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Map of Joyce Lake with depth contours

Joyce Lake

51.1321° N, 93.0142° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Joyce Lake, Ontario. 51.1321° N, 93.0142° W

Maximum depth 6 m. Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/joyce-lake/, compiled October 9, 2026

  • Canadian Geographical Names Database, Natural Resources Canada. Contains information licensed under the Open Government Licence – Canada.
  • HydroLAKES v1.0, Messager et al. 2016 / WWF HydroSHEDS. Licensed under CC BY 4.0.
  • Census boundaries and population, 2021, Statistics Canada. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada.
  • Aquatic Resource Area survey points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fisheries Management Zones, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Bathymetry lines and survey index, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • City page weather forecasts and alerts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
  • Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.

Joyce Lake is 6 m deep at its deepest point, shallower than 88% of the 2,688 surveyed lakes in Ontario. It covers 14.7 km² and lies 21 km west of South Bay.

Government surveys have recorded 8 fish species here, including walleye, cisco and yellow perch.

Maximum depth
6 m
shallower than 88% of the 2,688 surveyed lakes in Ontario
Area
14.7 km²
larger than 97% of the 18,731 lakes in Ontario
Shoreline
46.5 km
longer than 95% of the 18,731 lakes in Ontario
Fish species
8
more than 65% of the 2,454 surveyed lakes in Ontario
Elevation
389 m

Today on the water

0.1 °C

Wind calm

Observed at Ear Falls, as of 2:00 a.m. CDT

choppy Estimated waves, next 12 hours: up to 0.3 m. Around 10 a.m., wind from the south: the south shore is sheltered, waves build toward the north shore.

Time3 a.m.6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.
Wind km/hS 10S 10S 10S 20E 10SE 30SE 30SE 30
Gusts km/h505050
Waves (est.) m0.10.10.10.3
Temp. °C2159111098
Precip. %2020202060606010

Tonight: A few clouds. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low plus 1.

Weather: Ear Falls (local forecast), as of 2:02 a.m. CDT

Sun and moon

Civil dawn
6:52 a.m.
Sunrise
7:25 a.m.
Sunset
6:31 p.m.
Civil dusk
7:04 p.m.
Moonrise
6:18 a.m.
Moonset
5:50 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

43% of Joyce Lake is shallower than 3 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 6 m, drawn from 42 depth contours.

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

Fish

Sport fish by the share of the 20 government surveys (2013–2013) that recorded them.

  • Walleye20 of 20
  • Cisco15 of 20
  • Yellow Perch15 of 20
  • Northern Pike14 of 20
  • Lake Whitefish5 of 20
Forage fish and other species (3)

Forage fish

  • Spottail Shiner 7
  • Trout-Perch 4

Other

  • White Sucker 11

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 2 species from Joyce Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Northern Pike55-60 cm164Mercury
Walleye40-45 cm8Do not eatMercury

* 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 4. Check seasons and limits before you fish.