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Map of Upper Chemong Lake with depth contours

Upper Chemong Lake

44.4813° N, 78.3443° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Upper Chemong Lake, Ontario. 44.4813° N, 78.3443° W

Maximum depth 6.7 m. Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/upper-chemong-lake/, 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.
  • 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).
  • Ontario Waterbody Location Identifier, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.

Upper Chemong Lake is 6.7 m deep at its deepest point, shallower than 81% of the 2,688 surveyed lakes in Ontario. It covers 8.48 km² and lies 2.2 km northwest of Selwyn.

Government surveys have recorded 11 fish species here, including bluegill, yellow perch and black crappie.

Maximum depth
6.7 m
shallower than 81% of the 2,688 surveyed lakes in Ontario
Area
8.48 km²
larger than 94% of the 18,731 lakes in Ontario
Shoreline
32.2 km
longer than 93% of the 18,731 lakes in Ontario
Water clarity
3 mSecchi depth, 2025
less clear than 65% of the 1,251 monitored lakes in Ontario
Fish species
11
more than 77% of the 2,454 surveyed lakes in Ontario
Elevation
244 m

Today on the water

6.8 °C

Mainly ClearWind WSW 8 km/h

Observed at Peterborough, as of 3:00 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.

Time4 a.m.7 a.m.10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.
Wind km/hW 15W 15W 15NW 30NW 30NW 15var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.10.3
Temp. °C561014161163
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: Peterborough (local forecast), as of 3:02 a.m. EDT

Sun and moon

Civil dawn
6:51 a.m.
Sunrise
7:21 a.m.
Sunset
6:39 p.m.
Civil dusk
7:08 p.m.
Moonrise
6:13 a.m.
Moonset
5:57 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

2 low risk

Peterborough, as of 2:00 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

83% of Upper Chemong Lake 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 records a maximum depth of 6.7 m, drawn from 23 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 6 government surveys (2009–2009) that recorded them.

  • Bluegill6 of 6
  • Yellow Perch6 of 6
  • Black Crappie4 of 6
  • Largemouth Bass4 of 6
  • Pumpkinseed4 of 6
  • Smallmouth Bass3 of 6
  • Rock Bass2 of 6
  • Muskellunge1 of 6
  • Walleye1 of 6
Forage fish and other species (2)

Forage fish

  • Golden Shiner 1

Other

  • Brown Bullhead 1

Numbers are the surveys that recorded each species.

Fishing regulations: Fisheries Management Zone 17. Check seasons and limits before you fish.

Water

Clarity was measured with a Secchi disk in 2 years between 2024 and 2025; the latest annual mean is 3 m.

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

Getting on the water

3 listed boat launches; 1 with parking listed. marks launches on the map.

East shore

South end