Bolster Lake
51.5031° N, 88.7337° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Bolster Lake, Ontario. 51.5031° N, 88.7337° W
Maximum depth 10 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/bolster-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.
Bolster Lake is 10 m deep at its deepest point, shallower than 71% of the 2,688 surveyed lakes in Ontario. It covers 4.24 km² and lies 56 km west of Fort Hope.
- Maximum depth
- 10 m
- shallower than 71% of the 2,688 surveyed lakes in Ontario
- Area
- 4.24 km²
- larger than 90% of the 18,731 lakes in Ontario
- Shoreline
- 8.8 km
- longer than 70% of the 18,731 lakes in Ontario
- Elevation
- 317 m
Sun and moon today
- Civil dawn
- 7:35 a.m.
- Sunrise
- 8:09 a.m.
- Sunset
- 7:14 p.m.
- Civil dusk
- 7:47 p.m.
- Moonrise
- 7:00 a.m.
- Moonset
- 6:33 p.m.
- Moon
- Waning crescent, 1% lit
Depth
51% of Bolster Lake 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 10 m, drawn from 11 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 Depths are from government surveys and may be outdated.