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Map of Lower Island Lake with depth contours

Lower Island Lake

46.6657° N, 84.2743° W

Depth contours from the 2022 government survey. Not for navigation.

Download the depth map (SVG)

Lower Island Lake, Ontario. 46.6657° N, 84.2743° W

Maximum depth 8 m (2022 survey). Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/lower-island-lake/, compiled October 9, 2026

  • Canadian Geographical Names Database, Natural Resources Canada. Contains information licensed under the Open Government Licence – Canada.
  • HydroLAKES v1.0, Messager et al. 2016 / WWF HydroSHEDS. Licensed under CC BY 4.0.
  • Census boundaries and population, 2021, Statistics Canada. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada.
  • Aquatic Resource Area survey points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fishing access points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fisheries Management Zones, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Bathymetry lines and survey index, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • City page weather forecasts and alerts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
  • Air Quality Health Index observations and forecasts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).

Lower Island Lake is 8 m deep at its deepest point, shallower than 79% of the 2,688 surveyed lakes in Ontario. It covers 0.58 km² and lies 1 km southwest of Island Lake.

Government surveys have recorded 6 fish species here, including rock bass, smallmouth bass and yellow perch.

Maximum depth
8 msurveyed 2022
shallower than 79% of the 2,688 surveyed lakes in Ontario
Area
0.58 km²
larger than 54% of the 18,731 lakes in Ontario
Shoreline
7.2 km
longer than 64% of the 18,731 lakes in Ontario
Fish species
6
more than 57% of the 2,454 surveyed lakes in Ontario
Elevation
317 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

calm Estimated waves, next 12 hours: up to 0.1 m. Wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

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.) m0.10.10.10.1
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 6:00 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

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 2022 records a maximum depth of 8 m, drawn from 19 depth contours.

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

Fish

Sport fish by the share of the 16 government surveys (2020–2021) that recorded them.

  • Rock Bass14 of 16
  • Smallmouth Bass14 of 16
  • Yellow Perch8 of 16
  • Lake Trout1 of 16
Other species (2)
  • White Sucker 10
  • Brown Bullhead 9

Numbers are the surveys that recorded each species.

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

Getting on the water

1 listed access point; 1 with parking listed.