Lac aux Bois Francs
46.3487° N, 74.8819° W
Depth contours from the 2020 government survey. Not for navigation.
Download the depth map (SVG)Lac aux Bois Francs, Quebec. 46.3487° N, 74.8819° W
Maximum depth 27.6 m (2020 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/qc/lac-aux-bois-francs/, 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.
- 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).
Lac aux Bois Francs is 27.6 m deep at its deepest point, deeper than 79% of the 1,506 surveyed lakes in Quebec. It covers 1.25 km² and lies beside Lac-Castor.
- Maximum depth
- 27.6 msurveyed 2020
- deeper than 79% of the 1,506 surveyed lakes in Quebec
- Area
- 1.25 km²
- larger than 78% of the 29,407 lakes in Quebec
- Shoreline
- 10.2 km
- longer than 78% of the 29,407 lakes in Quebec
- Water clarity
- 3.2 mSecchi depth, 2025
- less clear than 63% of the 805 monitored lakes in Quebec
- Elevation
- 284 m
Today on the water
2.7 °C
Observed at Mont-Tremblant, as of 6:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the west: the west shore is sheltered, waves build toward the east shore.
| Time | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 10 | W 10 | W 20 | W 20 | W 10 | W 10 | NW 10 | NW 10 |
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | |||
| Temp. °C | 7 | 9 | 9 | 8 | 6 | 3 | 1 | -1 |
| Precip. % | 40 | 40 | 40 | 40 | 0 | 0 | 0 | 0 |
Today: A mix of sun and cloud with 40 percent chance of showers. Wind becoming west 20 km/h near noon. High 9. UV index 3 or moderate.
Weather: Mont-Tremblant (local forecast), as of 6:00 a.m. EDT
Sun and moon
- Civil dawn
- 6:38 a.m.
- Sunrise
- 7:08 a.m.
- Sunset
- 6:23 p.m.
- Civil dusk
- 6:54 p.m.
- Moonrise
- 5:59 a.m.
- Moonset
- 5:42 p.m.
- Moon
- Waning crescent, 1% lit
Depth
52% of Lac aux Bois Francs 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 2020 records a maximum depth of 27.6 m, drawn from 34 depth contours.
- Download the depth map (SVG)Printing this page gives the map on one sheet, with scale and sources.
- Official government depth map (PDF)
Not for navigation. Depths are from government surveys and may be outdated.
Water
Trophic status from the latest monitoring: mesotrophic.
Clarity was measured with a Secchi disk in 9 years between 2017 and 2025; the latest annual mean is 3.2 m.