Callahan Lake
47.5233° N, 84.5197° W
Depth contours from the 1981 government survey. Not for navigation.
Download the depth map (SVG)Callahan Lake, Ontario. 47.5233° N, 84.5197° W
Maximum depth 4 m (1981 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/callahan-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.
Callahan Lake is 4 m deep at its deepest point, shallower than 92% of the 2,688 surveyed lakes in Ontario. It covers 0.59 km² and lies 16 km south of Millwood.
Government surveys have recorded 3 fish species here: brook trout, white sucker and northern redbelly dace.
- Maximum depth
- 4 msurveyed 1981
- shallower than 92% of the 2,688 surveyed lakes in Ontario
- Area
- 0.59 km²
- larger than 55% of the 18,731 lakes in Ontario
- Shoreline
- 6.2 km
- longer than 58% of the 18,731 lakes in Ontario
- Fish species
- 3
- fewer than 55% of the 2,454 surveyed lakes in Ontario
- Elevation
- 341 m
Today on the water
3 °C
Observed at Lake Superior (Provincial Park), as of 9:00 a.m. EDT
calm Estimated waves, next 12 hours: up to 0.1 m.
| Time | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. | 7 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 | 0.1 | 0.1 | 0.1 | 0.1 | |||
| Temp. °C | 6 | 9 | 11 | 8 | 5 | 3 | 5 | 7 |
| Precip. % | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Today: A mix of sun and cloud. 30 percent chance of showers early this morning. Clearing this afternoon. Wind becoming west 20 km/h gusting to 40 late this morning. High 12. UV index 3 or moderate.
Weather: Lake Superior (Provincial Park) (local forecast), as of 9:02 a.m. EDT
Sun and moon
- Civil dawn
- 7:17 a.m.
- Sunrise
- 7:48 a.m.
- Sunset
- 7:01 p.m.
- Civil dusk
- 7:32 p.m.
- Moonrise
- 6:40 a.m.
- Moonset
- 6:20 p.m.
- Moon
- Waning crescent, 1% lit
Depth
The government depth survey from 1981 records a maximum depth of 4 m, drawn from 3 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 10 government surveys (2010–2010) that recorded them.
Forage fish and other species (2)
Forage fish
- Northern Redbelly Dace 4
Other
- White Sucker 10
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 1 species from Callahan Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Brook Trout | 30-35 cm | 4 | Do not eat | 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 10. Check seasons and limits before you fish.