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Map of Spring Lake with depth contours

Spring Lake

45.8103° N, 79.6817° W

Depth contours from the 1971 government survey. Not for navigation.

Download the depth map (SVG)

Spring Lake, Ontario. 45.8103° N, 79.6817° W

Maximum depth 48.8 m (1971 survey). Scale bar on the map.

Not for navigation. Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/spring-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.
  • 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.

Spring Lake is 48.8 m deep at its deepest point, deeper than 93% of the 2,688 surveyed lakes in Ontario. It covers 2.43 km² and lies 5.8 km southwest of Rye.

Maximum depth
48.8 msurveyed 1971
deeper than 93% of the 2,688 surveyed lakes in Ontario
Area
2.43 km²
larger than 84% of the 18,731 lakes in Ontario
Shoreline
13.9 km
longer than 82% of the 18,731 lakes in Ontario
Water clarity
4.3 mSecchi depth, 2025
clearer than 68% of the 1,251 monitored lakes in Ontario
Elevation
299 m

Today on the water

7.5 °C

Observed at Dunchurch, as of 5:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Time6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.
Wind km/hW 15W 15NW 30NW 30NW 15var. 5var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.20.20.1
Temp. °C57101312732
Precip. %6030202020000

Today: A mix of sun and cloud. 60 percent chance of showers this morning. Risk of a thunderstorm early this morning. Wind becoming northwest 30 km/h gusting to 50 near noon. High 14. UV index 4 or moderate.

Weather: Dunchurch (local forecast), as of 5:03 a.m. EDT

Sun and moon

Civil dawn
6:57 a.m.
Sunrise
7:27 a.m.
Sunset
6:43 p.m.
Civil dusk
7:13 p.m.
Moonrise
6:19 a.m.
Moonset
6:02 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Parry Sound, as of 4:00 a.m. EDT

Data Source: Environment and Climate Change Canada. Local times.

How waves are estimated

Significant wave height from the forecast hourly wind and the open-water distance (fetch) upwind, using the SMB method (US Army Corps of Engineers Shore Protection Manual, 1984), rounded up to the next 0.1 m. It is not a measurement: gusts, leftover swell and shoals can make water rougher. Under 0.2 m: calm; 0.2–0.5 m: choppy; over 0.5 m: rough.

Depth

22% of Spring Lake is shallower than 3 m, and 35% 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 from 1971 records a maximum depth of 48.8 m, drawn from 27 depth contours.

Not for navigation. Depths are from government surveys and may be outdated.

Water

Clarity was measured with a Secchi disk in 11 years between 2008 and 2025; the latest annual mean is 4.3 m.

Water clarity (Secchi depth, m)
Total phosphorus (µg/L)

Getting on the water

1 listed boat launch; 1 with parking listed. marks launches on the map.