Island Lake

Anoka County, Minnesota · MN DNR bathymetric survey

20ft Max
depth

73 acres 4 contours Public access

Paddling Index82Very Goodsheltered geometry · wooded shoreline · carry-in access

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Depth scale

05101520

The lake

Survey readout

Island Lake is mapped to a depth of 20 ft on the Minnesota DNR survey and covers about 73 acres in Anoka County, Minnesota. Depths come from the Minnesota DNR survey of 1949.

Measured from the Minnesota DNR lake bathymetric contour survey.

Deepest mapped contour: 20 ft
Survey year: 1949
Surface area: 73 acres
Shoreline: 1.35 mi · round
Aquatic vegetation: 14% of surface · NDVI estimate
Public access: Carry-In · Island Lake Public Water Access Site · Minnesota DNR site

Additional depth details4 contours

Contour depths: 0–20 ft
Recorded point soundings: 20 ft, 15 ft

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Location

Anoka County, Minnesota · 15 nearest of 30 lakes · tap a dot for that lake

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: 45.36748, -93.09602
MN DNR lake ID: 02002200
Vertical exaggeration: 3.0×
Basemap: USDA NAIP · public domain
Model size: 2.1 MB

Paddling

Paddling Index methodology v1.0 · calculated 2026-09-25

82 / 100Very GoodData confidence: High

Island Lake has a heavily wooded and largely undeveloped setting, well sheltered geometry, nearby higher-volume roads.

Why this score?5 components

Included in the index

Component	Rating	Points of weight	Measurement
Natural setting	Excellent	32.1 of 35	89% natural land cover within 150 m of shore (48% forest, 41% wetland; 4% developed)
Geometric wind exposure	Excellent	27.0 of 29	mean fetch 528 m · 33% of sampled water within 500 m of shelter · short fetch in most directions
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	Excellent	17.6 of 18	1 DNR public access site · carry-in or canoe launch
Road isolation	Mixed	5.4 of 18	nearby higher-volume roads · 7 MnDOT-classified segments within 1.2 km, peak 6,210 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 14% 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 — 48% forest and 41% wetland cover within 150 m of shore

Compare Minnesota lakes by Paddling Index →

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

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

Common Carp

White Sucker

About these fish → the Fish of Minnesota guide

Compiled from Minnesota DNR fishery surveys. 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 2000

270Fish sampled

13Species

Gamefish Northern Pike 7 · Bowfin 6 · Walleye 2 · Largemouth Bass 1

Panfish Bluegill 122 · Black Crappie 75 · White Crappie 36

All survey species13 species

Gamefish

Northern Pike7 caught · to 27″

Bowfin6 caught · to 24″

Walleye2 caught · to 20″

Largemouth Bass1 caught · to 10″

Panfish

Bluegill122 caught · to 8″

Black Crappie75 caught · to 10″

White Crappie36 caught · to 12″

Pumpkinseed1 caught · to 6″

Bullhead & catfish

Black Bullhead7 caught · to 10″

Brown Bullhead3 caught · to 12″

Yellow Bullhead1 caught · to 10″

Forage & nongame

Common Carp5 caught · to 17″

White Sucker4 caught · to 15″

Length is the largest fish netted in the survey, not an angler record. Source: Minnesota DNR lake survey (LakeFinder).

Infested waters listing

1 confirmed

Plants & algae

Eurasian WatermilfoilConfirmed in this water in 2022 (listed 2022).

How to identify invasive species in Minnesota lakes →

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 — common questions

How deep is Island Lake?

The deepest contour on the Minnesota DNR bathymetric survey of Island Lake is 20 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?

Island Lake covers about 73 acres in Anoka County, Minnesota.

What fish are in Island Lake?

Species with survey, catch or recent-stocking evidence include largemouth bass, northern pike, walleye, black bullhead, black crappie, bluegill. The page lists all 13 species and the evidence behind each.

Is there public access to Island Lake?

Yes. The Minnesota DNR lists a public access site on Island Lake: a carry-in launch. It is administered by Anoka County. DNR directions: "Martin-Island-Linwood County Park, 22480 Martin Lake Rd NE, Wyoming, MN."

More lakes in Anoka County