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Tretheway Lake

49.6281° N, 122.2778° W

Tretheway Lake, British Columbia. 49.6281° N, 122.2778° W

Not for navigation. Depths are from government surveys and may be outdated.

borealbound.ca/lakes/bc/tretheway-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.
  • Wildlife Management Units, Government of British Columbia. Contains information licensed under the Open Government Licence – British Columbia.
  • 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).

Tretheway Lake covers 0.31 km², British Columbia. It lies 53 km east of Coquitlam.

Area
0.31 km²
Shoreline
2.6 km
Elevation
1,325 m

Today on the water

13.8 °C

Wind E 7 km/h

Observed at Pitt Meadows, as of 2:00 a.m. PDT

Time3 a.m.6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.
Wind km/hS 30S 30W 15W 30W 30W 20W 20W 10
Gusts km/h50505050
Temp. °C1312131415141210
Precip. %8080803030303020

Tonight: A few clouds. Increasing cloudiness late this evening then rain beginning after midnight. Wind becoming south 30 km/h gusting to 50 near midnight. Low 12.

Weather: Pitt Meadows (local forecast), as of 2:02 a.m. PDT

Sun and moon

Civil dawn
6:49 a.m.
Sunrise
7:21 a.m.
Sunset
6:30 p.m.
Civil dusk
7:02 p.m.
Moonrise
6:20 a.m.
Moonset
5:50 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Metro Vancouver - NE, as of 2:00 a.m. PDT