Lower Hay Lake
45.4071° N, 78.2054° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Lower Hay Lake, Ontario. 45.4071° N, 78.2054° W
Maximum depth 20 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/lower-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.
- 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.
Lower Hay Lake is 20 m deep at its deepest point, deeper than 60% of the 2,688 surveyed lakes in Ontario. It covers 2.71 km² and lies 8.5 km southeast of Whitney.
- Maximum depth
- 20 m
- deeper than 60% of the 2,688 surveyed lakes in Ontario
- Area
- 2.71 km²
- larger than 85% of the 18,731 lakes in Ontario
- Shoreline
- 10.8 km
- longer than 76% of the 18,731 lakes in Ontario
- Water clarity
- 1.8 mSecchi depth, 2023
- less clear than 90% of the 1,251 monitored lakes in Ontario
- Elevation
- 405 m
Today on the water
4 °C
Observed at Algonquin Park (Brent), as of 5:00 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 | 6 a.m. | 9 a.m. | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. | 3 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.3 | 0.3 | 0.1 | |||
| Temp. °C | 2 | 4 | 8 | 11 | 10 | 6 | 1 | -2 |
| Precip. % | 40 | 40 | 40 | 20 | 20 | 0 | 0 | 0 |
Today: A mix of sun and cloud. 40 percent chance of showers this morning and early this afternoon. Wind becoming northwest 30 km/h gusting to 50 near noon. High 12. UV index 3 or moderate.
Weather: Algonquin Park (Brent) (local forecast), as of 5:03 a.m. EDT
Sun and moon
- Civil dawn
- 6:51 a.m.
- Sunrise
- 7:21 a.m.
- Sunset
- 6:38 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 4:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
The government depth survey records a maximum depth of 20 m, drawn from 3 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 17 years between 1998 and 2023; the latest annual mean is 1.8 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.