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Map of Porcus Lake with depth contours

Porcus Lake

49.7246° N, 93.8439° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Porcus Lake, Ontario. 49.7246° N, 93.8439° W

Maximum depth 48.8 m. Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/porcus-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.

Porcus Lake is 48.8 m deep at its deepest point, deeper than 93% of the 2,688 surveyed lakes in Ontario. It covers 5.26 km² and lies 12 km west of St. Pie X.

Government surveys have recorded 10 fish species here, including lake trout, lake whitefish and cisco.

Maximum depth
48.8 m
deeper than 93% of the 2,688 surveyed lakes in Ontario
Area
5.26 km²
larger than 92% of the 18,731 lakes in Ontario
Shoreline
19.5 km
longer than 87% of the 18,731 lakes in Ontario
Fish species
10
more than 73% of the 2,454 surveyed lakes in Ontario
Elevation
392 m

Today on the water

6.3 °C

Partly CloudyWind S 9 km/h

Observed at Kenora, as of 4:00 a.m. CDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 7 a.m., wind from the southeast: the southeast shore is sheltered, waves build toward the northwest shore.

Time5 a.m.8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.
Wind km/hSE 10SE 20SE 20SE 20SE 20SE 20SE 20SE 20
Gusts km/h4040404040
Waves (est.) m0.10.20.20.20.2
Temp. °C46101315141413
Precip. %2020203030101010

Tonight: Clear. Wind northwest 20 km/h becoming light this evening. Low plus 4.

Weather: Kenora (local forecast), as of 4:01 a.m. CDT

Sun and moon

Civil dawn
6:55 a.m.
Sunrise
7:27 a.m.
Sunset
6:36 p.m.
Civil dusk
7:08 p.m.
Moonrise
6:21 a.m.
Moonset
5:55 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

49% of Porcus 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 records a maximum depth of 48.8 m, drawn from 18 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 30 government surveys (2010–2010) that recorded them.

  • Lake Trout25 of 30
  • Lake Whitefish12 of 30
  • Cisco10 of 30
  • Yellow Perch10 of 30
  • Burbot3 of 30
Forage fish and other species (5)

Forage fish

  • Longnose Dace 5
  • Northern Pearl Dace 5
  • Logperch 2
  • Slimy Sculpin 1

Other

  • White Sucker 19

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 1 species from Porcus Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Lake Trout50-55 cm4Do 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 5. Check seasons and limits before you fish.