Maria Lake
52.9862° N, 89.6134° W
Depth contours from the 1978 government survey. Not for navigation.
Download the depth map (SVG)Maria Lake, Ontario. 52.9862° N, 89.6134° W
Maximum depth 18 m (1978 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/maria-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).
Maria Lake is 18 m deep at its deepest point, deeper than 52% of the 2,688 surveyed lakes in Ontario. It covers 42.4 km² and lies 9.5 km east of Kingfisher Lake.
- Maximum depth
- 18 msurveyed 1978
- deeper than 52% of the 2,688 surveyed lakes in Ontario
- Area
- 42.4 km²
- larger than 99% of the 18,731 lakes in Ontario
- Shoreline
- 171 km
- longer than 99% of the 18,731 lakes in Ontario
- Elevation
- 248 m
Today on the water
2.8 °C
Observed at Wunnummin Lake, as of 4:00 a.m. CDT
choppy Estimated waves, next 12 hours: up to 0.4 m. Around 5 a.m., wind from the west: the west shore is sheltered, waves build toward the east 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 30 | NW 15 | var. 5 | var. 5 | S 20 | SE 20 | S 20 | SE 30 |
| Waves (est.) m | 0.4 | 0.2 | 0.1 | 0.1 | 0.3 | |||
| Temp. °C | 1 | 5 | 7 | 8 | 8 | 7 | 6 | 5 |
| Precip. % | 30 | 20 | 20 | 30 | 30 | 30 | 80 | 80 |
Tonight: Cloudy. 70 percent chance of rain showers changing to 30 percent chance of rain showers this evening and then to 30 percent chance of flurries or rain showers overnight. Fog patches developing overnight. Wind northwest 20 km/h becoming light late this evening. Wind becoming west 30 after midnight. Low zero.
Weather: Wunnummin Lake (local forecast), as of 4:02 a.m. CDT
Sun and moon
- Civil dawn
- 6:39 a.m.
- Sunrise
- 7:14 a.m.
- Sunset
- 6:16 p.m.
- Civil dusk
- 6:50 p.m.
- Moonrise
- 6:05 a.m.
- Moonset
- 5:34 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
The government depth survey from 1978 records a maximum depth of 18 m, drawn from 135 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.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.