Cooper Lake
46.5203° N, 83.5639° W
Depth contours from the 1973 government survey. Not for navigation.
Download the depth map (SVG)Cooper Lake, Ontario. 46.5203° N, 83.5639° W
Maximum depth 21.3 m (1973 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/cooper-lake-near-thessalon/, 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).
Cooper Lake is 21.3 m deep at its deepest point, deeper than 62% of the 2,688 surveyed lakes in Ontario. It covers 0.89 km² and lies 6.9 km northeast of Dunns Valley.
- Maximum depth
- 21.3 msurveyed 1973
- deeper than 62% of the 2,688 surveyed lakes in Ontario
- Area
- 0.89 km²
- larger than 65% of the 18,731 lakes in Ontario
- Shoreline
- 7.1 km
- longer than 63% of the 18,731 lakes in Ontario
- Elevation
- 303 m
Today on the water
10.5 °C
Observed at Sault Ste. Marie, as of 7:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 11 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.
| Time | 8 a.m. | 11 a.m. | 2 p.m. | 5 p.m. | 8 p.m. | 11 p.m. | 2 a.m. | 5 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | var. 5 | W 20 | W 20 | var. 5 | SE 10 | SE 10 | SE 10 | SE 20 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | |||
| Temp. °C | 10 | 11 | 13 | 13 | 10 | 7 | 3 | 7 |
| Precip. % | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 |
Today: A mix of sun and cloud with 30 percent chance of showers early this morning. Becoming sunny this afternoon. Wind becoming west 20 km/h gusting to 40 late this morning. High 13. UV index 3 or moderate.
Weather: Sault Ste. Marie (local forecast), as of 7:05 a.m. EDT
Sun and moon
- Civil dawn
- 7:13 a.m.
- Sunrise
- 7:43 a.m.
- Sunset
- 6:58 p.m.
- Civil dusk
- 7:28 p.m.
- Moonrise
- 6:36 a.m.
- Moonset
- 6:17 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Sault Ste. Marie, as of 7:00 a.m. EDT
Depth
51% of Cooper Lake 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 1973 records a maximum depth of 21.3 m, drawn from 16 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.