Map of Steep Rock Lake with depth contours

Steep Rock Lake

48.7967° N, 91.6697° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Steep Rock Lake is 14 m deep at its deepest point, shallower than 58% of the 2,688 surveyed lakes in Ontario. It covers 6.28 km² and lies 24 km west of Sapawe.

Government surveys have recorded 14 fish species here, including northern pike, cisco and walleye.

Maximum depth
14 m
shallower than 58% of the 2,688 surveyed lakes in Ontario
Area
6.28 km²
larger than 93% of the 18,731 lakes in Ontario
Shoreline
39.9 km
longer than 94% of the 18,731 lakes in Ontario
Fish species
14
more than 86% of the 2,454 surveyed lakes in Ontario
Elevation
389 m

Today on the water

-0.4 °C

Wind calmfeels like -2 °C

Observed at Atikokan, as of 6:00 a.m. EST

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
Time7 a.m.10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.4 a.m.
Wind km/hvar. 5var. 5SE 10SE 10SE 20SE 20SE 20SE 20
Gusts km/h40404040
Waves (est.) m0.10.10.10.10.2
Temp. °C-17131612989
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 6:02 a.m. EST

Sun and moon

Civil dawn
6:46 a.m.
Sunrise
7:18 a.m.
Sunset
6:28 p.m.
Civil dusk
7:00 p.m.
Moonrise
6:11 a.m.
Moonset
5:47 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

48% of Steep Rock Lake is deeper than 5 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 14 m, drawn from 76 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 23 government surveys (2011–2011) that recorded them.

  • Northern Pike17 of 23
  • Cisco16 of 23
  • Walleye16 of 23
  • Yellow Perch13 of 23
  • Smallmouth Bass4 of 23
  • Rock Bass2 of 23
  • Lake Whitefish1 of 23
  • Pumpkinseed1 of 23
Forage fish and other species (6)

Forage fish

  • Spottail Shiner 6
  • Mimic Shiner 4
  • Trout-Perch 4
  • Blacknose Shiner 1
  • Emerald Shiner 1

Other

  • White Sucker 10

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 6 species from Steep Rock Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Lake Whitefish45-50 cm1616Precautionary
Northern Pike55-60 cm124Mercury
Smallmouth Bass35-40 cm168Mercury
Walleye40-45 cm84Mercury
Cisco (Lake Herring)35-40 cm1616Precautionary
White Sucker40-45 cm1616Precautionary

* As defined in the guide, including children and people who are or may become pregnant. Limits are for the length the guide lists most often; they change with the size of the fish. Read the official guide

Fishing regulations: Fisheries Management Zone 5. Check seasons and limits before you fish.

Getting on the water

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