Lac Fronsac
47.6244° N, 71.0411° W
Depth contours from the 1968 government survey. Not for navigation.
Download the depth map (SVG)Lac Fronsac, Quebec. 47.6244° N, 71.0411° W
Maximum depth 15.8 m (1968 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/qc/lac-fronsac/, 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 Fronsac is 15.8 m deep at its deepest point, shallower than 53% of the 1,506 surveyed lakes in Quebec. It covers 3.86 km² and lies 14 km northeast of L'Étape.
- Maximum depth
- 15.8 msurveyed 1968
- shallower than 53% of the 1,506 surveyed lakes in Quebec
- Area
- 3.86 km²
- larger than 89% of the 29,407 lakes in Quebec
- Shoreline
- 25.5 km
- longer than 91% of the 29,407 lakes in Quebec
- Elevation
- 820 m
Today on the water
3.2 °C
Observed at Laurentides (Réserve faunique), as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 9 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.
| Time | 4 a.m. | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 10 | W 10 | W 20 | W 20 | W 20 | W 20 | W 20 | NW 20 |
| Gusts km/h | 40 | 40 | 40 | 40 | 40 | |||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | ||||
| Temp. °C | 3 | 2 | 2 | 2 | 2 | 1 | 0 | -1 |
| Precip. % | 60 | 40 | 40 | 40 | 40 | 30 | 30 | 30 |
Tonight: Mainly cloudy with 60 percent chance of rain showers or flurries. Risk of a thunderstorm early this evening. Low plus 2.
Weather: Laurentides (Réserve faunique) (local forecast), as of 3:03 a.m. EDT
Sun and moon
- Civil dawn
- 6:23 a.m.
- Sunrise
- 6:54 a.m.
- Sunset
- 6:07 p.m.
- Civil dusk
- 6:38 p.m.
- Moonrise
- 5:44 a.m.
- Moonset
- 5:25 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
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 1968 records a maximum depth of 15.8 m, drawn from 20 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.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.