Cotton Lake
48.3514° N, 85.0531° W
Depth contours from the 1971 government survey. Not for navigation.
Download the depth map (SVG)Cotton Lake, Ontario. 48.3514° N, 85.0531° W
Maximum depth 12.2 m (1971 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/cotton-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.
- 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).
Cotton Lake is 12.2 m deep at its deepest point, shallower than 65% of the 2,688 surveyed lakes in Ontario. It covers 0.36 km² and lies 16 km south of Amyot.
- Maximum depth
- 12.2 msurveyed 1971
- shallower than 65% of the 2,688 surveyed lakes in Ontario
- Area
- 0.36 km²
- smaller than 60% of the 18,731 lakes in Ontario
- Shoreline
- 4.3 km
- shorter than 58% of the 18,731 lakes in Ontario
- Elevation
- 419 m
Today on the water
3.7 °C
Observed at White River, as of 3:00 a.m. EDT
calm Estimated waves, next 12 hours: up to 0.1 m. Around 4 a.m., wind from the west: the west shore is sheltered, waves build toward the east 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 10 | NW 10 | var. 5 | W 20 | W 20 | SW 10 | SE 10 | SE 10 |
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | ||||
| Temp. °C | 4 | 3 | 5 | 9 | 11 | 8 | 6 | 6 |
| Precip. % | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 20 |
Tonight: Mainly cloudy with 60 percent chance of showers. Wind west 20 km/h gusting to 40 becoming light this evening. Low plus 3.
Weather: White River (local forecast), as of 3:01 a.m. EDT
Sun and moon
- Civil dawn
- 7:19 a.m.
- Sunrise
- 7:51 a.m.
- Sunset
- 7:02 p.m.
- Civil dusk
- 7:34 p.m.
- Moonrise
- 6:43 a.m.
- Moonset
- 6:21 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
42% of Cotton Lake is shallower than 3 m, and 43% is deeper than 5 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 1971 records a maximum depth of 12.2 m, drawn from 13 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.