Tomahawk Lake
49.4339° N, 87.4253° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Tomahawk Lake, Ontario. 49.4339° N, 87.4253° W
Maximum depth 15.2 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/tomahawk-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).
Tomahawk Lake is 15.2 m deep at its deepest point, shallower than 55% of the 2,688 surveyed lakes in Ontario. It covers 0.81 km² and lies 28 km south of Jellicoe.
- Maximum depth
- 15.2 m
- shallower than 55% of the 2,688 surveyed lakes in Ontario
- Area
- 0.81 km²
- larger than 62% of the 18,731 lakes in Ontario
- Shoreline
- 6.9 km
- longer than 62% of the 18,731 lakes in Ontario
- Elevation
- 398 m
Today on the water
2.4 °C
Observed at Greenstone (Beardmore), as of 7:00 a.m. EDT
calm Estimated waves, next 12 hours: up to 0.1 m. Around 8 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast 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 | NW 10 | S 15 | S 15 | S 15 | S 15 | S 15 | SE 20 | SE 20 |
| Gusts km/h | 40 | 40 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |||
| Temp. °C | 2 | 7 | 12 | 12 | 11 | 6 | 3 | 6 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 30 | 0 | 0 |
Today: A mix of sun and cloud. High 12. UV index 2 or low.
Weather: Greenstone (Beardmore) (local forecast), as of 7:03 a.m. EDT
Sun and moon
- Civil dawn
- 7:29 a.m.
- Sunrise
- 8:01 a.m.
- Sunset
- 7:11 p.m.
- Civil dusk
- 7:43 p.m.
- Moonrise
- 6:53 a.m.
- Moonset
- 6:29 p.m.
- Moon
- Waning crescent, 1% lit
Depth
47% of Tomahawk Lake is shallower than 3 m, and 44% 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 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.