Ontario Lake Depths
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Mill Pond

Middlesex County, Ontario · MNRF bathymetric survey
3m Mapped depth
10 ft
7.0 ha 2 contours
Paddling Index64MixedMedium confidencesheltered geometry · away from major roads
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Depth scale

The lake

Survey readout

Mill Pond is mapped to a depth of 3 m (10 ft) on the Ontario MNRF survey and covers about 7.0 ha (17 acres) in Middlesex County, Ontario.

Measured from the Ontario MNRF bathymetry survey.

Deepest mapped contour
3 m (10 ft)
Surface area
7.0 ha (17 acres)
Shoreline
5.0 km (3.1 mi) · irregular
Fishing access
No MNRF fishing access point listed within 100 m (the list is incomplete)
Additional depth details2 contours
Contour depths
0–3 m (10 ft)
Deep-spot markers
3 m (10 ft)
Compare with another lake
Location
Foster PondsLake WhittakerMill Pond (this lake)
Middlesex County, Ontario · all 3 lakes · tap a dot for that lake
Chart data

Provenance

Sources: Ontario MNRF / LIO Bathymetry, OpenStreetMap (ODbL), Contains information licensed under the Open Government Licence – Ontario, Contains modified Copernicus Sentinel data (Sentinel-2), processed by ontariolakedepths.com, Copernicus DEM 30 m (© DLR/Airbus).

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Map details & sources5 sources

All layers registered to one bounding box; positions in WGS 84.

Survey-derived depth contours drape over Copernicus DEM (30 m) elevation, with a Copernicus Sentinel-2 satellite basemap and OpenStreetMap shoreline. Colour shows surveyed depth; dark lines are the survey's own isobaths.

Coordinates
42.88711, -81.46582
MNRF lake ID
17-4620-47486
Vertical exaggeration
3.0× below the waterline; land at true scale
Basemap
Copernicus Sentinel-2 · ESA, via Microsoft Planetary Computer
Model size
0.4 MB

Check the source: this lake’s record (17-4620-47486) in the Ontario MNRF bathymetry index, and the contour line layer the map is drawn from (Land Information Ontario open data, Open Government Licence – Ontario). Survey year: not recorded in the source. This model was built 2026-09-28. Depths between contours are interpolated, not measured.

Paddling

Paddling Index methodology v1.0 · calculated 2026-09-16
64 / 100MixedData confidence: Medium

Mill Pond has a mixed natural and developed setting, well sheltered geometry, limited nearby major-road exposure.

Why this score?5 components

Included in the index

ComponentRatingPoints of weightMeasurement
Natural settingMixed14.4 of 4334% natural land cover within 150 m of shore (31% forest, 2% wetland; 1% developed)
Geometric wind exposureExcellent35.7 of 36mean fetch 153 m · 100% of sampled water within 500 m of shelter · short fetch in most directions
Motor & speed rulesNot modelled—Canada publishes vessel motor and speed restrictions as federal legal schedules, not map data, so they are not part of the Ontario index. Check local signage and Transport Canada rules before going out.
Public accessNot listed—No publicly listed MNRF fishing access point within 100 m of this shoreline. Municipal, private and informal launches are not all in this source, so this is not evidence that access is poor — the component is excluded and the remaining weights are renormalized.
Road isolationVery Good14.2 of 21limited nearby major-road exposure · 24 Ontario Road Network segments within 1.2 km (traffic estimated from road class, not measured)

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
High — narrow throughout — passing wakes would reach most of the water
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 — 31% forest and 2% wetland cover within 150 m of shore
Mapped wildlife habitat
None mapped — Ontario MNRF has not mapped moose, deer or waterfowl habitat within 1 km of this lake. The province maps these areas where it has surveyed, so this is not evidence that wildlife is absent. · Ontario MNRF Wildlife Values Area. Contains information licensed under the Open Government Licence – Ontario.
How this index is calculated. The Paddling Index is a relative composite derived from lake geometry and public land-cover, access and road-network 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 Ontario lakes: natural setting 35%, geometric wind exposure 29%, public access 18%, road isolation 18%. Motor and speed restrictions are not modelled for Ontario, and road traffic is estimated from road class, not measured. Where a component has no data the remaining weights are renormalized and the confidence rating is lowered; below Medium confidence no number is shown. Ontario scores are relative to other Ontario lakes and are not directly comparable with Paddling Index scores on our sister sites, which use different data sources and include a watercraft-rules component. Sources: Ontario MNRF bathymetry outline (0 m contour or survey index polygon), Ontario Land Cover v1.0, Ontario MNRF (Open Government Licence – Ontario) (2020) and Ontario Road Network (Open Government Licence – Ontario); traffic estimated by road class, not measured (2026-09). Conditions change quickly — check current weather and local conditions before going out.
Quick answers

Mill Pond — common questions

How deep is Mill Pond?

The deepest contour on the Ontario MNRF bathymetric survey of Mill Pond is 3 m (10 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 Mill Pond?

Mill Pond covers about 7.0 ha (17 acres) in Middlesex County, Ontario.

Is there public access to Mill Pond?

No fishing access point for Mill Pond appears in the Ontario MNRF fishing access point list (within 100 m of the shoreline). That is not the same as the lake being private -- the MNRF list is incomplete, and many municipal, marina and private launches are not in it.