Map of Whitestone Lake

Whitestone Lake

45.6475° N, 79.8697° W

Shoreline and neighbouring water from open government data.

Download the map (SVG)

Whitestone Lake covers 7.16 km², making it larger than 94% of the 18,731 lakes in Ontario. It lies beside Dunchurch.

Area
7.16 km²
larger than 94% of the 18,731 lakes in Ontario
Shoreline
71.6 km
longer than 97% of the 18,731 lakes in Ontario
Water clarity
1.8 mSecchi depth, 2025
less clear than 90% of the 1,251 monitored lakes in Ontario
Elevation
251 m

Today on the water

13.2 °C

Observed at Dunchurch, as of 10:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Hourly forecast, next 24 hours
Time11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.5 a.m.8 a.m.
Wind km/hW 15NW 30NW 30NW 15var. 5var. 5var. 5SE 15
Gusts km/h5050
Waves (est.) m0.10.20.20.1
Temp. °C9131484213
Precip. %30202000000

Today: A mix of sun and cloud. 60 percent chance of showers this morning. Risk of a thunderstorm early this morning. Wind becoming northwest 30 km/h gusting to 50 near noon. High 14. UV index 4 or moderate.

Weather: Dunchurch (local forecast), as of 10:00 a.m. EDT

Sun and moon

Civil dawn
6:58 a.m.
Sunrise
7:28 a.m.
Sunset
6:44 p.m.
Civil dusk
7:14 p.m.
Moonrise
6:20 a.m.
Moonset
6:03 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Parry Sound, as of 9:00 a.m. EDT

Data Source: Environment and Climate Change Canada. Local times.

How waves are estimated

Significant wave height from the forecast hourly wind and the open-water distance (fetch) upwind, using the SMB method (US Army Corps of Engineers Shore Protection Manual, 1984), rounded up to the next 0.1 m. It is not a measurement: gusts, leftover swell and shoals can make water rougher. Under 0.2 m: calm; 0.2–0.5 m: choppy; over 0.5 m: rough.

Water

Clarity was measured with a Secchi disk in 11 years between 1996 and 2025; the latest annual mean is 1.8 m.

Water clarity (Secchi depth, m)
Total phosphorus (µg/L)

Getting on the water

2 listed access points, one of them a boat launch; 2 with parking listed. marks launches on the map.

East shore

Northwest shore