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Map of Dunc Lake with depth contours

Dunc Lake

48.7146° N, 85.6988° W

Depth contours from the 1972 government survey. Not for navigation.

Download the depth map (SVG)

Dunc Lake, Ontario. 48.7146° N, 85.6988° W

Maximum depth 18.3 m (1972 survey). Scale bar on the map.

Not for navigation. Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/dunc-lake/, compiled October 9, 2026

  • Canadian Geographical Names Database, Natural Resources Canada. Contains information licensed under the Open Government Licence – Canada.
  • HydroLAKES v1.0, Messager et al. 2016 / WWF HydroSHEDS. Licensed under CC BY 4.0.
  • Census boundaries and population, 2021, Statistics Canada. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada.
  • Aquatic Resource Area survey points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fishing access points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fisheries Management Zones, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Bathymetry lines and survey index, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • City page weather forecasts and alerts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).

Dunc Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 1.94 km² and lies 4.5 km northwest of Mobert.

Government surveys have recorded 8 fish species here, including northern pike, walleye and yellow perch.

Maximum depth
18.3 msurveyed 1972
deeper than 54% of the 2,688 surveyed lakes in Ontario
Area
1.94 km²
larger than 80% of the 18,731 lakes in Ontario
Shoreline
6.3 km
longer than 59% of the 18,731 lakes in Ontario
Fish species
8
more than 65% of the 2,454 surveyed lakes in Ontario
Elevation
322 m

Today on the water

5 °C

Mostly CloudyWind NNW 7 km/h

Observed at White River, as of 4:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 11 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

Time5 a.m.8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.
Wind km/hNW 10var. 5W 20W 20SW 10SE 10SE 10SE 10
Waves (est.) m0.10.10.20.2
Temp. °C4361011766
Precip. %3000000020

Tonight: Mainly cloudy with 60 percent chance of showers. Wind west 20 km/h gusting to 40 becoming light this evening. Low plus 3.

Weather: White River (local forecast), as of 4:00 a.m. EDT

Sun and moon

Civil dawn
7:22 a.m.
Sunrise
7:54 a.m.
Sunset
7:05 p.m.
Civil dusk
7:36 p.m.
Moonrise
6:46 a.m.
Moonset
6:23 p.m.
Moon
Waning crescent, 1% lit

Data Source: Environment and Climate Change Canada. Local times.

How waves are estimated

Significant wave height from the forecast hourly wind and the open-water distance (fetch) upwind, using the SMB method (US Army Corps of Engineers Shore Protection Manual, 1984), rounded up to the next 0.1 m. It is not a measurement: gusts, leftover swell and shoals can make water rougher. Under 0.2 m: calm; 0.2–0.5 m: choppy; over 0.5 m: rough.

Depth

49% of Dunc Lake is shallower than 3 m, and 14% is deeper than 10 m.

How to read it: the lake’s area is sorted from the shore to the deepest point. Where the curve is flat, large areas share one depth (flats and weed beds); where it drops, depth changes quickly (drop-offs).

The government depth survey from 1972 records a maximum depth of 18.3 m, drawn from 8 depth contours.

Not for navigation. Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 6 government surveys (2017–2018) that recorded them.

  • Northern Pike4 of 6
  • Walleye4 of 6
  • Yellow Perch4 of 6
  • Burbot1 of 6
Forage fish and other species (4)

Forage fish

  • Blacknose Shiner 4
  • Slimy Sculpin 3
  • Spottail Shiner 3

Other

  • White Sucker 3

Numbers are the surveys that recorded each species.

Fishing regulations: Fisheries Management Zone 7. Check seasons and limits before you fish.

Getting on the water

3 listed boat launches; 1 with parking listed. marks launches on the map.

North shore

Northeast shore

Northwest shore