Map of Duck Lake with depth contours

Duck Lake

45.3809° N, 79.8011° W

Depth contours from the 1969 government survey. Not for navigation.

Download the depth map (SVG)

Duck Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 0.86 km² and lies beside Orrville.

Maximum depth
18.3 msurveyed 1969
deeper than 54% of the 2,688 surveyed lakes in Ontario
Area
0.86 km²
larger than 64% of the 18,731 lakes in Ontario
Shoreline
6.7 km
longer than 61% of the 18,731 lakes in Ontario
Water clarity
2.7 mSecchi depth, 2025
less clear than 69% of the 1,251 monitored lakes in Ontario
Elevation
226 m

Today on the water

7.3 °C

Observed at Parry Sound, as of 6:00 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
Time7 a.m.10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.4 a.m.
Wind km/hW 15W 15NW 30NW 30NW 15var. 5var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.20.20.1
Temp. °C69121411642
Precip. %6030202020000

Today: A mix of sun and cloud with 60 percent chance of showers this morning. Clearing this afternoon. 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: Parry Sound (local forecast), as of 6:01 a.m. EDT

Sun and moon

Civil dawn
6:58 a.m.
Sunrise
7:27 a.m.
Sunset
6:44 p.m.
Civil dusk
7:14 p.m.
Moonrise
6:19 a.m.
Moonset
6:03 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Parry Sound, as of 5:00 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.

Depth

The government depth survey from 1969 records a maximum depth of 18.3 m, drawn from 5 depth contours.

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 Depths are from government surveys and may be outdated.

Water

Clarity was measured with a Secchi disk in 15 years between 1998 and 2025; the latest annual mean is 2.7 m.

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