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Map of Randolph Lake

Randolph Lake

50.2774° N, 88.9609° W

Shoreline and neighbouring water from open government data.

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Randolph Lake, Ontario. 50.2774° N, 88.9609° W

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/randolph-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.
  • Fishing access 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.
  • 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.

Randolph Lake covers 1.25 km², making it larger than 72% of the 18,731 lakes in Ontario. It lies 5 km east of Armstrong.

Government surveys have recorded 10 fish species here, including cisco, northern pike and yellow perch.

Area
1.25 km²
larger than 72% of the 18,731 lakes in Ontario
Shoreline
9.6 km
longer than 73% of the 18,731 lakes in Ontario
Fish species
10
more than 73% of the 2,454 surveyed lakes in Ontario
Elevation
320 m

Today on the water

-2.3 °C

ClearWind calmfeels like -4 °C

Observed at Gull Bay, as of 5:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 m. Around 6 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

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 10SW 10SE 10SE 15S 15S 20SE 30SE 20
Gusts km/h405040
Waves (est.) m0.10.10.10.10.1
Temp. °C33811121088
Precip. %2020202040404010

Tonight: Mainly cloudy. 30 percent chance of showers early this evening. Clearing near midnight. Wind north 20 km/h gusting to 40 becoming light this evening. Low plus 2.

Weather: Gull Bay (local forecast), as of 5:02 a.m. EDT

Sun and moon

Civil dawn
7:36 a.m.
Sunrise
8:08 a.m.
Sunset
7:16 p.m.
Civil dusk
7:48 p.m.
Moonrise
7:00 a.m.
Moonset
6:35 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.

Fish

Sport fish by the share of the 34 government surveys (2008–2013) that recorded them.

  • Cisco19 of 34
  • Northern Pike19 of 34
  • Yellow Perch18 of 34
  • Brook Trout11 of 34
Forage fish and other species (6)

Forage fish

  • Lake Chub 13
  • Trout-Perch 10
  • Mottled Sculpin 3
  • Ninespine Stickleback 3
  • Spoonhead Sculpin 3

Other

  • White Sucker 27

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 3 species from Randolph Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Brook Trout30-35 cm84Mercury
Northern Pike55-60 cm4Do not eatMercury
White Sucker40-45 cm1616Selenium

* 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 6. Check seasons and limits before you fish.

Getting on the water

1 listed boat launch. marks launches on the map.