Manitouwaba Lake
45.4053° N, 79.7° W
Depth contours from the 1975 government survey. Not for navigation.
Download the depth map (SVG)Manitouwaba Lake, Ontario. 45.4053° N, 79.7° W
Maximum depth 18.3 m (1975 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/manitouwaba-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.
Manitouwaba Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 1.52 km² and lies 1.6 km southwest of Seguin Falls.
- Maximum depth
- 18.3 msurveyed 1975
- deeper than 54% of the 2,688 surveyed lakes in Ontario
- Area
- 1.52 km²
- larger than 76% of the 18,731 lakes in Ontario
- Shoreline
- 11.6 km
- longer than 77% 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
- 288 m
Today on the water
10.8 °C
Observed at Parry Sound, as of 9:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.
| Time | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. | 7 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | |||
| Temp. °C | 9 | 12 | 14 | 11 | 6 | 4 | 2 | 3 |
| Precip. % | 30 | 20 | 20 | 20 | 0 | 0 | 0 | 0 |
Today: A mix of sun and cloud with 60 percent chance of showers this morning. Clearing this afternoon. Risk of a thunderstorm early this morning. Wind becoming northwest 30 km/h gusting to 50 near noon. High 14. UV index 4 or moderate.
Weather: Parry Sound (local forecast), as of 9:00 a.m. EDT
Sun and moon
- Civil dawn
- 6:57 a.m.
- Sunrise
- 7:27 a.m.
- Sunset
- 6:44 p.m.
- Civil dusk
- 7:13 p.m.
- Moonrise
- 6:19 a.m.
- Moonset
- 6:02 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Parry Sound, as of 9:00 a.m. EDT
Depth
39% of Manitouwaba Lake is shallower than 3 m, and 10% 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 1975 records a maximum depth of 18.3 m, drawn from 16 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 31 years between 1991 and 2025; the latest annual mean is 2.7 m.