Hay Lake
45.3775° N, 78.1844° W
Shoreline and neighbouring water from open government data.
Download the map (SVG)Hay Lake, Ontario. 45.3775° N, 78.1844° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/hay-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.
- 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).
- Ontario Waterbody Location Identifier, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
Hay Lake covers 5.8 km², making it larger than 92% of the 18,731 lakes in Ontario. It lies 5.8 km southwest of Wallace.
- Area
- 5.8 km²
- larger than 92% of the 18,731 lakes in Ontario
- Shoreline
- 38.5 km
- longer than 94% of the 18,731 lakes in Ontario
- Water clarity
- 1.6 mSecchi depth, 2023
- less clear than 93% of the 1,251 monitored lakes in Ontario
- Elevation
- 405 m
Today on the water
4.8 °C
Observed at Algonquin Park (Brent), as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.3 m. Around 12 p.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 | W 15 | W 15 | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | |||
| Temp. °C | 1 | 2 | 6 | 10 | 12 | 9 | 4 | 0 |
| Precip. % | 40 | 40 | 40 | 40 | 20 | 20 | 0 | 0 |
Tonight: Partly cloudy with 60 percent chance of showers. Risk of a thunderstorm early this evening. Wind west 30 km/h gusting to 50 becoming light this evening. Low plus 1.
Weather: Algonquin Park (Brent) (local forecast), as of 3:03 a.m. EDT
Sun and moon
- Civil dawn
- 6:51 a.m.
- Sunrise
- 7:21 a.m.
- Sunset
- 6:37 p.m.
- Civil dusk
- 7:07 p.m.
- Moonrise
- 6:13 a.m.
- Moonset
- 5:56 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
2 low risk
Dorset, as of 3:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Water
Clarity was measured with a Secchi disk in 18 years between 1996 and 2023; the latest annual mean is 1.6 m.
Getting on the water
2 listed boat launches. marks launches on the map.
- Boat launch
- Boat launch
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.