Preston Lake
43.9856° N, 79.3788° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Preston Lake, Ontario. 43.9856° N, 79.3788° W
Maximum depth 4.6 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/preston-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).
- 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.
- Photographs, Wikimedia Commons contributors. Each photo carries its own licence (CC0, public domain, CC BY or CC BY-SA), credited where shown.
Preston Lake is 4.6 m deep at its deepest point, shallower than 90% of the 2,688 surveyed lakes in Ontario. It covers 0.27 km² and lies 1.6 km southeast of Vandorf.
Government surveys have recorded 5 fish species here, including largemouth bass, pumpkinseed and smallmouth bass.
- Maximum depth
- 4.6 m
- shallower than 90% of the 2,688 surveyed lakes in Ontario
- Area
- 0.27 km²
- smaller than 69% of the 18,731 lakes in Ontario
- Shoreline
- 3.6 km
- shorter than 66% of the 18,731 lakes in Ontario
- Water clarity
- 4.1 mSecchi depth, 2025
- clearer than 63% of the 1,251 monitored lakes in Ontario
- Fish species
- 5
- more than 53% of the 2,454 surveyed lakes in Ontario
- Elevation
- 307 m
Today on the water
9 °C
Observed at Newmarket, as of 9:00 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.
| Time | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. | 7 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | |||
| Temp. °C | 10 | 14 | 17 | 13 | 8 | 5 | 3 | 5 |
| Precip. % | 40 | 40 | 20 | 20 | 0 | 0 | 0 | 0 |
Today: A mix of sun and cloud. 40 percent chance of showers this morning and early this afternoon. Wind becoming northwest 30 km/h gusting to 50 near noon. High 17. UV index 4 or moderate.
Weather: Newmarket (local forecast), as of 9:04 a.m. EDT
Sun and moon
- Civil dawn
- 6:55 a.m.
- Sunrise
- 7:24 a.m.
- Sunset
- 6:43 p.m.
- Civil dusk
- 7:12 p.m.
- Moonrise
- 6:17 a.m.
- Moonset
- 6:02 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Newmarket, as of 9:00 a.m. EDT
Depth
47% of Preston Lake is shallower than 1 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 4.6 m, drawn from 6 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 2 government surveys (1971–1980) that recorded them.
Other species (2)
- White Sucker 2
- Yellow Bullhead 1
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 2 species from Preston Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Largemouth Bass | 30-35 cm | 12 | 4 | Mercury |
| Yellow Perch | 20-25 cm | 16 | 8 | 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 16. Check seasons and limits before you fish.
Water
Clarity was measured with a Secchi disk in 19 years between 1995 and 2025; the latest annual mean is 4.1 m.
Photos
