Lac du Portage
48.6536° N, 67.5927° W
Depth contours from the 1976 government survey. Not for navigation.
Download the depth map (SVG)Lac du Portage, Quebec. 48.6536° N, 67.5927° W
Maximum depth 22.8 m (1976 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/qc/lac-du-portage-near-matane/, 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).
- Photographs, Wikimedia Commons contributors. Each photo carries its own licence (CC0, public domain, CC BY or CC BY-SA), credited where shown.
Lac du Portage is 22.8 m deep at its deepest point, deeper than 70% of the 1,506 surveyed lakes in Quebec. It covers 1.43 km² and lies beside Lac-du-Portage.
- Maximum depth
- 22.8 msurveyed 1976
- deeper than 70% of the 1,506 surveyed lakes in Quebec
- Area
- 1.43 km²
- larger than 79% of the 29,407 lakes in Quebec
- Shoreline
- 7 km
- longer than 70% of the 29,407 lakes in Quebec
- Water clarity
- 4.8 mSecchi depth, 2025
- clearer than 68% of the 805 monitored lakes in Quebec
- Elevation
- 182 m
Today on the water
9 °C
Observed at Matane, as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.3 m. Around 4 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 30 | W 30 | W 30 | W 30 | W 30 | W 30 | W 30 | W 40 |
| Gusts km/h | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 60 |
| Waves (est.) m | 0.3 | 0.3 | 0.3 | 0.3 | ||||
| Temp. °C | 7 | 7 | 7 | 7 | 8 | 7 | 6 | 6 |
| Precip. % | 0 | 0 | 0 | 30 | 30 | 0 | 0 | 40 |
Tonight: A few showers ending near midnight then partly cloudy. Fog patches dissipating this evening. Wind becoming west 30 km/h gusting to 50 this evening. Temperature steady near 7.
Weather: Matane (local forecast), as of 3:05 a.m. EDT
Sun and moon
- Civil dawn
- 6:10 a.m.
- Sunrise
- 6:41 a.m.
- Sunset
- 5:52 p.m.
- Civil dusk
- 6:24 p.m.
- Moonrise
- 5:30 a.m.
- Moonset
- 5:10 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
49% of Lac du Portage 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 1976 records a maximum depth of 22.8 m, drawn from 8 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: oligo-mesotrophic (transition).
Clarity was measured with a Secchi disk in 19 years between 2005 and 2025; the latest annual mean is 4.8 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.