Slim Jim Lake
49.6436° N, 85.7475° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Slim Jim Lake, Ontario. 49.6436° N, 85.7475° 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 Depths are from government surveys and may be outdated.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/slim-jim-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).
Slim Jim Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 2.48 km² and lies 9.2 km north of Stevens.
- Maximum depth
- 36.6 m
- deeper than 85% of the 2,688 surveyed lakes in Ontario
- Area
- 2.48 km²
- larger than 84% of the 18,731 lakes in Ontario
- Shoreline
- 15.9 km
- longer than 84% of the 18,731 lakes in Ontario
- Elevation
- 248 m
Today on the water
1 °C
Observed at Greenstone (Geraldton), 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 | SW 10 | 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 | 3 | 8 | 10 | 7 | 3 | 3 | 5 | 7 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 30 |
Today: A mix of sun and cloud. 30 percent chance of showers early this morning. Wind becoming west 20 km/h gusting to 40 late this morning. High 10. UV index 2 or low.
Weather: Greenstone (Geraldton) (local forecast), as of 9:02 a.m. EDT
Sun and moon
- Civil dawn
- 7:23 a.m.
- Sunrise
- 7:55 a.m.
- Sunset
- 7:04 p.m.
- Civil dusk
- 7:36 p.m.
- Moonrise
- 6:46 a.m.
- Moonset
- 6:22 p.m.
- Moon
- Waning crescent, 1% lit
Depth
55% of Slim Jim Lake is shallower than 3 m, and 13% 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 23 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.