Upper Twin Lake
50.1253° N, 86.6162° W
Depth contours from the 1973 government survey. Not for navigation.
Download the depth map (SVG)Upper Twin Lake, Ontario. 50.1253° N, 86.6162° W
Maximum depth 30.5 m (1973 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/upper-twin-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.
- 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).
Upper Twin Lake is 30.5 m deep at its deepest point, deeper than 79% of the 2,688 surveyed lakes in Ontario. It covers 16.9 km² and lies 6.8 km southeast of Nakina.
- Maximum depth
- 30.5 msurveyed 1973
- deeper than 79% of the 2,688 surveyed lakes in Ontario
- Area
- 16.9 km²
- larger than 97% of the 18,731 lakes in Ontario
- Shoreline
- 41.8 km
- longer than 95% of the 18,731 lakes in Ontario
- Elevation
- 297 m
Today on the water
-0.8 °C
Observed at Greenstone (Nakina), as of 8:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.3 m. Around 11 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.
| Time | 9 a.m. | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. | 3 a.m. | 6 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | var. 5 | W 20 | W 20 | var. 5 | SE 10 | S 10 | SE 10 | SE 20 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.3 | 0.3 | 0.1 | 0.1 | |||
| Temp. °C | 2 | 6 | 9 | 9 | 7 | 5 | 4 | 3 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 0 | 40 | 40 |
Today: A mix of sun and cloud. Wind becoming west 20 km/h gusting to 40 late this morning. High 10. UV index 2 or low.
Weather: Greenstone (Nakina) (local forecast), as of 8:02 a.m. EDT
Sun and moon
- Civil dawn
- 7:26 a.m.
- Sunrise
- 7:59 a.m.
- Sunset
- 7:07 p.m.
- Civil dusk
- 7:39 p.m.
- Moonrise
- 6:50 a.m.
- Moonset
- 6:25 p.m.
- Moon
- Waning crescent, 1% lit
Depth
The government depth survey from 1973 records a maximum depth of 30.5 m, drawn from 54 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.