Map of Raven Lake with depth contours

Raven Lake

45.2157° N, 78.8565° W

Depth contours from the 1977 government survey. Not for navigation.

Download the depth map (SVG)

Raven Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 5.99 km² and lies 2.4 km south of Russell Landing.

Maximum depth
36.6 msurveyed 1977
deeper than 85% of the 2,688 surveyed lakes in Ontario
Area
5.99 km²
larger than 93% of the 18,731 lakes in Ontario
Shoreline
50.4 km
longer than 96% of the 18,731 lakes in Ontario
Water clarity
4.1 mSecchi depth, 2024
clearer than 66% of the 1,251 monitored lakes in Ontario
Elevation
349 m

Today on the water

6.2 °C

Wind S 2 km/h

Observed at Oxtongue Lake, as of 9:00 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.

Hourly forecast, next 24 hours
Time10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.4 a.m.7 a.m.
Wind km/hW 15NW 30NW 30NW 15var. 5var. 5var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.30.30.20.1
Temp. °C71113104-1-3-2
Precip. %404020200000

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 13. UV index 4 or moderate.

Weather: Oxtongue Lake (local forecast), as of 9:02 a.m. EDT

Sun and moon

Civil dawn
6:54 a.m.
Sunrise
7:23 a.m.
Sunset
6:40 p.m.
Civil dusk
7:10 p.m.
Moonrise
6:15 a.m.
Moonset
5:59 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Dorset, 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.

Depth

The government depth survey from 1977 records a maximum depth of 36.6 m, drawn from 48 depth contours.

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 Depths are from government surveys and may be outdated.

Water

Clarity was measured with a Secchi disk in 27 years between 1998 and 2024; the latest annual mean is 4.1 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.

Northeast shore

West shore