Lac Duca
48.8611° N, 73.1689° W
Depth contours from the 1969 government survey. Not for navigation.
Download the depth map (SVG)Lac Duca, Quebec. 48.8611° N, 73.1689° W
Maximum depth 6 m (1969 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/qc/lac-duca/, 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 Duca is 6 m deep at its deepest point, shallower than 89% of the 1,506 surveyed lakes in Quebec. It covers 0.61 km² and lies 17 km southeast of Poisson-Blanc.
- Maximum depth
- 6 msurveyed 1969
- shallower than 89% of the 1,506 surveyed lakes in Quebec
- Area
- 0.61 km²
- larger than 66% of the 29,407 lakes in Quebec
- Shoreline
- 4.4 km
- longer than 56% of the 29,407 lakes in Quebec
- Elevation
- 432 m
Today on the water
5.8 °C
Observed at Gouin (Réservoir), as of 3:00 p.m. EDT
calm Estimated waves, next 12 hours: up to 0.1 m. Around 4 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.
| Time | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. | 7 a.m. | 10 a.m. | 1 p.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | NW 20 | W 20 | W 15 | W 10 | W 10 | var. 5 | var. 5 | S 10 |
| Gusts km/h | 40 | |||||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | ||||
| Temp. °C | 5 | 3 | 1 | 0 | -1 | -1 | 3 | 7 |
| Precip. % | 30 | 30 | 30 | 0 | 0 | 0 | 0 | 0 |
Today: Mainly cloudy with 30 percent chance of showers. Wind northwest 20 km/h gusting to 40. High plus 5. UV index 3 or moderate.
Weather: Gouin (Réservoir) (local forecast), as of 3:04 p.m. EDT
Sun and moon
- Civil dawn
- 6:32 a.m.
- Sunrise
- 7:04 a.m.
- Sunset
- 6:14 p.m.
- Civil dusk
- 6:46 p.m.
- Moonrise
- 5:53 a.m.
- Moonset
- 5:32 p.m.
- Moon
- Waning crescent, 1% lit
Depth
61% of Lac Duca is shallower than 3 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 1969 records a maximum depth of 6 m, drawn from 6 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.