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Map of Jacks Lakes with depth contours

Jacks Lakes

45.6908° N, 77.4876° W

Depth contours from the 1975 government survey. Not for navigation.

Download the depth map (SVG)

Jacks Lakes, Ontario. 45.6908° N, 77.4876° W

Maximum depth 9.1 m (1975 survey). Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/jacks-lakes/, 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.
  • Fisheries Management Zones, Ontario Ministry of Natural Resources. 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).
  • Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.

Jacks Lakes is 9.1 m deep at its deepest point, shallower than 76% of the 2,688 surveyed lakes in Ontario. It covers 0.24 km² and lies 7.7 km northeast of Bonnechere.

Government surveys have recorded 9 fish species here, including northern pike, largemouth bass and yellow perch.

Maximum depth
9.1 msurveyed 1975
shallower than 76% of the 2,688 surveyed lakes in Ontario
Area
0.24 km²
smaller than 73% of the 18,731 lakes in Ontario
Shoreline
3.5 km
shorter than 67% of the 18,731 lakes in Ontario
Fish species
9
more than 69% of the 2,454 surveyed lakes in Ontario
Elevation
176 m

Today on the water

2.5 °C

Wind calm

Observed at Barry's Bay, as of 5:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 m. Around 6 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

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/hW 15W 15NW 30NW 30NW 15var. 5var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.10.10.1
Temp. °C359121162-1
Precip. %4040402020000

Today: A mix of sun and cloud. 40 percent chance of showers this morning and early this afternoon. Wind becoming northwest 30 km/h gusting to 50 near noon. High 13. UV index 3 or moderate.

Weather: Barry's Bay (local forecast), as of 5:02 a.m. EDT

Sun and moon

Civil dawn
6:48 a.m.
Sunrise
7:18 a.m.
Sunset
6:34 p.m.
Civil dusk
7:04 p.m.
Moonrise
6:10 a.m.
Moonset
5:53 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

66% of Jacks Lakes is shallower than 3 m, and 25% is deeper than 5 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 1975 records a maximum depth of 9.1 m, drawn from 15 depth contours.

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

Fish

Sport fish by the share of the 13 government surveys (1948–2010) that recorded them.

  • Northern Pike10 of 13
  • Largemouth Bass7 of 13
  • Yellow Perch7 of 13
  • Pumpkinseed5 of 13
  • Rock Bass3 of 13
  • Cisco1 of 13Not recorded since 1975
Forage fish and other species (3)

Forage fish

  • Golden Shiner 5

Other

  • Brown Bullhead 6
  • White Sucker 5

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 1 species from Jacks Lakes. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Northern Pike50-55 cm4Do 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 15. Check seasons and limits before you fish.