Map of Blackcat Lake with depth contours

Blackcat Lake

45.1836° N, 78.6978° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Blackcat Lake is 42.7 m deep at its deepest point, deeper than 90% of the 2,688 surveyed lakes in Ontario. It covers 0.19 km² and lies 8.1 km north of Halls Lake.

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

Maximum depth
42.7 m
deeper than 90% of the 2,688 surveyed lakes in Ontario
Area
0.19 km²
smaller than 81% of the 18,731 lakes in Ontario
Shoreline
2.6 km
shorter than 82% of the 18,731 lakes in Ontario
Fish species
1
fewer than 100% of the 2,454 surveyed lakes in Ontario
Elevation
391 m

Today on the water

4.8 °C

Wind W 4 km/h

Observed at Oxtongue Lake, as of 3:00 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
Time4 a.m.7 a.m.10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.
Wind km/hW 15W 15W 15NW 30NW 30NW 15var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.10.2
Temp. °C2371113104-1
Precip. %20404040202000

Tonight: Partly cloudy. 60 percent chance of showers this evening. Risk of a thunderstorm early this evening. Wind west 30 km/h gusting to 50 becoming light this evening. Low plus 2.

Weather: Oxtongue Lake (local forecast), as of 3:03 a.m. EDT

Sun and moon

Civil dawn
6:53 a.m.
Sunrise
7:23 a.m.
Sunset
6:40 p.m.
Civil dusk
7:09 p.m.
Moonrise
6:15 a.m.
Moonset
5:58 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

2 low risk

Dorset, as of 2:00 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

42% of Blackcat 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 42.7 m, drawn from 10 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

  • Brook TroutStocked

Stocking

Brook Trout2,900 fish in 5 years, most recently 2025

All stocking records (5)
YearSpeciesFishStage
2025Brook Trout600Yearlings
2023Brook Trout600Yearlings
2021Brook Trout600Yearlings
2019Brook Trout600Yearlings
2017Brook Trout500Yearlings

Fishing regulations: Fisheries Management Zone 15. Check seasons and limits before you fish.