Minnesota Lake Depths
NESW

Lake Ann

Carver County, Minnesota · MN DNR bathymetric survey
40ft Max
depth
114 acres 8 contours Public access
Paddling Index69Mixedsheltered geometry · wooded shoreline
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Depth scale

The lake

Survey readout

Lake Ann is mapped to a depth of 40 ft on the Minnesota DNR survey and covers about 114 acres in Carver County, Minnesota. Depths come from the Minnesota DNR survey of 1988.

Measured from the Minnesota DNR lake bathymetric contour survey.

Deepest mapped contour
40 ft
Survey year
1988
Surface area
114 acres
Shoreline
1.66 mi · round
Aquatic vegetation
3% of surface · NDVI estimate
Public access
Trailer Launch · Lake Ann, Lake Ann Park Public Water Access Site · Minnesota DNR site · 1 more
Additional depth details8 contours
Contour depths
0–40 ft
Recorded point soundings
40 ft
Compare with another 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
44.87145, -93.56003
MN DNR lake ID
10001200
Vertical exaggeration
2.32×
Basemap
USDA NAIP · public domain
Model size
2.1 MB

Paddling

Paddling Index methodology v1.0 · calculated 2026-09-25
69 / 100MixedData confidence: High

Lake Ann has a mostly natural, lightly developed setting, generally sheltered geometry, nearby higher-volume roads.

Why this score?5 components

Included in the index

ComponentRatingPoints of weightMeasurement
Natural settingVery Good25.8 of 3577% natural land cover within 150 m of shore (65% forest, 11% wetland; 10% developed)
Geometric wind exposureVery Good23.3 of 29mean fetch 673 m · 6% of sampled water within 500 m of shelter · generally short 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 accessGood15.0 of 182 DNR public access sites · boat ramp · fishing pier
Road isolationMixed4.8 of 18nearby higher-volume roads · 27 MnDOT-classified segments within 1.2 km, peak 37,124 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 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 — 65% forest and 11% wetland cover within 150 m of shore
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 2018–2025). Conditions change quickly — check current weather and local conditions before going out.

Fish you might catch

from DNR surveys

10 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. 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 2022
600Fish sampled
10Species

Gamefish Largemouth Bass 109 · Northern Pike 108

Panfish Bluegill 163 · Pumpkinseed 83 · Black Crappie 26

All survey species10 species

Gamefish

Largemouth Bass109 caught · to 19″
Northern Pike108 caught · to 33″

Panfish

Bluegill163 caught · to 9″
Pumpkinseed83 caught · to 7″
Black Crappie26 caught · to 11″
Hybrid Sunfish18 caught · to 8″
Green Sunfish5 caught · to 5″

Bullhead & catfish

Yellow Bullhead81 caught · to 14″
Brown Bullhead6 caught · to 14″
Black Bullhead1 caught · to 12″
Length is the largest fish netted in the survey, not an angler record. Source: Minnesota DNR lake survey (LakeFinder).

Infested waters listing

3 confirmed

Mussels & snails

Plants & algae

  • Brittle NaiadConfirmed in this water in 2017 (listed 2017).
  • Eurasian WatermilfoilConfirmed in this water in 1995 (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

Lake Ann — common questions

How deep is Lake Ann?

The deepest contour on the Minnesota DNR bathymetric survey of Lake Ann is 40 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 Ann?

Lake Ann covers about 114 acres in Carver County, Minnesota.

What fish are in Lake Ann?

Species with survey, catch or recent-stocking evidence include largemouth bass, northern pike, black bullhead, black crappie, bluegill, brown bullhead. The page lists all 10 species and the evidence behind each.

Is there public access to Lake Ann?

Yes. The Minnesota DNR lists 2 public access sites on Lake Ann: Lake Ann, Lake Ann Park Public Water Access Site (boat ramp); Ann Lake Fishing Pier (public fishing pier).