Rowan Lake
49.3194° N, 93.5576° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Rowan Lake, Ontario. 49.3194° N, 93.5576° W
Maximum depth 36.6 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/rowan-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.
- 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.
- Ontario Waterbody Location Identifier, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
Rowan Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 51.8 km² and lies 22 km east of Whitefish Bay.
Government surveys have recorded 19 fish species here, including lake whitefish, yellow perch and lake trout.
- Maximum depth
- 36.6 m
- deeper than 85% of the 2,688 surveyed lakes in Ontario
- Area
- 51.8 km²
- larger than 99% of the 18,731 lakes in Ontario
- Shoreline
- 268 km
- longer than 99% of the 18,731 lakes in Ontario
- Fish species
- 19
- more than 96% of the 2,454 surveyed lakes in Ontario
- Elevation
- 339 m
Today on the water
6.3 °C
Observed at Sioux Narrows, as of 4:00 a.m. CDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 1 p.m., wind from the southeast: the southeast shore is sheltered, waves build toward the northwest shore.
| Time | 5 a.m. | 8 a.m. | 11 a.m. | 2 p.m. | 5 p.m. | 8 p.m. | 11 p.m. | 2 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | SE 10 | SE 10 | SE 10 | SE 20 | SE 20 | SE 20 | SE 20 | SE 15 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | |||
| Temp. °C | 4 | 6 | 10 | 13 | 14 | 13 | 14 | 13 |
| Precip. % | 20 | 20 | 20 | 30 | 30 | 10 | 10 | 10 |
Tonight: A few clouds. Wind northwest 20 km/h becoming light this evening. Low plus 4.
Weather: Sioux Narrows (local forecast), as of 4:01 a.m. CDT
Sun and moon
- Civil dawn
- 6:54 a.m.
- Sunrise
- 7:26 a.m.
- Sunset
- 6:35 p.m.
- Civil dusk
- 7:07 p.m.
- Moonrise
- 6:19 a.m.
- Moonset
- 5:54 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
The government depth survey records a maximum depth of 36.6 m, drawn from 54 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 40 government surveys (2010–2010) that recorded them.
Forage fish and other species (8)
Forage fish
- Spottail Shiner 6
- Emerald Shiner 4
- Bluntnose Minnow 3
- Golden Shiner 1
- Logperch 1
- Mimic Shiner 1
- Trout-Perch 1
Other
- White Sucker 19
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 5 species from Rowan Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Lake Trout | 50-55 cm | 12 | 4 | PCB |
| Lake Whitefish | 45-50 cm | 16 | 16 | Precautionary |
| Northern Pike | 55-60 cm | 12 | 4 | Mercury |
| Smallmouth Bass | 35-40 cm | 12 | 4 | Mercury |
| Walleye | 40-45 cm | 16 | 4 | 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 5. Check seasons and limits before you fish.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.