Map of Nalla Lake with depth contours

Nalla Lake

48.6695° N, 88.7922° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Nalla Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 0.47 km² and lies 4 km northwest of Loon.

Government surveys have recorded 8 fish species here, including brook trout and lake trout.

Maximum depth
18.3 m
deeper than 54% of the 2,688 surveyed lakes in Ontario
Area
0.47 km²
smaller than 52% of the 18,731 lakes in Ontario
Shoreline
3.9 km
shorter than 63% of the 18,731 lakes in Ontario
Fish species
8
more than 69% of the 2,454 surveyed lakes in Ontario
Elevation
402 m

Today on the water

0.6 °C

Mostly CloudyWind WSW 6 km/h

Observed at Dorion, as of 9:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 m.

Hourly forecast, next 24 hours
Time10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.4 a.m.7 a.m.
Wind km/hvar. 5var. 5SE 10SE 10SE 20SE 20SE 20SE 20
Gusts km/h40404040
Waves (est.) m0.10.10.10.10.1
Temp. °C51112109878
Precip. %00000000

Today: Clear. Becoming a mix of sun and cloud this morning. High 13. UV index 3 or moderate.

Weather: Dorion (local forecast), as of 9:02 a.m. EDT

Sun and moon

Civil dawn
7:35 a.m.
Sunrise
8:06 a.m.
Sunset
7:17 p.m.
Civil dusk
7:48 p.m.
Moonrise
6:59 a.m.
Moonset
6:36 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Thunder Bay, as of 9:00 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

40% of Nalla Lake is deeper than 10 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 18.3 m, drawn from 7 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 28 government surveys (2008–2013) that recorded them.

  • Brook Trout14 of 28
  • Lake Trout13 of 28
Forage fish and other species (6)

Forage fish

  • Fathead Minnow 10
  • Northern Pearl Dace 6
  • Brook Stickleback 5
  • Lake Chub 5
  • Trout-Perch 1

Other

  • White Sucker 20

Numbers are the surveys that recorded each species.

Eating your catch

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

SpeciesLengthGeneral populationSensitive population*Contaminant
Brook Trout30-35 cm168Mercury
Lake Trout50-55 cm4Do not eatMercury
White Sucker40-45 cm1616Precautionary

* 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.