Map of Gullrock Lake with depth contours

Gullrock Lake

50.9611° N, 93.6449° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Gullrock Lake is 15.2 m deep at its deepest point, shallower than 55% of the 2,688 surveyed lakes in Ontario. It covers 61.6 km² and lies 11 km southeast of Red Lake.

Maximum depth
15.2 m
shallower than 55% of the 2,688 surveyed lakes in Ontario
Area
61.6 km²
larger than 99% of the 18,731 lakes in Ontario
Shoreline
113 km
longer than 98% of the 18,731 lakes in Ontario
Elevation
355 m

Today on the water

4.7 °C

ClearWind SSW 12 km/h

Observed at Red Lake, as of 2:00 a.m. CDT

choppy Estimated waves, next 12 hours: up to 0.4 m. Around 10 a.m., wind from the south: the south shore is sheltered, waves build toward the north shore.

Hourly forecast, next 24 hours
Time3 a.m.6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.
Wind km/hS 10S 10S 10S 20SE 20SE 20SE 20SE 20
Gusts km/h40404040
Waves (est.) m0.20.20.20.4
Temp. °C3259101098
Precip. %2020202060606010

Tonight: Partly cloudy. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low plus 1.

Weather: Red Lake (local forecast), as of 2:01 a.m. CDT

Sun and moon

Civil dawn
6:55 a.m.
Sunrise
7:28 a.m.
Sunset
6:34 p.m.
Civil dusk
7:07 p.m.
Moonrise
6:21 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

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 15.2 m, drawn from 110 depth contours.

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 Depths are from government surveys and may be outdated.