Map of Grand lac Touladi with depth contours

Grand lac Touladi

47.7304° N, 68.7562° W

Depth contours from the 1974 government survey. Not for navigation.

Download the depth map (SVG)

Grand lac Touladi is 18.3 m deep at its deepest point, deeper than 55% of the 1,506 surveyed lakes in Quebec. It covers 8.15 km² and lies 4.9 km west of Rang-Saint-Grégoire.

Maximum depth
18.3 msurveyed 1974
deeper than 55% of the 1,506 surveyed lakes in Quebec
Area
8.15 km²
larger than 94% of the 29,407 lakes in Quebec
Shoreline
27.6 km
longer than 91% of the 29,407 lakes in Quebec
Elevation
157 m

Today on the water

8 °C

Wind SW 12 km/h

Observed at Temiscouata, as of 5:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.3 m. Around 9 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Hourly forecast, next 24 hours
Time6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.
Wind km/hW 15NW 20NW 20NW 20W 20W 20W 20W 20
Gusts km/h40404040
Waves (est.) m0.20.30.30.30.2
Temp. °C38996544
Precip. %03030300000

Today: A mix of sun and cloud. 30 percent chance of showers late this morning and this afternoon. Wind becoming northwest 20 km/h this morning. High 10. UV index 3 or moderate.

Weather: Temiscouata (local forecast), as of 5:02 a.m. EDT

Sun and moon

Civil dawn
6:14 a.m.
Sunrise
6:45 a.m.
Sunset
5:58 p.m.
Civil dusk
6:29 p.m.
Moonrise
5:34 a.m.
Moonset
5:16 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Edmundston, as of 4:00 a.m. EDT

Data Source: Environment and Climate Change Canada. Local times.

How waves are estimated

Significant wave height from the forecast hourly wind and the open-water distance (fetch) upwind, using the SMB method (US Army Corps of Engineers Shore Protection Manual, 1984), rounded up to the next 0.1 m. It is not a measurement: gusts, leftover swell and shoals can make water rougher. Under 0.2 m: calm; 0.2–0.5 m: choppy; over 0.5 m: rough.

Depth

27% of Grand lac Touladi is shallower than 3 m, and 24% 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 1974 records a maximum depth of 18.3 m, drawn from 19 depth contours.

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 Depths are from government surveys and may be outdated.

Photos

Grand lac Touladi 02
Photo: Fralambert, CC BY-SA 4.0, via Wikimedia Commons