Bob Lake
44.9154° N, 78.7885° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Bob Lake, Ontario. 44.9154° N, 78.7885° W
Maximum depth 60 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/bob-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).
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
Bob Lake is 60 m deep at its deepest point, deeper than 96% of the 2,688 surveyed lakes in Ontario. It covers 2.35 km² and lies 4.3 km southwest of Minden.
- Maximum depth
- 60 m
- deeper than 96% of the 2,688 surveyed lakes in Ontario
- Area
- 2.35 km²
- larger than 83% of the 18,731 lakes in Ontario
- Shoreline
- 16 km
- longer than 84% of the 18,731 lakes in Ontario
- Water clarity
- 4.1 mSecchi depth, 2025
- clearer than 63% of the 1,251 monitored lakes in Ontario
- Elevation
- 299 m
Today on the water
6.8 °C
Observed at Kawartha Lakes (Fenelon Falls), as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.3 m. Around 12 p.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 | W 15 | W 15 | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.2 | 0.2 | 0.2 | 0.3 | ||||
| Temp. °C | 4 | 5 | 9 | 12 | 14 | 10 | 5 | 3 |
| Precip. % | 20 | 40 | 40 | 40 | 20 | 20 | 0 | 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: Kawartha Lakes (Fenelon Falls) (local forecast), as of 3:02 a.m. EDT
Sun and moon
- Civil dawn
- 6:53 a.m.
- Sunrise
- 7:23 a.m.
- Sunset
- 6:40 p.m.
- Civil dusk
- 7:10 p.m.
- Moonrise
- 6:15 a.m.
- Moonset
- 5:59 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
2 low risk
Dorset, as of 2:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
21% of Bob Lake is deeper than 30 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 60 m, drawn from 100 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 17 years between 1997 and 2025; the latest annual mean is 4.1 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.