O'Brien Lake
48.7564° N, 87.6481° W
O'Brien Lake, Ontario. 48.7564° N, 87.6481° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/o-brien-lake-near-pays-plat/, 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.
- 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).
O'Brien Lake covers 0.89 km², Ontario. It lies 16 km south of Pays Plat.
- Area
- 0.89 km²
- Shoreline
- 7 km
- Elevation
- 185 m
Today on the water
1.6 °C
Observed at Terrace Bay, as of 3:00 a.m. EDT
| Time | 4 a.m. | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | NW 10 | NW 10 | W 10 | SW 10 | SW 15 | var. 5 | SE 15 | SE 15 |
| Temp. °C | 2 | 0 | 4 | 10 | 11 | 10 | 9 | 7 |
| Precip. % | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 20 |
Tonight: Partly cloudy with 60 percent chance of showers. Wind north 20 km/h gusting to 40 becoming light this evening. Low minus 1.
Weather: Terrace Bay (local forecast), as of 3:03 a.m. EDT
Sun and moon
- Civil dawn
- 7:30 a.m.
- Sunrise
- 8:02 a.m.
- Sunset
- 7:12 p.m.
- Civil dusk
- 7:44 p.m.
- Moonrise
- 6:54 a.m.
- Moonset
- 6:31 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.