Map of Matinenda Lake with depth contours

Matinenda Lake

46.377° N, 82.9539° W

Depth contours from the 1965 government survey. Not for navigation.

Download the depth map (SVG)

Matinenda Lake is 85.3 m deep at its deepest point, deeper than 99% of the 2,688 surveyed lakes in Ontario. It covers 41.5 km² and lies 2.6 km northwest of Blind River.

Government surveys have recorded 18 fish species here, including lake trout, cisco and rock bass.

Maximum depth
85.3 msurveyed 1965
deeper than 99% of the 2,688 surveyed lakes in Ontario
Area
41.5 km²
larger than 99% of the 18,731 lakes in Ontario
Shoreline
143 km
longer than 98% of the 18,731 lakes in Ontario
Water clarity
7.3 mSecchi depth, 2025
clearer than 97% of the 1,251 monitored lakes in Ontario
Fish species
18
more than 94% of the 2,454 surveyed lakes in Ontario
Elevation
232 m

Today on the water

5.8 °C

CloudyWind SE 5 km/h, gusts 35

Observed at Blind River, as of 2:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.3 m.

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/hvar. 5NW 10NW 20NW 20NW 10var. 5var. 5SE 10
Gusts40
Waves (est.) m0.10.10.30.3
Temp. °C778121515138
Precip. %30202000000

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

Weather: Blind River (local forecast), as of 2:02 a.m. EDT

Sun and moon

Civil dawn
7:10 a.m.
Sunrise
7:41 a.m.
Sunset
6:56 p.m.
Civil dusk
7:26 p.m.
Moonrise
6:33 a.m.
Moonset
6:14 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

8% of Matinenda Lake is deeper than 50 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 1965 records a maximum depth of 85.3 m, drawn from 147 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 63 government surveys (2009–2014) that recorded them.

  • Lake Trout37 of 63
  • Cisco30 of 63
  • Rock Bass29 of 63
  • Lake Whitefish27 of 63
  • Smallmouth Bass20 of 63
  • Yellow Perch14 of 63
  • Northern Pike5 of 63
  • Bluegill3 of 63
  • Burbot2 of 63
  • Pumpkinseed2 of 63
Forage fish and other species (8)

Forage fish

  • Rainbow Smelt 10
  • Bluntnose Minnow 5
  • Emerald Shiner 5
  • Deepwater Sculpin 1
  • Spoonhead Sculpin 1

Other

  • Brown Bullhead 1
  • Longnose Sucker 1
  • White Sucker 1

Numbers are the surveys that recorded each species.

Eating your catch

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

SpeciesLengthGeneral populationSensitive population*Contaminant
Lake Trout50-55 cm4Do not eatMercury
Northern Pike55-60 cm8Do not eatMercury
Smallmouth Bass35-40 cm8Do not eatMercury

* 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 15 years between 2003 and 2025; the latest annual mean is 7.3 m.

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

Getting on the water

1 listed boat launch. marks launches on the map.