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Map of Mountain Lake

Mountain Lake

44.7041° N, 81.0496° W

Shoreline and neighbouring water from open government data.

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Mountain Lake, Ontario. 44.7041° N, 81.0496° W

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/mountain-lake-near-owen-sound/, 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.
  • Fisheries Management Zones, 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).

Mountain Lake covers 2.48 km², making it larger than 84% of the 18,731 lakes in Ontario. It lies 2.8 km southwest of Wolseley.

Government surveys have recorded 13 fish species here, including pumpkinseed, northern pike and rock bass.

Area
2.48 km²
larger than 84% of the 18,731 lakes in Ontario
Shoreline
19.4 km
longer than 87% of the 18,731 lakes in Ontario
Fish species
13
more than 84% of the 2,454 surveyed lakes in Ontario
Elevation
226 m

Today on the water

9 °C

Mostly CloudyWind W 5 km/h

Observed at Wiarton, as of 3:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.3 m. Around 9 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Time4 a.m.7 a.m.10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.
Wind km/hNW 20NW 20NW 30NW 30NW 30NE 10E 10SE 10
Gusts km/h4040505050
Waves (est.) m0.20.20.30.30.3
Temp. °C461013151396
Precip. %4040402020000

Tonight: Partly cloudy with 60 percent chance of showers. Wind northwest 30 km/h gusting to 50. Low plus 4.

Weather: Wiarton (local forecast), as of 3:01 a.m. EDT

Sun and moon

Civil dawn
7:02 a.m.
Sunrise
7:32 a.m.
Sunset
6:50 p.m.
Civil dusk
7:19 p.m.
Moonrise
6:24 a.m.
Moonset
6:08 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.

Fish

Sport fish by the share of the 3 government surveys (1968–1974) that recorded them.

  • Pumpkinseed3 of 3
  • Northern Pike2 of 3
  • Rock Bass2 of 3
  • Smallmouth Bass1 of 3
  • Yellow Perch1 of 3
Forage fish and other species (8)

Forage fish

  • Iowa Darter 3
  • Blackchin Shiner 2
  • Blacknose Shiner 2
  • Bluntnose Minnow 2
  • Common Shiner 2
  • Golden Shiner 2
  • Finescale Dace 1

Other

  • White Sucker 1

Numbers are the surveys that recorded each species.

Fishing regulations: Fisheries Management Zone 16. Check seasons and limits before you fish.