White Otter Lake
49.0906° N, 91.8631° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)White Otter Lake, Ontario. 49.0906° N, 91.8631° W
Maximum depth 48.8 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/white-otter-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.
- Lake Partner Program, Ontario Ministry of the Environment, Conservation and Parks. 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.
White Otter Lake is 48.8 m deep at its deepest point, deeper than 93% of the 2,688 surveyed lakes in Ontario. It covers 85.1 km² and lies 26 km northwest of Steep Rock Lake.
Government surveys have recorded 8 fish species here, including lake trout, lake whitefish and burbot.
- Maximum depth
- 48.8 m
- deeper than 93% of the 2,688 surveyed lakes in Ontario
- Area
- 85.1 km²
- larger than 99% of the 18,731 lakes in Ontario
- Shoreline
- 222 km
- longer than 99% of the 18,731 lakes in Ontario
- Water clarity
- 5.2 mSecchi depth, 2003
- clearer than 82% of the 1,251 monitored lakes in Ontario
- Fish species
- 8
- more than 65% of the 2,454 surveyed lakes in Ontario
- Elevation
- 418 m
Today on the water
2.3 °C
Observed at Ignace, as of 3:00 a.m. EST
choppy Estimated waves, next 12 hours: up to 0.3 m. Around 10 a.m., wind from the south: the south shore is sheltered, waves build toward the north shore.
| Time | 4 a.m. | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | S 10 | S 10 | S 20 | SE 20 | SE 20 | SE 30 | SE 30 | SE 20 |
| Gusts km/h | 40 | 50 | 50 | 40 | ||||
| Waves (est.) m | 0.2 | 0.2 | 0.3 | 0.3 | ||||
| Temp. °C | 2 | 1 | 7 | 11 | 11 | 11 | 11 | 11 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Tonight: Partly cloudy. 30 percent chance of showers early this evening. Clearing this evening. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low plus 1.
Weather: Ignace (local forecast), as of 3:00 a.m. EST
Sun and moon
- Civil dawn
- 6:47 a.m.
- Sunrise
- 7:19 a.m.
- Sunset
- 6:29 p.m.
- Civil dusk
- 7:00 p.m.
- Moonrise
- 6:12 a.m.
- Moonset
- 5:48 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
51% of White Otter Lake 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 records a maximum depth of 48.8 m, drawn from 115 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 15 government surveys (2007–2007) that recorded them.
Other species (1)
- White Sucker 3
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 7 species from White Otter Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Lake Trout | 50-55 cm | 8 | 4 | Mercury |
| 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 | 8 | Mercury |
| Burbot (Ling) | 50-55 cm | 4 | Do not eat | 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 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.