48.24393, -92.26413
- MN DNR lake ID
- 69047000
- Vertical exaggeration
- 1.4×
- Basemap
- USDA NAIP · public domain
- Model size
- 2.4 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-09-25Loon Lake has a mostly natural, lightly developed setting, moderate open-water exposure, little nearby major-road exposure.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Very Good | 31.7 of 43 | 73% natural land cover within 150 m of shore (63% forest, 10% wetland; 0% developed) |
| Geometric wind exposure | Good | 12.5 of 36 | mean fetch 1,957 m · 5% of sampled water within 500 m of shelter · moderate open-water fetch |
| Motor & speed rules | Not modeled | — | Minnesota’s lake-by-lake motor, speed and no-wake rules are mostly county and city ordinances, not map data, so they are not part of the Minnesota index. Check local signage and ordinances before going out. |
| Public access | Not listed | — | No public access site of this lake’s own in the MN DNR water access and fishing site records. Private, commercial and informal launches are not all in these records, so this is not evidence that access is poor — the component is excluded and the remaining weights are renormalized. |
| Road isolation | Excellent | 21.4 of 21 | relatively isolated from major roads · 0 MnDOT-classified segments within 1.2 km |
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 3% 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
- Moderate — 63% forest and 10% wetland cover within 150 m of shore
- Wilderness
- Partly inside the BWCAW — About 82% of this lake lies inside the Boundary Waters Canoe Area Wilderness. Federal wilderness rules apply: visitor permits are required, and motors are allowed only on certain lakes, with horsepower limits. Check Superior National Forest rules before going. · MN DNR BWCAW boundary (Public Law 95-495)
Compare Minnesota lakes by Paddling Index →
Fish you might catch
from DNR surveys13 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colors, not photographs (provenance).
Redhorse
White Sucker
Sauger
About these fish → the Fish of Minnesota guide
Fishery
surveyed 2022Gamefish Walleye 120 · Northern Pike 45 · Smallmouth Bass 33 · Sauger 3
Panfish Rock Bass 31 · Yellow Perch 21 · Black Crappie 7
All survey species13 species
Gamefish
Panfish
Forage & nongame
Infested waters listing
1 confirmedOther invertebrates
- Spiny WaterfleaConfirmed in this water in 2008 (listed 2009).
What does the infested waters list mean?
The Minnesota DNR lists a lake, river, pond or wetland as infested when it contains an aquatic invasive species that could spread to other waters, or when it is connected to a water where one is present. Activities such as bait harvest and water use are managed differently on infested waters. Check the current list before moving water, bait or equipment.
Source: Minnesota Department of Natural Resources. List of Infested Waters, September 9, 2026. https://www.dnr.state.mn.us/invasives/ais/infested.html
Loon Lake — common questions
How deep is Loon Lake?
The deepest contour on the Minnesota DNR bathymetric survey of Loon Lake is 75 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 Loon Lake?
Loon Lake covers about 2,666 acres in St. Louis County, Minnesota.
What fish are in Loon Lake?
Species with survey, catch or recent-stocking evidence include burbot, lake whitefish, northern pike, smallmouth bass, walleye, black crappie. The page lists all 13 species and the evidence behind each.
Is there public access to Loon Lake?
No public launch for Loon Lake appears in the Minnesota DNR access data. That is not the same as the lake being private -- private and commercial launches are not in that source.
