Minnesota Lake Depths
NESW

Island Lake Reservoir (W.Basin)

St. Louis County, Minnesota · MN DNR bathymetric survey
70ft Max
depth
6,317 acres 8 contours Public access
Paddling Index47Modestcarry-in access
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Depth scale

The lake

Survey readout

Island Lake Reservoir (W.Basin) is mapped to a depth of 70 ft on the Minnesota DNR survey and covers about 6,317 acres in St. Louis County, Minnesota. Depths come from the Minnesota DNR survey of 1965.

Measured from the Minnesota DNR lake bathymetric contour survey.

Deepest mapped contour
70 ft
Survey year
1965
Surface area
6,317 acres
Shoreline
66.66 mi · irregular
Aquatic vegetation
2% of surface · NDVI estimate
Public access
Trailer Launch · Island Lake, Abbot Road (E) Public Water Access Site · Minnesota DNR site · 2 more
Additional depth details8 contours
Contour depths
0–70 ft
Recorded point soundings
70 ft, 50 ft, 50 ft, 50 ft, 40 ft, 30 ft
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Chart data

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
47.01341, -92.18386
MN DNR lake ID
69037201
Basemap
USDA NAIP · public domain
Model size
2.4 MB

Paddling

Paddling Index methodology v1.0 · calculated 2026-09-25
47 / 100ModestData confidence: High

Island Lake Reservoir (W.Basin) has a partly natural setting, long open-water fetch, nearby higher-volume roads.

Why this score?5 components

Included in the index

ComponentRatingPoints of weightMeasurement
Natural settingGood21.4 of 3567% natural land cover within 150 m of shore (34% forest, 31% wetland; 22% developed)
Geometric wind exposureModest2.9 of 29mean fetch 3,562 m · 0% of sampled water within 500 m of shelter · long open-water fetch
Motor & speed rulesNot 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 accessExcellent17.6 of 183 DNR public access sites · carry-in or canoe launch · boat ramp
Road isolationMixed4.9 of 18nearby higher-volume roads · 18 MnDOT-classified segments within 1.2 km, peak 3,425 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 2% 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 — 34% forest and 31% wetland cover within 150 m of shore
State water trail
On a state water trail — Part of a designated Minnesota State Water Trail: Cloquet River. · MN DNR State Water Trails
How this index is calculated. The Paddling Index is a relative composite derived from lake geometry and public land-cover, access and traffic-count 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 for Minnesota lakes: natural setting 35%, geometric wind exposure 29%, public access 18%, road isolation 18%. Motor, speed and no-wake rules are not modeled for Minnesota, and traffic counts cover state, county and some city roads but not township roads. Where a component has no data the remaining weights are renormalized and the confidence rating is lowered; below Medium confidence no number is shown. Minnesota scores are relative to other Minnesota lakes and are not directly comparable with Paddling Index scores on our sister sites, which use different data sources, some with a watercraft-rules component. Sources: MN DNR lake bathymetry outline, USGS/MRLC NLCD Land Cover (2021), MN DNR Water Access Sites and Fishing Piers & Shore Fishing Sites (2026-09) and MnDOT Annual Average Daily Traffic (counts 2023–2025). Conditions change quickly — check current weather and local conditions before going out.

Fish you might catch

from DNR surveys & active stocking

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

Compiled from Minnesota DNR fishery surveys and Minnesota 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.

Fishery

surveyed 2021
963Fish sampled
19Species

Gamefish Walleye 173 · Northern Pike 59 · Smallmouth Bass 39 · Channel Catfish 5

Panfish Yellow Perch 312 · Bluegill 159 · Rock Bass 109

All survey species19 species

Gamefish

Walleye173 caught · to 27″
Northern Pike59 caught · to 35″
Smallmouth Bass39 caught · to 20″
Channel Catfish5 caught · to 32″
Largemouth Bass3 caught · to 6″
Muskellunge2 caught · to 30″

Panfish

Yellow Perch312 caught · to 11″
Bluegill159 caught · to 10″
Rock Bass109 caught · to 10″
Black Crappie24 caught · to 13″
Pumpkinseed13 caught · to 7″

Bullhead & catfish

Black Bullhead1 caught · to 12″

Forage & nongame

White Sucker38 caught · to 21″
Johnny Darter16 caught · to 2″
Golden Shiner2 caught · to 2″
Iowa Darter2 caught · to 1″
Logperch2 caught · to 3″
Shorthead Redhorse2 caught · to 19″
Spottail Shiner2 caught · to 2″
Length is the largest fish netted in the survey, not an angler record. Source: Minnesota DNR lake survey of the whole lake (DOW 69037200), which includes this basin (LakeFinder).

DNR stocking

state stocking record · 2016–2025

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

Muskellunge11,825 stocked · 2016–2025 · 10 plantings
Tullibee (cisco)811 stocked · 2021–2024 · 2 plantings
Source: Minnesota DNR LakeFinder stocking report for the whole lake (DOW 69037200). LakeFinder lists the last 10 years of stocking only.

Infested waters listing

1 confirmed

Other invertebrates

  • Spiny WaterfleaConfirmed in this water in 1990 (listed 1995).
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

Quick answers

Island Lake Reservoir (W.Basin) — common questions

How deep is Island Lake Reservoir (W.Basin)?

The deepest contour on the Minnesota DNR bathymetric survey of Island Lake Reservoir (W.Basin) is 70 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 Island Lake Reservoir (W.Basin)?

Island Lake Reservoir (W.Basin) covers about 6,317 acres in St. Louis County, Minnesota.

What fish are in Island Lake Reservoir (W.Basin)?

Species with survey, catch or recent-stocking evidence include channel catfish, largemouth bass, muskellunge, northern pike, smallmouth bass, walleye. The page lists all 19 species and the evidence behind each.

Is there public access to Island Lake Reservoir (W.Basin)?

Yes. The Minnesota DNR lists 3 public access sites on Island Lake Reservoir (W.Basin): Island Lake, Abbot Road (E) Public Water Access Site (boat ramp); Island Lake, Dam Site Public Water Access Site (boat ramp); Cloquet River Public Water Access Site (carry-in launch).