Map of Ardoch Lake with depth contours

Ardoch Lake

44.9317° N, 76.8622° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Ardoch Lake is 16.8 m deep at its deepest point, deeper than 52% of the 2,688 surveyed lakes in Ontario. It covers 0.9 km² and lies 2.8 km east of Ardoch.

Government surveys have recorded 1 fish species here: smallmouth bass.

Maximum depth
16.8 m
deeper than 52% of the 2,688 surveyed lakes in Ontario
Area
0.9 km²
larger than 65% of the 18,731 lakes in Ontario
Shoreline
5.6 km
longer than 54% of the 18,731 lakes in Ontario
Water clarity
6.7 mSecchi depth, 2025
clearer than 95% of the 1,251 monitored lakes in Ontario
Fish species
1
fewer than 100% of the 2,454 surveyed lakes in Ontario
Elevation
252 m

Today on the water

6.9 °C

Wind WSW 8 km/h

Observed at Sharbot Lake, 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. °C59121410520
Precip. %40404040202000

Today: Mainly cloudy with 40 percent chance of showers. Wind becoming northwest 30 km/h gusting to 50 near noon. High 14. UV index 3 or moderate.

Weather: Sharbot Lake (local forecast), as of 6:00 a.m. EDT

Sun and moon

Civil dawn
6:46 a.m.
Sunrise
7:15 a.m.
Sunset
6:33 p.m.
Civil dusk
7:02 p.m.
Moonrise
6:07 a.m.
Moonset
5:51 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

37% of Ardoch Lake is deeper than 10 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 records a maximum depth of 16.8 m, drawn from 7 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 1 government surveys (2012–2012) that recorded them.

  • Smallmouth Bass1 of 1

Eating your catch

The provincial guide to eating fish (2026) sets limits for 4 species from Ardoch Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Northern Pike55-60 cm84Mercury
Walleye40-45 cm124Mercury
Yellow Perch15-20 cm168Mercury
White Sucker35-40 cm1616Precautionary

* As defined in the guide, including children and people who are or may become pregnant. Limits are for the length the guide lists most often; they change with the size of the fish. Read the official guide

Fishing regulations: Fisheries Management Zone 18. Check seasons and limits before you fish.

Water

Clarity was measured with a Secchi disk in 14 years between 2004 and 2025; the latest annual mean is 6.7 m.

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