Map of Robertson Lake with depth contours

Robertson Lake

46.7806° N, 84.2664° W

Depth contours from the 2024 government survey. Not for navigation.

Download the depth map (SVG)

Robertson Lake is 21 m deep at its deepest point, deeper than 61% of the 2,688 surveyed lakes in Ontario. It covers 1.39 km² and lies 5.1 km north of Bourdages Corner.

Government surveys have recorded 8 fish species here, including lake trout, rainbow trout and brook trout.

Maximum depth
21 msurveyed 2024
deeper than 61% of the 2,688 surveyed lakes in Ontario
Area
1.39 km²
larger than 74% of the 18,731 lakes in Ontario
Shoreline
7.3 km
longer than 64% of the 18,731 lakes in Ontario
Fish species
8
more than 65% of the 2,454 surveyed lakes in Ontario
Elevation
264 m

Today on the water

10.5 °C

Partly CloudyWind WNW 32 km/h

Observed at Sault Ste. Marie, as of 7:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 11 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

Hourly forecast, next 24 hours
Time8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.5 a.m.
Wind km/hvar. 5W 20W 20var. 5SE 10SE 10SE 10SE 20
Gusts km/h404040
Waves (est.) m0.10.20.20.10.1
Temp. °C1011131310737
Precip. %1010000000

Today: A mix of sun and cloud with 30 percent chance of showers early this morning. Becoming sunny this afternoon. Wind becoming west 20 km/h gusting to 40 late this morning. High 13. UV index 3 or moderate.

Weather: Sault Ste. Marie (local forecast), as of 7:05 a.m. EDT

Sun and moon

Civil dawn
7:16 a.m.
Sunrise
7:46 a.m.
Sunset
7:01 p.m.
Civil dusk
7:31 p.m.
Moonrise
6:39 a.m.
Moonset
6:19 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Sault Ste. Marie, as of 7:00 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

72% of Robertson Lake 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 2024 records a maximum depth of 21 m, drawn from 25 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 30 government surveys (2015–2018) that recorded them.

  • Lake Trout26 of 30
  • Rainbow TroutStocked9 of 30
  • Brook Trout8 of 30
  • Cisco8 of 30
Forage fish and other species (4)

Forage fish

  • Blacknose Dace 1
  • Creek Chub 1
  • Longnose Dace 1

Other

  • White Sucker 15

Numbers are the surveys that recorded each species.

Stocking

Rainbow Trout1,950 fish in 2 years, most recently 2019

All stocking records (3)
YearSpeciesFishStage
2019Rainbow Trout500Yearlings
2018Rainbow Trout1,400Yearlings
2018Rainbow Trout50Adult

Fishing regulations: Fisheries Management Zone 10. Check seasons and limits before you fish.

Getting on the water

1 listed boat launch; 1 with parking listed. marks launches on the map.