Bass Lake
45.9454° N, 80.8594° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Bass Lake, Ontario. 45.9454° N, 80.8594° W
Maximum depth 24 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/bass-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.
- 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).
Bass Lake is 24 m deep at its deepest point, deeper than 68% of the 2,688 surveyed lakes in Ontario. It covers 20.6 km² and lies beside Hartley Bay.
- Maximum depth
- 24 m
- deeper than 68% of the 2,688 surveyed lakes in Ontario
- Area
- 20.6 km²
- larger than 98% of the 18,731 lakes in Ontario
- Shoreline
- 175 km
- longer than 99% of the 18,731 lakes in Ontario
- Water clarity
- 2.7 mSecchi depth, 2025
- less clear than 69% of the 1,251 monitored lakes in Ontario
- Elevation
- 178 m
Today on the water
choppy Estimated waves, next 12 hours: up to 0.3 m. Around 11 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.
| Time | 4 a.m. | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | NW 20 | NW 15 | NW 20 | NW 30 | NW 20 | var. 5 | var. 5 | E 10 |
| Gusts km/h | 50 | |||||||
| Waves (est.) m | 0.2 | 0.1 | 0.2 | 0.3 | ||||
| Temp. °C | 7 | 7 | 10 | 13 | 15 | 15 | 12 | 6 |
| Precip. % | 30 | 30 | 30 | 20 | 20 | 0 | 0 | 0 |
Tonight: Partly cloudy with 30 percent chance of showers. Wind west 40 km/h gusting to 60 becoming northwest 20 gusting to 40 early this evening. Low 7.
Weather: Killarney (local forecast), as of 3:05 a.m. EDT
Sun and moon
- Civil dawn
- 7:02 a.m.
- Sunrise
- 7:32 a.m.
- Sunset
- 6:48 p.m.
- Civil dusk
- 7:18 p.m.
- Moonrise
- 6:24 a.m.
- Moonset
- 6:06 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Sudbury, as of 2:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
The government depth survey records a maximum depth of 24 m, drawn from 73 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.
Water
Clarity was measured with a Secchi disk in 18 years between 2002 and 2025; the latest annual mean is 2.7 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.