Map of Bright Lake with depth contours

Bright Lake

46.2689° N, 83.3047° W

Depth contours from the 1964 government survey. Not for navigation.

Download the depth map (SVG)

Bright Lake is 9.1 m deep at its deepest point, shallower than 76% of the 2,688 surveyed lakes in Ontario. It covers 12.2 km² and lies beside Day Mills.

Government surveys have recorded 21 fish species here, including yellow perch, northern pike and walleye.

Maximum depth
9.1 msurveyed 1964
shallower than 76% of the 2,688 surveyed lakes in Ontario
Area
12.2 km²
larger than 96% of the 18,731 lakes in Ontario
Shoreline
26.1 km
longer than 91% of the 18,731 lakes in Ontario
Water clarity
2.3 mSecchi depth, 2025
less clear than 80% of the 1,251 monitored lakes in Ontario
Fish species
21
more than 97% of the 2,454 surveyed lakes in Ontario
Elevation
178 m

Today on the water

9.5 °C

Partly CloudyWind SSW 11 km/h

Observed at Blind River, as of 5:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.3 m. Around 8 a.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Hourly forecast, next 24 hours
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/hNW 10NW 20NW 20NW 10var. 5var. 5SE 10E 10
Gusts km/h40
Waves (est.) m0.20.30.30.20.1
Temp. °C781215151385
Precip. %2020000000

Tonight: Mainly cloudy with 60 percent chance of showers. Risk of a thunderstorm after midnight. Low 7.

Weather: Blind River (local forecast), as of 5:01 a.m. EDT

Sun and moon

Civil dawn
7:12 a.m.
Sunrise
7:42 a.m.
Sunset
6:57 p.m.
Civil dusk
7:27 p.m.
Moonrise
6:34 a.m.
Moonset
6:16 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

The government depth survey from 1964 records a maximum depth of 9.1 m, drawn from 6 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 48 government surveys (2010–2014) that recorded them.

  • Yellow Perch47 of 48
  • Northern Pike38 of 48
  • Walleye35 of 48
  • Rock Bass23 of 48
  • Pumpkinseed22 of 48
  • Cisco14 of 48
  • Largemouth Bass10 of 48
  • Smallmouth Bass3 of 48
  • Rainbow Trout1 of 48
Forage fish and other species (12)

Forage fish

  • Spottail Shiner 9
  • Rainbow Smelt 8
  • Logperch 3
  • Emerald Shiner 2
  • Trout-Perch 2
  • Blacknose Shiner 1

Other

  • White Sucker 28
  • Brown Bullhead 22
  • Longnose Gar 11
  • Bowfin 4
  • Common Carp 1
  • Shorthead Redhorse 1

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 6 species from Bright Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Largemouth Bass35-40 cm124Mercury
Northern Pike55-60 cm84Mercury
Smallmouth Bass35-40 cm84Mercury
Walleye40-45 cm84Mercury
Cisco (Lake Herring)35-40 cm1616Precautionary
White Sucker45-50 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 10. Check seasons and limits before you fish.

Water

Clarity was measured with a Secchi disk in 12 years between 2009 and 2025; the latest annual mean is 2.3 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.