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Map of West Lacasse Lake with depth contours

West Lacasse Lake

49.329° N, 89.8202° W

Depth contours from the 1976 government survey. Not for navigation.

Download the depth map (SVG)

West Lacasse Lake, Ontario. 49.329° N, 89.8202° W

Maximum depth 15.2 m (1976 survey). Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/west-lacasse-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.
  • 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).

West Lacasse Lake is 15.2 m deep at its deepest point, shallower than 55% of the 2,688 surveyed lakes in Ontario. It covers 1.95 km² and lies 50 km northeast of Savanne.

Maximum depth
15.2 msurveyed 1976
shallower than 55% of the 2,688 surveyed lakes in Ontario
Area
1.95 km²
larger than 80% of the 18,731 lakes in Ontario
Shoreline
10.4 km
longer than 75% of the 18,731 lakes in Ontario
Elevation
478 m

Today on the water

-2.5 °C

Wind calmfeels like -3 °C

Observed at Upsala, as of 5:00 a.m. EDT

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

Time6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.
Wind km/hvar. 5var. 5S 20SE 20SE 20SE 20SE 20SE 20
Gusts km/h404040
Waves (est.) m0.10.10.20.20.2
Temp. °C-119141311109
Precip. %00000000

Tonight: Partly cloudy with 40 percent chance of showers early this evening then clear. Wind northwest 20 km/h becoming light this evening. Low minus 2.

Weather: Upsala (local forecast), as of 5:00 a.m. EDT

Sun and moon

Civil dawn
7:39 a.m.
Sunrise
8:11 a.m.
Sunset
7:20 p.m.
Civil dusk
7:52 p.m.
Moonrise
7:03 a.m.
Moonset
6:39 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

31% of West Lacasse Lake is shallower than 3 m, and 58% is deeper than 5 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 1976 records a maximum depth of 15.2 m, drawn from 10 depth contours.

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 Depths are from government surveys and may be outdated.

Getting on the water

1 listed boat launch. marks launches on the map.