Ruth Lake
46.0102° N, 79.517° W
Shoreline and neighbouring water from open government data.
Download the map (SVG)Ruth Lake, Ontario. 46.0102° N, 79.517° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/ruth-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.
- Lake Partner Program, Ontario Ministry of the Environment, Conservation and Parks. 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).
- Air Quality Health Index observations and forecasts, 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.
Ruth Lake covers 2.04 km², making it larger than 81% of the 18,731 lakes in Ontario. It lies 2.4 km southeast of Alsace.
- Area
- 2.04 km²
- larger than 81% of the 18,731 lakes in Ontario
- Shoreline
- 14.2 km
- longer than 82% of the 18,731 lakes in Ontario
- Water clarity
- 4.8 mSecchi depth, 2025
- clearer than 76% of the 1,251 monitored lakes in Ontario
- Elevation
- 304 m
Today on the water
4 °C
Observed at North Bay, as of 4:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 8 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast 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 | W 10 | NW 20 | W 20 | NW 20 | N 10 | NE 10 | E 10 | E 10 |
| Gusts km/h | 40 | |||||||
| Waves (est.) m | 0.1 | 0.2 | 0.2 | 0.2 | ||||
| Temp. °C | 4 | 4 | 8 | 13 | 14 | 9 | 5 | 3 |
| Precip. % | 30 | 30 | 20 | 20 | 20 | 0 | 0 | 0 |
Tonight: Mainly cloudy with 30 percent chance of showers. Wind west 20 km/h gusting to 40 becoming light early this evening. Low plus 4.
Weather: North Bay (local forecast), as of 4:00 a.m. EDT
Sun and moon
- Civil dawn
- 6:57 a.m.
- Sunrise
- 7:27 a.m.
- Sunset
- 6:42 p.m.
- Civil dusk
- 7:12 p.m.
- Moonrise
- 6:18 a.m.
- Moonset
- 6:01 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
North Bay, as of 3:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Water
Clarity was measured with a Secchi disk in 27 years between 1991 and 2025; the latest annual mean is 4.8 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.