Map of Darkwater Lake with depth contours

Darkwater Lake

48.2985° N, 91.7985° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Darkwater Lake is 45.7 m deep at its deepest point, deeper than 92% of the 2,688 surveyed lakes in Ontario. It covers 4.76 km² and lies 26 km east of Lac la Croix.

Maximum depth
45.7 m
deeper than 92% of the 2,688 surveyed lakes in Ontario
Area
4.76 km²
larger than 91% of the 18,731 lakes in Ontario
Shoreline
25.7 km
longer than 91% of the 18,731 lakes in Ontario
Elevation
376 m

Today on the water

0.4 °C

Wind ENE 2 km/h

Observed at Atikokan, as of 8:00 a.m. CDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 7 p.m., wind from the southeast: the southeast shore is sheltered, waves build toward the northwest shore.

Hourly forecast, next 24 hours
Time9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.6 a.m.
Wind km/hvar. 5var. 5SE 10SE 10SE 20SE 20SE 20SE 20
Gusts km/h40404040
Waves (est.) m0.10.10.10.1
Temp. °C4111513108910
Precip. %00000000

Today: Increasing cloudiness this morning. Wind up to 15 km/h. High 16. Wind chill minus 4 this morning. UV index 3 or moderate.

Weather: Atikokan (local forecast), as of 8:03 a.m. CDT

Sun and moon

Civil dawn
6:46 a.m.
Sunrise
7:18 a.m.
Sunset
6:29 p.m.
Civil dusk
7:00 p.m.
Moonrise
6:11 a.m.
Moonset
5:48 p.m.
Moon
Waning crescent, 1% lit

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

43% of Darkwater Lake is deeper than 20 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 records a maximum depth of 45.7 m, drawn from 18 depth contours.

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 Depths are from government surveys and may be outdated.