Bass Lake
44.8181° N, 76.1433° W
Shoreline and neighbouring water from open government data.
Download the map (SVG)Bass Lake, Ontario. 44.8181° N, 76.1433° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/bass-lake-near-perth/, 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).
Bass Lake covers 2.96 km², making it larger than 86% of the 18,731 lakes in Ontario. It lies 3.4 km southwest of Lombardy.
- Area
- 2.96 km²
- larger than 86% of the 18,731 lakes in Ontario
- Shoreline
- 11.4 km
- longer than 77% of the 18,731 lakes in Ontario
- Water clarity
- 6.5 mSecchi depth, 2025
- clearer than 94% of the 1,251 monitored lakes in Ontario
- Elevation
- 133 m
Today on the water
7.9 °C
Observed at Smiths Falls, as of 2:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.3 m.
| Time | 3 a.m. | 6 a.m. | 9 a.m. | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | W 15 | W 15 | NW 30 | NW 30 | NW 15 | NW 10 | NW 10 |
| Gusts | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.3 | ||||
| Temp. °C | 5 | 5 | 7 | 11 | 13 | 12 | 7 | 3 |
| Precip. % | 20 | 40 | 40 | 40 | 40 | 20 | 20 | 0 |
Tonight: Partly cloudy. 60 percent chance of showers this evening. Risk of a thunderstorm early this evening. Wind west 30 km/h gusting to 50 becoming light this evening. Low plus 4.
Weather: Smiths Falls (local forecast), as of 2:02 a.m. EDT
Sun and moon
- Civil dawn
- 6:43 a.m.
- Sunrise
- 7:12 a.m.
- Sunset
- 6:30 p.m.
- Civil dusk
- 6:59 p.m.
- Moonrise
- 6:04 a.m.
- Moonset
- 5:48 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Water
Clarity was measured with a Secchi disk in 7 years between 1998 and 2025; the latest annual mean is 6.5 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.