Map of Heron Lake with depth contours

Heron Lake

48.9311° N, 92.6706° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Heron Lake is 77 m deep at its deepest point, deeper than 98% of the 2,688 surveyed lakes in Ontario. It covers 5.87 km² and lies 14 km north of Mine Centre.

Maximum depth
77 m
deeper than 98% of the 2,688 surveyed lakes in Ontario
Area
5.87 km²
larger than 92% of the 18,731 lakes in Ontario
Shoreline
37.5 km
longer than 94% of the 18,731 lakes in Ontario
Elevation
360 m

Today on the water

-1 °C

Wind calmfeels like -2 °C

Observed at Mine Centre, as of 5:00 a.m. CDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 10 a.m., wind from the southeast: the southeast shore is sheltered, waves build toward the northwest 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/hSE 10var. 5SE 15E 10SE 20SE 20SE 20SE 20
Gusts km/h40404040
Waves (est.) m0.10.10.20.10.2
Temp. °C36121615131012
Precip. %20202020202000

Today: A mix of sun and cloud. Wind becoming southeast 20 km/h gusting to 40 late this afternoon. High 17. UV index 3 or moderate.

Weather: Mine Centre (local forecast), as of 5:03 a.m. CDT

Sun and moon

Civil dawn
6:50 a.m.
Sunrise
7:22 a.m.
Sunset
6:32 p.m.
Civil dusk
7:04 p.m.
Moonrise
6:15 a.m.
Moonset
5:51 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

41% of Heron Lake is deeper than 30 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 77 m, drawn from 24 depth contours.

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 Depths are from government surveys and may be outdated.