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Map of Lac Lacaille

Lac Lacaille

45.7063° N, 76.1717° W

Shoreline and neighbouring water from open government data.

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Lac Lacaille, Quebec. 45.7063° N, 76.1717° W

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/qc/lac-lacaille/, 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.
  • États trophiques des lacs (RSVL), Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs. Licensed under CC BY 4.0. Source: Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP), Données Québec.
  • 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).
  • Air Quality Health Index observations and forecasts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).

Lac Lacaille covers 0.29 km², making it smaller than 53% of the 29,407 lakes in Quebec. It lies 3.4 km northeast of Lac-des-Loups.

Area
0.29 km²
smaller than 53% of the 29,407 lakes in Quebec
Shoreline
4.4 km
longer than 56% of the 29,407 lakes in Quebec
Water clarity
5.8 mSecchi depth, 2025
clearer than 82% of the 805 monitored lakes in Quebec
Elevation
232 m

Today on the water

YELLOW ADVISORY - FROST · issued 4:39 a.m. EDT
Temperatures will drop to near the freezing mark overnight tonight.

Take preventative measures to protect cold-sensitive plants, trees, and crops.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to QCstorm@ec.gc.ca or post reports on social media using #QCStorm.

Official alert on weather.gc.ca · expires 8:39 p.m. EDT

4.6 °C

ClearWind W 5 km/h

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

calm Estimated waves, next 12 hours: up to 0.1 m. Around 6 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast 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/hNW 10NW 20NW 20NW 20NW 10var. 5var. 5var. 5
Waves (est.) m0.10.10.10.10.1
Temp. °C689109521
Precip. %303030300000

Today: A mix of sun and cloud with 30 percent chance of showers. Wind becoming northwest 20 km/h this morning. High 11. UV index 3 or moderate.

Weather: Chelsea (local forecast), as of 5:02 a.m. EDT

Sun and moon

Civil dawn
6:43 a.m.
Sunrise
7:13 a.m.
Sunset
6:29 p.m.
Civil dusk
6:59 p.m.
Moonrise
6:04 a.m.
Moonset
5:48 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.

Water

Trophic status from the latest monitoring: oligo-mesotrophic (transition).

Clarity was measured with a Secchi disk in 15 years between 2009 and 2025; the latest annual mean is 5.8 m.

Water clarity (Secchi depth, m)
Total phosphorus (µg/L)