Map of Rush Lake with depth contours

Rush Lake

47.7933° N, 82.1931° W

Depth contours from the 1978 government survey. Not for navigation.

Download the depth map (SVG)

Rush Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 19.9 km² and lies 14 km north of Jerome.

Maximum depth
36.6 msurveyed 1978
deeper than 85% of the 2,688 surveyed lakes in Ontario
Area
19.9 km²
larger than 97% of the 18,731 lakes in Ontario
Shoreline
63.9 km
longer than 97% of the 18,731 lakes in Ontario
Elevation
373 m

Today on the water

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 8 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Hourly forecast, next 24 hours
Time6 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/hW 10NW 20NW 20NW 20W 10var. 5S 10var. 5
Gusts km/h4040
Waves (est.) m0.10.20.20.20.1
Temp. °C337109521
Precip. %30202000000

Tonight: Cloudy with 60 percent chance of showers. Wind northwest 30 km/h gusting to 50 becoming light late this evening. Low plus 2.

Weather: Gogama (local forecast), as of 5:05 a.m. EDT

Sun and moon

Civil dawn
7:08 a.m.
Sunrise
7:39 a.m.
Sunset
6:51 p.m.
Civil dusk
7:22 p.m.
Moonrise
6:31 a.m.
Moonset
6:10 p.m.
Moon
Waning crescent, 1% lit

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

15% of Rush Lake is deeper than 20 m.

How to read it: the lake’s area is sorted from the shore to the deepest point. Where the curve is flat, large areas share one depth (flats and weed beds); where it drops, depth changes quickly (drop-offs).

The government depth survey from 1978 records a maximum depth of 36.6 m, drawn from 27 depth contours.

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 Depths are from government surveys and may be outdated.