Lake De Montreville

Washington County, Minnesota · MN DNR bathymetric survey

20ft Max
depth

157 acres 4 contours Public access

Paddling Index56Mixedsheltered geometry

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Depth scale

05101520

The lake

Survey readout

Lake De Montreville is mapped to a depth of 20 ft on the Minnesota DNR survey and covers about 157 acres in Washington County, Minnesota. Depths come from the Minnesota DNR survey of 1959.

Measured from the Minnesota DNR lake bathymetric contour survey.

Deepest mapped contour: 20 ft
Survey year: 1959
Surface area: 157 acres
Shoreline: 3.41 mi · irregular
Aquatic vegetation: 5% of surface · NDVI estimate
Public access: Trailer Launch · Demontreville Lake Public Water Access Site · Minnesota DNR site

Additional depth details4 contours

Contour depths: 0–20 ft
Recorded point soundings: 20 ft, 5 ft

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Location

Washington County, Minnesota · 15 nearest of 35 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: 45.02235, -92.93920
MN DNR lake ID: 82010100
Vertical exaggeration: 3.0×
Basemap: USDA NAIP · public domain
Model size: 2.3 MB

Paddling

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

56 / 100MixedData confidence: High

Lake De Montreville has a mixed natural and developed setting, generally sheltered geometry, substantial nearby higher-volume roads.

Why this score?5 components

Included in the index

Component	Rating	Points of weight	Measurement
Natural setting	Mixed	13.7 of 35	52% natural land cover within 150 m of shore (48% forest, 4% wetland; 33% developed)
Geometric wind exposure	Very Good	24.6 of 29	mean fetch 633 m · 25% of sampled water within 500 m of shelter · generally short 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	Good	15.0 of 18	1 DNR public access site · boat ramp
Road isolation	Modest	2.9 of 18	substantial nearby higher-volume roads · 32 MnDOT-classified segments within 1.2 km, peak 78,925 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 5% 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: Limited — 48% forest and 4% 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 2017–2025). Conditions change quickly — check current weather and local conditions before going out.

Fish you might catch

from DNR surveys

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

White Sucker

Hybrid Sunfish

Spotfin Shiner

Iowa Darter

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 2011

1,038Fish sampled

14Species

Gamefish Northern Pike 66 · Largemouth Bass 42 · Walleye 3

Panfish Bluegill 600 · Black Crappie 68 · Hybrid Sunfish 66

All survey species14 species

Gamefish

Northern Pike66 caught · to 35″

Largemouth Bass42 caught · to 18″

Walleye3 caught · to 21″

Panfish

Bluegill600 caught · to 6″

Black Crappie68 caught · to 12″

Hybrid Sunfish66 caught · to 8″

Pumpkinseed57 caught · to 8″

Yellow Perch55 caught · to 8″

Green Sunfish13 caught

Bullhead & catfish

Black Bullhead31 caught · to 13″

Yellow Bullhead27 caught · to 13″

Forage & nongame

White Sucker5 caught · to 20″

Spotfin Shiner3 caught

Iowa Darter2 caught

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

Infested waters listing

2 confirmed

Mussels & snails

Zebra MusselConfirmed in this water in 2025 (listed 2025).

Plants & algae

Eurasian WatermilfoilConfirmed in this water in 2008 (listed 2009).

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

Lake De Montreville — common questions

How deep is Lake De Montreville?

The deepest contour on the Minnesota DNR bathymetric survey of Lake De Montreville 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 Lake De Montreville?

Lake De Montreville covers about 157 acres in Washington County, Minnesota.

What fish are in Lake De Montreville?

Species with survey, catch or recent-stocking evidence include largemouth bass, northern pike, walleye, black bullhead, black crappie, bluegill. The page lists all 14 species and the evidence behind each.

Is there public access to Lake De Montreville?

Yes. The Minnesota DNR lists a public access site on Lake De Montreville: a boat ramp with restrooms. It is administered by the DNR Division of Parks and Trails. DNR directions: "4 mi NW of the city of Lake Elmo, on Demontreville Tr (Cnty Rd 13) to NW shore."

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