Dyson Lake
45.216° N, 79.6526° W
Depth contours from the 1974 government survey. Not for navigation.
Download the depth map (SVG)Dyson Lake, Ontario. 45.216° N, 79.6526° W
Maximum depth 15.2 m (1974 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/dyson-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.
- 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).
Dyson Lake is 15.2 m deep at its deepest point, shallower than 55% of the 2,688 surveyed lakes in Ontario. It covers 0.94 km² and lies 4.3 km south of Rosseau.
- Maximum depth
- 15.2 msurveyed 1974
- shallower than 55% of the 2,688 surveyed lakes in Ontario
- Area
- 0.94 km²
- larger than 66% of the 18,731 lakes in Ontario
- Shoreline
- 5.8 km
- longer than 56% of the 18,731 lakes in Ontario
- Water clarity
- 4.8 mSecchi depth, 2019
- clearer than 76% of the 1,251 monitored lakes in Ontario
- Elevation
- 229 m
Today on the water
7 °C
Observed at Port Carling, as of 5:00 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 | 6 a.m. | 9 a.m. | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. | 3 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | |||
| Temp. °C | 5 | 7 | 10 | 13 | 12 | 8 | 5 | 4 |
| Precip. % | 40 | 40 | 40 | 20 | 20 | 0 | 0 | 0 |
Today: A mix of sun and cloud with 40 percent chance of showers this morning and early this afternoon. Clearing this afternoon. Wind becoming northwest 30 km/h gusting to 50 near noon. High 14. UV index 4 or moderate.
Weather: Port Carling (local forecast), as of 5:01 a.m. EDT
Sun and moon
- Civil dawn
- 6:57 a.m.
- Sunrise
- 7:26 a.m.
- Sunset
- 6:43 p.m.
- Civil dusk
- 7:13 p.m.
- Moonrise
- 6:19 a.m.
- Moonset
- 6:02 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Parry Sound, as of 4:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
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 1974 records a maximum depth of 15.2 m, drawn from 10 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.
Water
Clarity was measured with a Secchi disk in 3 years between 2004 and 2019; the latest annual mean is 4.8 m.
Getting on the water
1 listed boat launch. marks launches on the map.
- Boat launch
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.