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Map of Ironside Lake

Ironside Lake

46.8386° N, 81.0617° W

Shoreline and neighbouring water from open government data.

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Ironside Lake, Ontario. 46.8386° N, 81.0617° W

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/ironside-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.
  • 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.
  • Lake Partner Program, Ontario Ministry of the Environment, Conservation and Parks. 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).

Ironside Lake covers 1.29 km², making it larger than 73% of the 18,731 lakes in Ontario. It lies 1.3 km southwest of Sellwood.

Area
1.29 km²
larger than 73% of the 18,731 lakes in Ontario
Shoreline
15.9 km
longer than 84% of the 18,731 lakes in Ontario
Water clarity
3.4 mSecchi depth, 2013
less clear than 55% of the 1,251 monitored lakes in Ontario
Elevation
361 m

Today on the water

4.1 °C

Mostly CloudyWind S 4 km/h

Observed at Sudbury (Greater), as of 4:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 8 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Time5 a.m.8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.
Wind km/hW 10NW 20NW 20NW 20NW 10var. 5SE 10SE 10
Gusts km/h4040
Waves (est.) m0.10.20.20.2
Temp. °C5481113865
Precip. %3030202020000

Tonight: Mainly cloudy with 30 percent chance of showers. Wind west 20 km/h gusting to 40 becoming light this evening. Low plus 4.

Weather: Sudbury (Greater) (local forecast), as of 4:01 a.m. EDT

Sun and moon

Civil dawn
7:03 a.m.
Sunrise
7:33 a.m.
Sunset
6:48 p.m.
Civil dusk
7:18 p.m.
Moonrise
6:25 a.m.
Moonset
6:06 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Sudbury, as of 4:00 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.

Water

Clarity was measured with a Secchi disk in 9 years between 2004 and 2013; the latest annual mean is 3.4 m.

Water clarity (Secchi depth, m)
Total phosphorus (µg/L)

Getting on the water

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