McNamara Lake
49.336° N, 91.6884° W
Shoreline and neighbouring water from open government data.
Download the map (SVG)McNamara Lake, Ontario. 49.336° N, 91.6884° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/mcnamara-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.
- 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).
McNamara Lake covers 5.65 km², making it larger than 92% of the 18,731 lakes in Ontario. It lies 6.8 km south of Ignace.
- Area
- 5.65 km²
- larger than 92% of the 18,731 lakes in Ontario
- Shoreline
- 32.2 km
- longer than 93% of the 18,731 lakes in Ontario
- Water clarity
- 3.1 mSecchi depth, 2024
- less clear than 60% of the 1,251 monitored lakes in Ontario
- Elevation
- 453 m
Today on the water
2.3 °C
Observed at Ignace, as of 3:00 a.m. CDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 10 a.m., wind from the south: the south shore is sheltered, waves build toward the north 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 | S 10 | S 10 | S 20 | SE 20 | SE 20 | SE 30 | SE 30 | SE 20 |
| Gusts km/h | 40 | 50 | 50 | 40 | ||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | |||
| Temp. °C | 2 | 1 | 7 | 11 | 11 | 11 | 11 | 11 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Tonight: Partly cloudy. 30 percent chance of showers early this evening. Clearing this evening. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low plus 1.
Weather: Ignace (local forecast), as of 3:00 a.m. CDT
Sun and moon
- Civil dawn
- 6:46 a.m.
- Sunrise
- 7:18 a.m.
- Sunset
- 6:28 p.m.
- Civil dusk
- 7:00 p.m.
- Moonrise
- 6:11 a.m.
- Moonset
- 5:47 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 3 years between 2018 and 2024; the latest annual mean is 3.1 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.