Map of Bornite Lake with depth contours

Bornite Lake

50.3256° N, 93.4628° W

Depth contours from the 1979 government survey. Not for navigation.

Download the depth map (SVG)

Bornite Lake is 20 m deep at its deepest point, deeper than 60% of the 2,688 surveyed lakes in Ontario. It covers 5.1 km² and lies 20 km west of Perrault Falls.

Maximum depth
20 msurveyed 1979
deeper than 60% of the 2,688 surveyed lakes in Ontario
Area
5.1 km²
larger than 91% of the 18,731 lakes in Ontario
Shoreline
17.5 km
longer than 85% of the 18,731 lakes in Ontario
Elevation
365 m

Today on the water

0.6 °C

Wind ENE 2 km/h

Observed at Ear Falls, as of 4:00 a.m. CDT

choppy Estimated waves, next 12 hours: up to 0.3 m. Around 4 p.m., wind from the southeast: the southeast shore is sheltered, waves build toward the northwest shore.

Hourly forecast, next 24 hours
Time5 a.m.8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.
Wind km/hS 10S 10S 20E 10SE 30SE 30SE 30SE 20
Gusts km/h50505040
Waves (est.) m0.10.10.20.10.3
Temp. °C13810111098
Precip. %2020206060601010

Tonight: A few clouds. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low plus 1.

Weather: Ear Falls (local forecast), as of 4:02 a.m. CDT

Sun and moon

Civil dawn
6:54 a.m.
Sunrise
7:26 a.m.
Sunset
6:34 p.m.
Civil dusk
7:06 p.m.
Moonrise
6:19 a.m.
Moonset
5:53 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

15% of Bornite Lake is shallower than 3 m, and 58% 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 1979 records a maximum depth of 20 m, drawn from 18 depth contours.

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 Depths are from government surveys and may be outdated.