Loon Lake
44.7781° N, 76.2353° W
Depth contours from the 1969 government survey. Not for navigation.
Download the depth map (SVG)Loon Lake, Ontario. 44.7781° N, 76.2353° W
Maximum depth 18.3 m (1969 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/loon-lake-near-perth/, 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.
- 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).
Loon Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 0.29 km² and lies 5.1 km west of Scotch Point.
- Maximum depth
- 18.3 msurveyed 1969
- deeper than 54% of the 2,688 surveyed lakes in Ontario
- Area
- 0.29 km²
- smaller than 67% of the 18,731 lakes in Ontario
- Shoreline
- 3.9 km
- shorter than 62% of the 18,731 lakes in Ontario
- Elevation
- 131 m
Today on the water
10.2 °C
Observed at Westport, as of 3:00 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 | 4 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/h | W 15 | W 15 | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.2 | ||||
| Temp. °C | 4 | 5 | 9 | 12 | 14 | 11 | 7 | 3 |
| Precip. % | 20 | 40 | 40 | 40 | 40 | 20 | 20 | 0 |
Tonight: Partly cloudy. 60 percent chance of showers this evening. Risk of a thunderstorm early this evening. Wind west 30 km/h gusting to 50 becoming light this evening. Low plus 4.
Weather: Westport (local forecast), as of 3:02 a.m. EDT
Sun and moon
- Civil dawn
- 6:43 a.m.
- Sunrise
- 7:12 a.m.
- Sunset
- 6:30 p.m.
- Civil dusk
- 6:59 p.m.
- Moonrise
- 6:04 a.m.
- Moonset
- 5:49 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
2 low risk
Kingston, as of 2:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
62% of Loon Lake is shallower than 3 m, and 11% is deeper than 10 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 from 1969 records a maximum depth of 18.3 m, drawn from 11 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.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.