North Sylvia Lake
46.0039° N, 78.8919° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)North Sylvia Lake, Ontario. 46.0039° N, 78.8919° W
Maximum depth 9.1 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/north-sylvia-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).
- 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).
North Sylvia Lake is 9.1 m deep at its deepest point, shallower than 76% of the 2,688 surveyed lakes in Ontario. It covers 0.72 km² and lies 9.4 km south of Kiosk.
- Maximum depth
- 9.1 m
- shallower than 76% of the 2,688 surveyed lakes in Ontario
- Area
- 0.72 km²
- larger than 59% of the 18,731 lakes in Ontario
- Shoreline
- 4.9 km
- shorter than 52% of the 18,731 lakes in Ontario
- Elevation
- 378 m
Today on the water
4.7 °C
Observed at North Bay, as of 6:08 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 11 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast 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 | var. 5 | NW 15 | NW 20 | NW 20 | NW 20 | var. 5 | SE 10 | SE 10 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | |||
| Temp. °C | 4 | 6 | 10 | 11 | 9 | 7 | 3 | 0 |
| Precip. % | 40 | 30 | 30 | 20 | 0 | 0 | 0 | 0 |
Today: Cloudy with 40 percent chance of showers this morning and early this afternoon then a mix of sun and cloud. Wind becoming northwest 20 km/h gusting to 40 late this morning. High 11. UV index 2 or low.
Weather: North Bay (local forecast), as of 6:09 a.m. EDT
Sun and moon
- Civil dawn
- 6:54 a.m.
- Sunrise
- 7:24 a.m.
- Sunset
- 6:40 p.m.
- Civil dusk
- 7:10 p.m.
- Moonrise
- 6:16 a.m.
- Moonset
- 5:58 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
North Bay, as of 5:00 a.m. EDT
Depth
29% of North Sylvia Lake is shallower than 3 m, and 46% 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 9.1 m, drawn from 7 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.