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Map of Lake Scugog with depth contours

Lake Scugog

44.1834° N, 78.8572° W

Depth contours from the 1968 government survey. Not for navigation.

Download the depth map (SVG)

Lake Scugog, Ontario. 44.1834° N, 78.8572° W

Maximum depth 6.1 m (1968 survey). Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/lake-scugog/, compiled October 9, 2026

  • Canadian Geographical Names Database, Natural Resources Canada. Contains information licensed under the Open Government Licence – Canada.
  • HydroLAKES v1.0, Messager et al. 2016 / WWF HydroSHEDS. Licensed under CC BY 4.0.
  • Census boundaries and population, 2021, Statistics Canada. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada.
  • Aquatic Resource Area survey points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fishing access points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fisheries Management Zones, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Lake Partner Program, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
  • Bathymetry lines and survey index, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Real-time hydrometric data, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
  • National Water Data Archive (HYDAT) daily means, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
  • City page weather forecasts and alerts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
  • Air Quality Health Index observations and forecasts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
  • Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
  • Photographs, Wikimedia Commons contributors. Each photo carries its own licence (CC0, public domain, CC BY or CC BY-SA), credited where shown.

Lake Scugog is 6.1 m deep at its deepest point, shallower than 86% of the 2,688 surveyed lakes in Ontario. It covers 66.4 km² and lies beside Williams Point.

Government surveys have recorded 33 fish species here, including yellow perch, black crappie and bluegill.

Maximum depth
6.1 msurveyed 1968
shallower than 86% of the 2,688 surveyed lakes in Ontario
Area
66.4 km²
larger than 99% of the 18,731 lakes in Ontario
Shoreline
149 km
longer than 99% of the 18,731 lakes in Ontario
Water clarity
1.4 mSecchi depth, 2025
less clear than 97% of the 1,251 monitored lakes in Ontario
Fish species
33
more than 99% of the 2,454 surveyed lakes in Ontario
Elevation
247 m

Today on the water

7.7 °C

Wind W 9 km/h, gusts 55

Observed at Port Perry, as of 2:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.5 m.

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/hW 15W 15W 15NW 30NW 30NW 15var. 5var. 5
Gusts5050
Waves (est.) m0.20.20.20.5
Temp. °C668121514106
Precip. %20404040202000

Tonight: Partly cloudy. 40 percent chance of showers this evening. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low plus 5.

Weather: Port Perry (local forecast), as of 2:02 a.m. EDT

Water level

Lake Scugog at Scugog Island Marina: 9.02 m at Thu 11:45 p.m. EDT: 9 cm above the median for this time of year, above the normal range.

99,9998.91

Normal range (25th–75th percentile, HYDAT) Last 7 days

Provisional real-time data, subject to revision. hydrometric station 02HG006

Sun and moon

Civil dawn
6:53 a.m.
Sunrise
7:22 a.m.
Sunset
6:41 p.m.
Civil dusk
7:10 p.m.
Moonrise
6:15 a.m.
Moonset
6:00 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Oshawa, as of 1:00 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

90% of Lake Scugog is shallower than 3 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 1968 records a maximum depth of 6.1 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 80 government surveys (2008–2014) that recorded them.

  • Yellow Perch70 of 80
  • Black Crappie56 of 80
  • Bluegill51 of 80
  • Pumpkinseed47 of 80
  • Largemouth Bass46 of 80
  • Walleye33 of 80
  • Rock Bass31 of 80
  • Smallmouth Bass23 of 80
  • Muskellunge1 of 80
Forage fish and other species (24)

Forage fish

  • Spottail Shiner 27
  • Golden Shiner 21
  • Trout-Perch 14
  • Brook Silverside 9
  • Banded Killifish 6
  • Iowa Darter 5
  • Blackchin Shiner 4
  • Blacknose Shiner 3
  • Common Shiner 3
  • Emerald Shiner 3
  • Logperch 3
  • Central Mudminnow 2
  • Fathead Minnow 2
  • Blacknose Dace 1
  • Bluntnose Minnow 1
  • Creek Chub 1
  • Johnny Darter 1
  • Mimic Shiner 1
  • Rosyface Shiner 1
  • Spotfin Shiner 1
  • Striped Shiner 1

Other

  • Brown Bullhead 9
  • White Sucker 8
  • Common Carp 3

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 12 species from Lake Scugog. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Black Crappie20-25 cm168Mercury
Bluegill15-20 cm1616Precautionary
Largemouth Bass30-35 cm164Mercury
Muskellunge>75 cm2Do not eatMercury
Pumpkinseed15-20 cm168Mercury
Rock Bass15-20 cm164Mercury
Smallmouth Bass35-40 cm124Mercury
Walleye40-45 cm168Mercury
Yellow Perch20-25 cm168Mercury
Brown Bullhead25-30 cm1616Precautionary
Common Carp55-60 cm1616Precautionary
White Sucker35-40 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 17. Check seasons and limits before you fish.

Water

Clarity was measured with a Secchi disk in 25 years between 1997 and 2025; the latest annual mean is 1.4 m.

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

Getting on the water

10 listed access points, 9 of them boat launches; 1 with parking listed. marks launches on the map.

North shore

Northeast shore

Southeast shore

Southwest shore

Northwest shore

Near Carnegie Beach

Photos

Lake Scugog (87160882)
Photo: Rick Harris from Toronto, Ontario, Canada, CC BY-SA 2.0, via Wikimedia Commons
Lake Scugog (89128905)
Photo: Rick Harris from Toronto, Ontario, Canada, CC BY-SA 2.0, via Wikimedia Commons
Lake Scugog in Port Perry, July 23 2026 (03)
Photo: Dillan Payne, CC BY-SA 4.0, via Wikimedia Commons