Grey Trout Lake
49.0294° N, 92.0795° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Grey Trout Lake, Ontario. 49.0294° N, 92.0795° W
Maximum depth 36.6 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/grey-trout-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.
- Fishing access 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.
Grey Trout Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 13.5 km² and lies 29 km north of Flanders.
Government surveys have recorded 7 fish species here, including lake whitefish, lake trout and walleye.
- Maximum depth
- 36.6 m
- deeper than 85% of the 2,688 surveyed lakes in Ontario
- Area
- 13.5 km²
- larger than 96% of the 18,731 lakes in Ontario
- Shoreline
- 50.7 km
- longer than 96% of the 18,731 lakes in Ontario
- Fish species
- 7
- more than 61% of the 2,454 surveyed lakes in Ontario
- Elevation
- 433 m
Today on the water
-1 °C
Observed at Atikokan, as of 4:00 a.m. EST
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 10 a.m., wind from the southeast: the southeast shore is sheltered, waves build toward the northwest shore.
| Time | 5 a.m. | 8 a.m. | 11 a.m. | 2 p.m. | 5 p.m. | 8 p.m. | 11 p.m. | 2 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | SE 10 | SE 10 | SE 20 | SE 20 | SE 20 | SE 20 | SE 20 | SE 20 |
| Gusts km/h | 40 | 40 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | |||
| Temp. °C | -1 | 1 | 9 | 14 | 13 | 11 | 10 | 9 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Tonight: Partly cloudy with 40 percent chance of showers early this evening then clear. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low minus 2.
Weather: Atikokan (local forecast), as of 4:00 a.m. EST
Sun and moon
- Civil dawn
- 6:48 a.m.
- Sunrise
- 7:20 a.m.
- Sunset
- 6:30 p.m.
- Civil dusk
- 7:01 p.m.
- Moonrise
- 6:13 a.m.
- Moonset
- 5:49 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
39% of Grey Trout Lake is deeper than 20 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 36.6 m, drawn from 36 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 27 government surveys (2010–2010) that recorded them.
Forage fish and other species (2)
Forage fish
- Emerald Shiner 1
Other
- White Sucker 16
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 5 species from Grey Trout Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Lake Trout | 50-55 cm | 12 | 4 | Mercury |
| Lake Whitefish | 45-50 cm | 16 | 8 | Mercury |
| Walleye | 40-45 cm | 16 | 4 | Mercury |
| Burbot (Ling) | 40-45 cm | 16 | 4 | Mercury |
| White Sucker | 40-45 cm | 16 | 16 | Selenium |
* 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.
Getting on the water
1 listed boat launch; 1 with parking listed. marks launches on the map.
- Grey Trout Lake Access Point
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.