Hannah Lake
46.1859° N, 81.5686° W
Depth contours from the 1976 government survey. Not for navigation.
Download the depth map (SVG)Hannah Lake, Ontario. 46.1859° N, 81.5686° W
Maximum depth 21.3 m (1976 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/hannah-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.
- Fishing access points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
- 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).
Hannah Lake is 21.3 m deep at its deepest point, deeper than 62% of the 2,688 surveyed lakes in Ontario. It covers 4.8 km² and lies 11 km north of McGregor Bay.
- Maximum depth
- 21.3 msurveyed 1976
- deeper than 62% of the 2,688 surveyed lakes in Ontario
- Area
- 4.8 km²
- larger than 91% of the 18,731 lakes in Ontario
- Shoreline
- 31.6 km
- longer than 93% of the 18,731 lakes in Ontario
- Water clarity
- 4.6 mSecchi depth, 1997
- clearer than 73% of the 1,251 monitored lakes in Ontario
- Elevation
- 217 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 | 0.2 | 0.2 | 0.3 | 0.2 | |||
| 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
- 7:05 a.m.
- Sunrise
- 7:35 a.m.
- Sunset
- 6:50 p.m.
- Civil dusk
- 7:20 p.m.
- Moonrise
- 6:27 a.m.
- Moonset
- 6:09 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Sudbury, as of 3:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
37% of Hannah Lake is deeper than 10 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 1976 records a maximum depth of 21.3 m, drawn from 37 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.
Getting on the water
2 listed boat launches; 2 with parking listed. marks launches on the map.
North shore
- Boat launch
West shore
- Boat launch
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.