Ontario Lake Depths
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White Lake

Thunder Bay District, Ontario · MNRF bathymetric survey
45.7m Mapped depth
150 ft
6,204 ha 10 contours Fishing access
Paddling Index51Modestwooded shoreline
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Depth scale

The lake

Survey readout

White Lake is mapped to a depth of 45.7 m (150 ft) on the Ontario MNRF survey and covers about 6,204 ha (15,329 acres) in Thunder Bay District, Ontario. Depths come from the Ontario MNRF survey of 1972.

Measured from the Ontario MNRF bathymetry survey.

Deepest mapped contour
45.7 m (150 ft)
Survey year
1972
Surface area
6,204 ha (15,329 acres)
Shoreline
171.8 km (106.8 mi) · irregular
Fishing access
4 MNRF fishing access points · 4 boat launches
Borders
Pic Mobert Reserve South · First Nation reserve · 4% of shoreline · First Nation rules may apply
Borders
Pic Mobert Reserve North · First Nation reserve · 3% of shoreline · First Nation rules may apply
Additional depth details10 contours
Contour depths
0–45.7 m (150 ft)
Deep-spot markers
45.7 m (150 ft), 30.5 m (100 ft), 18.3 m (60 ft), 15.2 m (50 ft), 15.2 m (50 ft), 15.2 m (50 ft)
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Chart data

Provenance

Sources: Ontario MNRF / LIO Bathymetry, Ontario FRI LiDAR DTM, OpenStreetMap (ODbL), Contains information licensed under the Open Government Licence – Ontario, Contains modified Copernicus Sentinel data (Sentinel-2), processed by ontariolakedepths.com.

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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 Ontario LiDAR (FRI DTM) elevation, with a Copernicus Sentinel-2 satellite basemap and OpenStreetMap shoreline. Colour shows surveyed depth; dark lines are the survey's own isobaths.

Coordinates
48.75438, -85.64148
MNRF lake ID
16-6003-54025
Vertical exaggeration
1.72× below the waterline; land at true scale
Basemap
Ontario FRI & Copernicus Sentinel-2 · ESA, via Microsoft Planetary Computer
Model size
2.1 MB

Check the source: this lake’s record (16-6003-54025) 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: 1972. This model was built 2026-10-02. Depths between contours are interpolated, not measured.

Paddling

Paddling Index methodology v1.0 · calculated 2026-09-16
51 / 100ModestData confidence: High

White Lake has a heavily wooded and largely undeveloped setting, long open-water fetch, substantial nearby higher-volume roads.

Why this score?5 components

Included in the index

ComponentRatingPoints of weightMeasurement
Natural settingExcellent32.6 of 3593% natural land cover within 150 m of shore (77% forest, 15% wetland; 5% developed)
Geometric wind exposureModest1.5 of 29mean fetch 5,255 m · 0% of sampled water within 500 m of shelter · long open-water fetch
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 accessGood15.0 of 184 MNRF fishing access points · boat ramp
Road isolationModest1.7 of 18substantial nearby higher-volume roads · 132 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
Low — wide enough that wakes disperse over most of the lake
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 — 77% forest and 15% wetland cover within 150 m of shore
Mapped wildlife habitat
Mapped — Ontario MNRF has mapped moose aquatic feeding areas within 1 km of this lake. These are habitat records from provincial surveys, not animal counts; areas with nothing mapped may still hold wildlife. · 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), Ontario MNRF Fishing Access Points (Open Government Licence – Ontario) (2026-09) 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.

Angler catch reports

Fish ON-Line · 2016–2024

What anglers say they caught here, logged trip by trip in Ontario’s Fish ON-Line app — most recently in September 2024.

6Trips logged
2Species
88Fish reported

Pictures are sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).

Walleye5 of 6 trips · 48 caught
Northern Pike5 of 6 trips · 40 caught

How people fish it: boat 100%
Catch rate: about 3.4 fish an hour, all species together (6 trips, 26 hours logged)
Kept: 11% of the fish reported; the rest were released

Trips are logged voluntarily by anglers in Ontario’s Fish ON-Line app. This is what people report catching, not a Ministry survey, and a species nobody has logged may still be here. Contains information licensed under the Open Government Licence – Ontario. Source: Ontario Ministry of Natural Resources, Fish ON-Line. A logged catch does not mean it is legal to catch or keep: check the Ontario Fishing Regulations Summary for this lake’s zone and exceptions.
Quick answers

White Lake — common questions

How deep is White Lake?

The deepest contour on the Ontario MNRF bathymetric survey of White Lake is 45.7 m (150 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 White Lake?

White Lake covers about 6,204 ha (15,329 acres) in Thunder Bay District, Ontario.

Is there public access to White Lake?

The Ontario MNRF lists 4 fishing access points within 100 m of the shoreline of White Lake: 4 boat launches. The list includes municipal and privately owned sites, and some may charge a fee or restrict parking, so it confirms a place anglers use rather than a public right of way. Check locally before you go.

Do First Nation rules apply on White Lake?

White Lake has 4% of its shoreline in Pic Mobert Reserve South, a First Nation reserve. Fishing, boating and access on reserve land and waters can be governed by the First Nation's own rules as well as Ontario's. Check with the First Nation before fishing or launching.