Map of Walker Lake

Walker Lake

45.3809° N, 79.0877° W

Shoreline and neighbouring water from open government data.

Download the map (SVG)

Walker Lake covers 0.7 km², making it larger than 59% of the 18,731 lakes in Ontario. It lies 1.9 km northeast of Grassmere.

Government surveys have recorded 1 fish species here: rainbow trout.

Area
0.7 km²
larger than 59% of the 18,731 lakes in Ontario
Shoreline
6.6 km
longer than 60% of the 18,731 lakes in Ontario
Water clarity
4.3 mSecchi depth, 2025
clearer than 68% of the 1,251 monitored lakes in Ontario
Fish species
1
fewer than 100% of the 2,454 surveyed lakes in Ontario
Elevation
362 m

Today on the water

4.3 °C

ClearWind calm

Observed at Huntsville, 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.) m0.10.10.20.2
Temp. °C37111310620
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: Huntsville (local forecast), as of 6:01 a.m. EDT

Sun and moon

Civil dawn
6:55 a.m.
Sunrise
7:24 a.m.
Sunset
6:41 p.m.
Civil dusk
7:11 p.m.
Moonrise
6:16 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.

Fish

  • Rainbow TroutStocked

Stocking

Rainbow Trout4,500 fish in 5 years, most recently 2024

All stocking records (5)
YearSpeciesFishStage
2024Rainbow Trout1,000Yearlings
2022Rainbow Trout500Yearlings
2020Rainbow Trout1,000Yearlings
2018Rainbow Trout1,000Yearlings
2016Rainbow Trout1,000Yearlings

Eating your catch

The provincial guide to eating fish (2026) sets limits for 9 species from Walker Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Lake Trout50-55 cm128PCB
Lake Whitefish45-50 cm88Arsenic
Largemouth Bass30-35 cm124Mercury
Northern Pike60-65 cm124Mercury
Rainbow Trout45-50 cm1612Precautionary
Smallmouth Bass35-40 cm164Mercury
Walleye40-45 cm168Mercury, Selenium
Cisco (Lake Herring)30-35 cm1612Selenium, Arsenic
White Sucker45-50 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 15. Check seasons and limits before you fish.

Water

Clarity was measured with a Secchi disk in 27 years between 1996 and 2025; the latest annual mean is 4.3 m.

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

Getting on the water

1 listed boat launch; 1 with parking listed. marks launches on the map.