Santoy Lake
48.8628° N, 86.8819° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Santoy Lake, Ontario. 48.8628° N, 86.8819° W
Maximum depth 91.4 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/santoy-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.
- 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.
- 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.
- Real-time hydrometric data, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
- National Water Data Archive (HYDAT) daily means, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
- 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.
Santoy Lake is 91.4 m deep at its deepest point, deeper than 99% of the 2,688 surveyed lakes in Ontario. It covers 9.98 km² and lies 11 km northwest of Ripple.
- Maximum depth
- 91.4 m
- deeper than 99% of the 2,688 surveyed lakes in Ontario
- Area
- 9.98 km²
- larger than 95% of the 18,731 lakes in Ontario
- Shoreline
- 27.1 km
- longer than 91% of the 18,731 lakes in Ontario
- Elevation
- 247 m
Today on the water
1.6 °C
Observed at Terrace Bay, as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 2 p.m., wind from the southwest: the southwest shore is sheltered, waves build toward the northeast 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 | NW 10 | NW 10 | W 10 | SW 10 | SW 15 | var. 5 | SE 15 | SE 15 |
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | |||
| Temp. °C | 2 | 0 | 4 | 10 | 11 | 10 | 9 | 7 |
| Precip. % | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 20 |
Tonight: Partly cloudy with 60 percent chance of showers. Wind north 20 km/h gusting to 40 becoming light this evening. Low minus 1.
Weather: Terrace Bay (local forecast), as of 3:03 a.m. EDT
Water level
Steel River below Santoy Lake: 6.78 m at 2:25 a.m. EDT: 41 cm below the median for this time of year, below the normal range.
Normal range (25th–75th percentile, HYDAT) Last 7 days
Provisional real-time data, subject to revision. hydrometric station 02BA006
Sun and moon
- Civil dawn
- 7:27 a.m.
- Sunrise
- 7:59 a.m.
- Sunset
- 7:09 p.m.
- Civil dusk
- 7:41 p.m.
- Moonrise
- 6:51 a.m.
- Moonset
- 6:28 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
47% of Santoy Lake is deeper than 50 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 91.4 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.
Getting on the water
1 listed boat launch; 1 with parking listed. marks launches on the map.
- Santoy Public Boat Launch
Follow this lake
Every Friday by email: the Environment Canada forecast, the water level at the nearest gauge and any weather alerts in effect.