Mountain Lake
44.7092° N, 80.6968° W
Depth contours from the 1983 government survey. Not for navigation.
Download the depth map (SVG)Mountain Lake, Ontario. 44.7092° N, 80.6968° W
Maximum depth 3 m (1983 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/mountain-lake-2/, 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.
- 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).
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
Mountain Lake is 3 m deep at its deepest point, shallower than 96% of the 2,688 surveyed lakes in Ontario. It covers 0.99 km² and lies 4.2 km north of Morley.
Government surveys have recorded 6 fish species here, including yellow perch, walleye and smallmouth bass.
- Maximum depth
- 3 msurveyed 1983
- shallower than 96% of the 2,688 surveyed lakes in Ontario
- Area
- 0.99 km²
- larger than 67% of the 18,731 lakes in Ontario
- Shoreline
- 12.5 km
- longer than 79% of the 18,731 lakes in Ontario
- Fish species
- 6
- more than 57% of the 2,454 surveyed lakes in Ontario
- Elevation
- 233 m
Today on the water
7.8 °C
Observed at Owen Sound, as of 6:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.
| Time | 7 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/h | W 15 | NW 20 | NW 30 | NW 30 | NW 10 | var. 5 | var. 5 | SE 10 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | |||
| Temp. °C | 5 | 9 | 13 | 15 | 13 | 9 | 6 | 4 |
| Precip. % | 40 | 40 | 20 | 20 | 0 | 0 | 0 | 0 |
Today: A mix of sun and cloud with 40 percent chance of showers this morning. Clearing this afternoon. Wind becoming northwest 30 km/h gusting to 50 this morning. High 15. UV index 4 or moderate.
Weather: Owen Sound (local forecast), as of 6:01 a.m. EDT
Sun and moon
- Civil dawn
- 7:01 a.m.
- Sunrise
- 7:30 a.m.
- Sunset
- 6:48 p.m.
- Civil dusk
- 7:17 p.m.
- Moonrise
- 6:23 a.m.
- Moonset
- 6:07 p.m.
- Moon
- Waning crescent, 1% lit
Depth
The government depth survey from 1983 records a maximum depth of 3 m, drawn from 3 depth contours.
- Download the depth map (SVG)Printing this page gives the map on one sheet, with scale and sources.
Not for navigation. Depths are from government surveys and may be outdated.
Fish
Sport fish by the share of the 12 government surveys (1971–1992) that recorded them.
Forage fish and other species (3)
Forage fish
- Bluntnose Minnow 5
- Northern Pearl Dace 1
Other
- White Sucker 5
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 2 species from Mountain Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Smallmouth Bass | 35-40 cm | 12 | 4 | Mercury |
| Walleye | 40-45 cm | 8 | Do not eat | Mercury |
* 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 16. Check seasons and limits before you fish.