South Branch Lake
47.0696° N, 83.671° W
Depth contours from the 1971 government survey. Not for navigation.
Download the depth map (SVG)South Branch Lake, Ontario. 47.0696° N, 83.671° W
Maximum depth 12.2 m (1971 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/south-branch-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.
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
South Branch Lake is 12.2 m deep at its deepest point, shallower than 65% of the 2,688 surveyed lakes in Ontario. It covers 2.05 km² and lies 21 km northwest of Ranger Lake.
Government surveys have recorded 10 fish species here, including brook trout.
- Maximum depth
- 12.2 msurveyed 1971
- shallower than 65% of the 2,688 surveyed lakes in Ontario
- Area
- 2.05 km²
- larger than 81% of the 18,731 lakes in Ontario
- Shoreline
- 15.1 km
- longer than 83% of the 18,731 lakes in Ontario
- Fish species
- 10
- more than 73% of the 2,454 surveyed lakes in Ontario
- Elevation
- 478 m
Sun and moon today
- Civil dawn
- 7:14 a.m.
- Sunrise
- 7:44 a.m.
- Sunset
- 6:58 p.m.
- Civil dusk
- 7:28 p.m.
- Moonrise
- 6:36 a.m.
- Moonset
- 6:17 p.m.
- Moon
- Waning crescent, 1% lit
Depth
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 1971 records a maximum depth of 12.2 m, drawn from 13 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 36 government surveys (2008–2013) that recorded them.
Forage fish and other species (9)
Forage fish
- Common Shiner 25
- Creek Chub 15
- Brassy Minnow 8
- Golden Shiner 6
- Blacknose Dace 4
- Fathead Minnow 4
- Brook Stickleback 2
- Iowa Darter 1
Other
- White Sucker 36
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 2 species from South Branch Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Brook Trout | 30-35 cm | 4 | Do not eat | Mercury |
| Walleye | 30-35 cm | 4 | Do not eat | Mercury |
* 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 10. Check seasons and limits before you fish.
Getting on the water
1 listed boat launch. marks launches on the map.
- Branch Lake