BorealBoundFrançais
Map of Three Mile Lake with depth contours

Three Mile Lake

45.5936° N, 79.3125° W

Depth contours from the 1973 government survey. Not for navigation.

Download the depth map (SVG)

Three Mile Lake, Ontario. 45.5936° N, 79.3125° W

Maximum depth 6.1 m (1973 survey). Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/three-mile-lake-near-kearney/, 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.
  • Fish stocking for recreational purposes, 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.
  • Lake Partner Program, Ontario Ministry of the Environment, Conservation and Parks. 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).
  • Air Quality Health Index observations and forecasts, 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.

Three Mile Lake is 6.1 m deep at its deepest point, shallower than 86% of the 2,688 surveyed lakes in Ontario. It covers 3.64 km² and lies 1.7 km southeast of Chetwynd.

Government surveys have recorded 1 fish species here: walleye.

Maximum depth
6.1 msurveyed 1973
shallower than 86% of the 2,688 surveyed lakes in Ontario
Area
3.64 km²
larger than 88% of the 18,731 lakes in Ontario
Shoreline
13.5 km
longer than 81% of the 18,731 lakes in Ontario
Water clarity
3.8 mSecchi depth, 2025
clearer than 56% of the 1,251 monitored lakes in Ontario
Fish species
1
fewer than 100% of the 2,454 surveyed lakes in Ontario
Elevation
346 m

Today on the water

7 °C

Mainly ClearWind NNW 9 km/h

Observed at Burk's Falls, as of 5:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.3 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast 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 15W 15NW 30NW 30NW 15var. 5var. 5var. 5
Gusts km/h5050
Waves (est.) m0.20.20.30.30.2
Temp. °C3591211620
Precip. %4040402020000

Today: A mix of sun and cloud. 40 percent chance of showers this morning and early this afternoon. Wind becoming northwest 30 km/h gusting to 50 near noon. High 13. UV index 4 or moderate.

Weather: Burk's Falls (local forecast), as of 5:01 a.m. EDT

Sun and moon

Civil dawn
6:56 a.m.
Sunrise
7:25 a.m.
Sunset
6:42 p.m.
Civil dusk
7:11 p.m.
Moonrise
6:17 a.m.
Moonset
6:00 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

2 low risk

Dorset, as of 4:00 a.m. EDT

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

The government depth survey from 1973 records a maximum depth of 6.1 m, drawn from 24 depth contours.

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

Fish

  • WalleyeStocked

Stocking

Walleye124,606 fish in 5 years, most recently 2024

All stocking records (7)
YearSpeciesFishStage
2024Walleye20,022Fry
2024Walleye8,089Fingerlings
2022Walleye26,898Fry
2022Walleye5,051Fingerlings
2021Walleye25,506Fry
2019Walleye29,580Fry
2016Walleye9,460Fingerlings

Eating your catch

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

SpeciesLengthGeneral populationSensitive population*Contaminant
Walleye40-45 cm124Mercury

* 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 15. Check seasons and limits before you fish.

Water

Clarity was measured with a Secchi disk in 10 years between 2011 and 2025; the latest annual mean is 3.8 m.

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

Getting on the water

1 listed boat launch. marks launches on the map.