Rock Lake

45.6796° N, 82.1223° W

Rock Lake, Ontario. 45.6796° N, 82.1223° W

Not for navigation. Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/rock-lake-near-northeastern-manitoulin-and-the-islands/, 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).

Rock Lake covers 1.38 km², Ontario. It lies 22 km south of Northeastern Manitoulin and the Islands.

Area: 1.38 km²
Shoreline: 6.7 km
Elevation: 218 m

Today on the water

11.3 °C

Mostly CloudyWind SSW 22 km/h

Observed at Gore Bay, as of 7:00 a.m. EDT

Wind from the south: the south shore is the sheltered side.

Hourly forecast, next 24 hours
Time	8 a.m.	11 a.m.	2 p.m.	5 p.m.	8 p.m.	11 p.m.	2 a.m.	5 a.m.
Wind km/h	NW 15	NW 20	NW 20	NW 20	var. 5	SE 10	SE 10	SE 10
Gusts km/h		40	40	40
Temp. °C	9	12	14	15	12	8	7	7
Precip. %	30	30	20	20	0	0	0	0

Today: A mix of sun and cloud with 30 percent chance of showers this morning and early this afternoon. Clearing this afternoon. Risk of a thunderstorm early this morning. Wind becoming northwest 20 km/h gusting to 40 late this morning. High 15. UV index 4 or moderate.

Weather: Gore Bay (local forecast), as of 7:02 a.m. EDT

Sun and moon

Civil dawn: 7:07 a.m.
Sunrise: 7:37 a.m.
Sunset: 6:53 p.m.
Civil dusk: 7:23 p.m.
Moonrise: 6:29 a.m.
Moonset: 6:12 p.m.
Moon: Waning crescent, 1% lit