Map of North Muldrew Lake

North Muldrew Lake

44.9038° N, 79.4317° W

Shoreline and neighbouring water from open government data.

Download the map (SVG)

North Muldrew Lake covers 1.57 km², making it larger than 76% of the 18,731 lakes in Ontario. It lies 2.8 km southwest of West Gravenhurst.

Government surveys have recorded 9 fish species here, including smallmouth bass, cisco and northern pike.

Area
1.57 km²
larger than 76% of the 18,731 lakes in Ontario
Shoreline
20.2 km
longer than 88% of the 18,731 lakes in Ontario
Water clarity
3.6 mSecchi depth, 2025
clearer than 52% of the 1,251 monitored lakes in Ontario
Fish species
9
more than 69% of the 2,454 surveyed lakes in Ontario
Elevation
223 m

Today on the water

7.4 °C

ClearWind NNW 13 km/h

Observed at Muskoka, as of 4:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.3 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
Time5 a.m.8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.
Wind km/hW 15W 15W 15NW 30NW 30NW 15var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.10.30.3
Temp. °C4691314952
Precip. %4040402020000

Tonight: Partly cloudy with 60 percent chance of showers. Risk of a thunderstorm early this evening. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low plus 4.

Weather: Muskoka (local forecast), as of 4:01 a.m. EDT

Sun and moon

Civil dawn
6:56 a.m.
Sunrise
7:25 a.m.
Sunset
6:43 p.m.
Civil dusk
7:12 p.m.
Moonrise
6:18 a.m.
Moonset
6:01 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

2 low risk

Dorset, as of 4:00 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.

Fish

Sport fish by the share of the 8 government surveys (2014–2014) that recorded them.

  • Smallmouth Bass5 of 8
  • Cisco4 of 8
  • Northern Pike3 of 8
  • Rock Bass3 of 8
  • Yellow Perch3 of 8
  • Largemouth Bass1 of 8
  • Pumpkinseed1 of 8
Other species (2)
  • Brown Bullhead 1
  • White Sucker 1

Numbers are the surveys that recorded each species.

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

Water

Clarity was measured with a Secchi disk in 29 years between 1994 and 2025; the latest annual mean is 3.6 m.

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