Penassen Lakes
48.5844° N, 89.0451° W
Depth contours from the 1987 government survey. Not for navigation.
Download the depth map (SVG)Penassen Lakes, Ontario. 48.5844° N, 89.0451° W
Maximum depth 14 m (1987 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/penassen-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).
- 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.
Penassen Lakes is 14 m deep at its deepest point, shallower than 58% of the 2,688 surveyed lakes in Ontario. It covers 0.42 km² and lies 10 km north of Wild Goose.
Government surveys have recorded 8 fish species here, including brook trout.
- Maximum depth
- 14 msurveyed 1987
- shallower than 58% of the 2,688 surveyed lakes in Ontario
- Area
- 0.42 km²
- smaller than 55% of the 18,731 lakes in Ontario
- Shoreline
- 3.9 km
- shorter than 62% of the 18,731 lakes in Ontario
- Fish species
- 8
- more than 69% of the 2,454 surveyed lakes in Ontario
- Elevation
- 443 m
Today on the water
5.5 °C
Observed at Thunder Bay, as of 11:00 a.m. EDT
calm Estimated waves, next 12 hours: up to 0.1 m.
| Time | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. | 3 a.m. | 6 a.m. | 9 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | var. 5 | SE 10 | SE 10 | SE 20 | SE 20 | SE 20 | SE 20 | SE 20 |
| Gusts km/h | 40 | 40 | 40 | 40 | 40 | |||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | ||||
| Temp. °C | 9 | 13 | 11 | 9 | 9 | 8 | 9 | 11 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Today: Clear. Becoming a mix of sun and cloud this morning. High 13. UV index 3 or moderate.
Weather: Thunder Bay (local forecast), as of 11:01 a.m. EDT
Sun and moon
- Civil dawn
- 7:36 a.m.
- Sunrise
- 8:07 a.m.
- Sunset
- 7:18 p.m.
- Civil dusk
- 7:49 p.m.
- Moonrise
- 7:00 a.m.
- Moonset
- 6:37 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Thunder Bay, as of 10:00 a.m. EDT
Depth
67% of Penassen Lakes is shallower than 3 m, and 18% 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 1987 records a maximum depth of 14 m, drawn from 21 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 20 government surveys (2008–2013) that recorded them.
Forage fish and other species (7)
Forage fish
- Lake Chub 9
- Northern Redbelly Dace 9
- Brook Stickleback 7
- Finescale Dace 6
- Northern Pearl Dace 6
- Johnny Darter 2
Other
- Longnose Sucker 6
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 3 species from Penassen Lakes. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Brook Trout | 30-35 cm | 8 | 4 | Mercury |
| Longnose Sucker | 40-45 cm | 16 | 8 | Mercury |
| White Sucker | 35-40 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 6. Check seasons and limits before you fish.