Big Salmon Lake
44.54° N, 76.4976° W
Depth contours from the 1969 government survey. Not for navigation.
Download the depth map (SVG)Big Salmon Lake, Ontario. 44.54° N, 76.4976° W
Maximum depth 39.6 m (1969 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/big-salmon-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.
- 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).
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
Big Salmon Lake is 39.6 m deep at its deepest point, deeper than 88% of the 2,688 surveyed lakes in Ontario. It covers 1.62 km² and lies 2.8 km west of Buck Lake.
Government surveys have recorded 6 fish species here, including rock bass, smallmouth bass and largemouth bass.
- Maximum depth
- 39.6 msurveyed 1969
- deeper than 88% of the 2,688 surveyed lakes in Ontario
- Area
- 1.62 km²
- larger than 77% of the 18,731 lakes in Ontario
- Shoreline
- 14.4 km
- longer than 82% of the 18,731 lakes in Ontario
- Fish species
- 6
- more than 57% of the 2,454 surveyed lakes in Ontario
- Elevation
- 159 m
Today on the water
10.4 °C
Observed at Sydenham, as of 9:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.
| Time | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. | 7 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | |||
| Temp. °C | 10 | 13 | 15 | 12 | 7 | 2 | 0 | 1 |
| Precip. % | 40 | 40 | 20 | 20 | 0 | 0 | 0 | 0 |
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 15. UV index 4 or moderate.
Weather: Sydenham (local forecast), as of 9:03 a.m. EDT
Sun and moon
- Civil dawn
- 6:44 a.m.
- Sunrise
- 7:13 a.m.
- Sunset
- 6:31 p.m.
- Civil dusk
- 7:01 p.m.
- Moonrise
- 6:05 a.m.
- Moonset
- 5:50 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Kingston, as of 9:00 a.m. EDT
Depth
21% of Big Salmon Lake is shallower than 3 m, and 34% is deeper than 20 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 1969 records a maximum depth of 39.6 m, drawn from 36 depth contours.
- Download the depth map (SVG)Printing this page gives the map on one sheet, with scale and sources.
Not for navigation. Depths are from government surveys and may be outdated.
Fish
Sport fish by the share of the 7 government surveys that recorded them.
Other species (1)
- White Sucker 6
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 7 species from Big Salmon Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Bluegill | 15-20 cm | 16 | 16 | Precautionary |
| Lake Trout | 50-55 cm | 16 | 4 | Mercury, PCB |
| Largemouth Bass | 30-35 cm | 16 | 4 | Mercury |
| Smallmouth Bass | 35-40 cm | 12 | 4 | Mercury |
| Yellow Perch | 20-25 cm | 16 | 12 | Precautionary |
| Cisco (Lake Herring) | 25-30 cm | 16 | 8 | Mercury |
| White Sucker | 40-45 cm | 16 | 16 | Precautionary |
* 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 18. Check seasons and limits before you fish.
Getting on the water
1 listed boat launch. marks launches on the map.
- Boat launch