Captain Tom Lake
48.4782° N, 92.3185° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Captain Tom Lake, Ontario. 48.4782° N, 92.3185° W
Maximum depth 18.3 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/captain-tom-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.
- Aquatic Resource Area survey 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.
- 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).
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
Captain Tom Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 1.92 km² and lies 16 km northwest of Lac la Croix.
Government surveys have recorded 10 fish species here, including walleye, yellow perch and rock bass.
- Maximum depth
- 18.3 m
- deeper than 54% of the 2,688 surveyed lakes in Ontario
- Area
- 1.92 km²
- larger than 80% of the 18,731 lakes in Ontario
- Shoreline
- 12.2 km
- longer than 78% of the 18,731 lakes in Ontario
- Fish species
- 10
- more than 73% of the 2,454 surveyed lakes in Ontario
- Elevation
- 349 m
Today on the water
0.4 °C
Observed at Mine Centre, as of 8:00 a.m. CDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 4 p.m., wind from the southeast: the southeast shore is sheltered, waves build toward the northwest shore.
| Time | 9 a.m. | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. | 3 a.m. | 6 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | var. 5 | SE 15 | E 10 | SE 20 | SE 20 | SE 20 | SE 20 | SE 20 |
| Gusts km/h | 40 | 40 | 40 | 40 | 40 | |||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | |||
| Temp. °C | 6 | 12 | 16 | 15 | 13 | 10 | 12 | 15 |
| Precip. % | 20 | 20 | 20 | 20 | 20 | 0 | 0 | 0 |
Today: A mix of sun and cloud. Wind becoming southeast 20 km/h gusting to 40 late this afternoon. High 17. UV index 3 or moderate.
Weather: Mine Centre (local forecast), as of 8:03 a.m. CDT
Sun and moon
- Civil dawn
- 6:49 a.m.
- Sunrise
- 7:20 a.m.
- Sunset
- 6:31 p.m.
- Civil dusk
- 7:02 p.m.
- Moonrise
- 6:13 a.m.
- Moonset
- 5:50 p.m.
- Moon
- Waning crescent, 1% lit
Depth
21% of Captain Tom 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 records a maximum depth of 18.3 m, drawn from 8 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.
Fish
Sport fish by the share of the 17 government surveys (2010–2010) that recorded them.
Forage fish and other species (4)
Forage fish
- Emerald Shiner 1
- Golden Shiner 1
- Trout-Perch 1
Other
- White Sucker 9
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 4 species from Captain Tom Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Northern Pike | 55-60 cm | 4 | Do not eat | Mercury |
| Smallmouth Bass | 35-40 cm | 12 | 4 | Mercury |
| Walleye | 40-45 cm | 4 | Do not eat | Mercury |
| White Sucker | 40-45 cm | 16 | 8 | Mercury |
* As defined in the guide, including children and people who are or may become pregnant. Limits are for the length the guide lists most often; they change with the size of the fish. Read the official guide
Fishing regulations: Fisheries Management Zone 5. Check seasons and limits before you fish.