Map of Coli Lake with depth contours

Coli Lake

51.3153° N, 93.59° W

Depth contours from the 1971 government survey. Not for navigation.

Download the depth map (SVG)

Coli Lake is 9.1 m deep at its deepest point, shallower than 76% of the 2,688 surveyed lakes in Ontario. It covers 21.2 km² and lies 23 km northeast of Red Lake.

Government surveys have recorded 7 fish species here, including walleye, yellow perch and cisco.

Maximum depth
9.1 msurveyed 1971
shallower than 76% of the 2,688 surveyed lakes in Ontario
Area
21.2 km²
larger than 98% of the 18,731 lakes in Ontario
Shoreline
46.5 km
longer than 95% of the 18,731 lakes in Ontario
Fish species
7
more than 61% of the 2,454 surveyed lakes in Ontario
Elevation
410 m

Today on the water

4.7 °C

ClearWind SSW 12 km/h

Observed at Red Lake, as of 2:00 a.m. CDT

choppy Estimated waves, next 12 hours: up to 0.3 m. Around 10 a.m., wind from the south: the south shore is sheltered, waves build toward the north shore.

Hourly forecast, next 24 hours
Time3 a.m.6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.
Wind km/hS 10S 10S 10S 20SE 20SE 20SE 20SE 20
Gusts km/h40404040
Waves (est.) m0.10.10.10.3
Temp. °C3259101098
Precip. %2020202060606010

Tonight: Partly cloudy. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low plus 1.

Weather: Red Lake (local forecast), as of 2:01 a.m. CDT

Sun and moon

Civil dawn
6:55 a.m.
Sunrise
7:28 a.m.
Sunset
6:33 p.m.
Civil dusk
7:07 p.m.
Moonrise
6:21 a.m.
Moonset
5:52 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.

Depth

43% of Coli Lake is shallower than 3 m, and 20% is deeper than 5 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 from 1971 records a maximum depth of 9.1 m, drawn from 46 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 24 government surveys (2009–2009) that recorded them.

  • Walleye24 of 24
  • Yellow Perch23 of 24
  • Cisco19 of 24
  • Northern Pike17 of 24
Forage fish and other species (3)

Forage fish

  • Trout-Perch 7
  • Spottail Shiner 4

Other

  • White Sucker 12

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 5 species from Coli Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Northern Pike55-60 cm164Mercury
Walleye40-45 cm168Mercury
Yellow Perch20-25 cm1616Selenium
Cisco (Lake Herring)30-35 cm1616Precautionary
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 4. Check seasons and limits before you fish.

Getting on the water

1 listed boat launch. marks launches on the map.