Irwin Lake
51.5749° N, 95.0514° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Irwin Lake, Ontario. 51.5749° N, 95.0514° W
Maximum depth 12 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/irwin-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).
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
Irwin Lake is 12 m deep at its deepest point, shallower than 68% of the 2,688 surveyed lakes in Ontario. It covers 2.99 km² and lies 66 km south of Pauingassi.
- Maximum depth
- 12 m
- shallower than 68% of the 2,688 surveyed lakes in Ontario
- Area
- 2.99 km²
- larger than 86% of the 18,731 lakes in Ontario
- Shoreline
- 28.1 km
- longer than 92% of the 18,731 lakes in Ontario
- Elevation
- 340 m
Today on the water
calm Estimated waves, next 12 hours: up to 0.1 m. Around 7 a.m., wind from the south: the south shore is sheltered, waves build toward the north shore.
| Time | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | S 15 | S 15 | E 20 | E 20 | E 20 | E 20 | E 20 | E 10 |
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |||
| Temp. °C | 3 | 8 | 10 | 11 | 9 | 8 | 9 | 10 |
| Precip. % | 20 | 20 | 80 | 80 | 60 | 60 | 60 | 60 |
Today: A mix of sun and cloud. Becoming cloudy near noon then rain. Amount 5 mm. Wind becoming east 20 km/h near noon. High 11. UV index 2 or low.
Weather: Little Grand Rapids (local forecast), as of 6:05 a.m. CDT
Sun and moon
- Civil dawn
- 7:00 a.m.
- Sunrise
- 7:34 a.m.
- Sunset
- 6:39 p.m.
- Civil dusk
- 7:12 p.m.
- Moonrise
- 6:27 a.m.
- Moonset
- 5:58 p.m.
- Moon
- Waning crescent, 1% lit
Depth
48% of Irwin Lake is shallower than 3 m, and 36% 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 12 m, drawn from 33 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.