Oba Lake
48.6454° N, 84.2887° W
Depth contours from the 1971 government survey. Not for navigation.
Download the depth map (SVG)Oba Lake, Ontario. 48.6454° N, 84.2887° W
Maximum depth 12.2 m (1971 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/oba-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.
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
Oba Lake is 12.2 m deep at its deepest point, shallower than 65% of the 2,688 surveyed lakes in Ontario. It covers 25.6 km² and lies 1.1 km southwest of Mosher.
- Maximum depth
- 12.2 msurveyed 1971
- shallower than 65% of the 2,688 surveyed lakes in Ontario
- Area
- 25.6 km²
- larger than 98% of the 18,731 lakes in Ontario
- Shoreline
- 96 km
- longer than 98% of the 18,731 lakes in Ontario
- Elevation
- 341 m
Sun and moon today
- Civil dawn
- 7:17 a.m.
- Sunrise
- 7:48 a.m.
- Sunset
- 6:59 p.m.
- Civil dusk
- 7:30 p.m.
- Moonrise
- 6:40 a.m.
- Moonset
- 6:18 p.m.
- Moon
- Waning crescent, 1% lit
Depth
50% of Oba Lake is shallower than 3 m, and 35% 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 from 1971 records a maximum depth of 12.2 m, drawn from 64 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 Depths are from government surveys and may be outdated.