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Lac Therrien

47.0311° N, 70.1102° W

Lac Therrien, Quebec. 47.0311° N, 70.1102° W

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/qc/lac-therrien/, 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.
  • Géobase des bathymétries de lac du Québec (GBLQ), 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).

Lac Therrien covers 1.36 km², Quebec. It lies 35 km northeast of Montmagny.

Area
1.36 km²
Shoreline
6.5 km
Elevation
378 m

Today on the water

10.1 °C

Wind WSW 17 km/h

Observed at L'Islet, as of 10:00 a.m. EDT

Wind from the west: the west shore is the sheltered side.

Time11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.5 a.m.8 a.m.
Wind km/hSW 20SW 20SW 20SW 20SW 20SW 20SW 20W 20
Gusts km/h40404040404040
Temp. °C101112108875
Precip. %30303000000

Today: A mix of sun and cloud with 30 percent chance of showers. Wind southwest 20 km/h gusting to 40. High 12. UV index 3 or moderate.

Weather: L'Islet (local forecast), as of 10:00 a.m. EDT

Sun and moon

Civil dawn
6:19 a.m.
Sunrise
6:50 a.m.
Sunset
6:04 p.m.
Civil dusk
6:34 p.m.
Moonrise
5:39 a.m.
Moonset
5:22 p.m.
Moon
Waning crescent, 1% lit

Depth

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 Depths are from government surveys and may be outdated.