Marl Lake
44.1638° N, 81.0523° W
Shoreline and neighbouring water from open government data.
Download the map (SVG)Marl Lake, Ontario. 44.1638° N, 81.0523° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/marl-lake-near-hanover/, 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.
Marl Lake covers 0.16 km², making it smaller than 86% of the 18,731 lakes in Ontario. It lies 2.4 km west of Hanover.
Government surveys have recorded 5 fish species here, including largemouth bass, pumpkinseed and rock bass.
- Area
- 0.16 km²
- smaller than 86% of the 18,731 lakes in Ontario
- Shoreline
- 3 km
- shorter than 75% of the 18,731 lakes in Ontario
- Water clarity
- 6.1 mSecchi depth, 2024
- clearer than 91% of the 1,251 monitored lakes in Ontario
- Fish species
- 5
- more than 61% of the 2,454 surveyed lakes in Ontario
- Elevation
- 273 m
Today on the water
6.2 °C
Observed at Walkerton, as of 4:00 a.m. EDT
calm Estimated waves, next 12 hours: up to 0.1 m. Around 5 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.
| Time | 5 a.m. | 8 a.m. | 11 a.m. | 2 p.m. | 5 p.m. | 8 p.m. | 11 p.m. | 2 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | W 15 | NW 20 | NW 30 | NW 30 | NE 10 | E 10 | SE 10 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |||
| Temp. °C | 4 | 7 | 11 | 14 | 15 | 12 | 8 | 5 |
| Precip. % | 40 | 40 | 40 | 20 | 20 | 0 | 0 | 0 |
Tonight: Partly cloudy with 60 percent chance of showers. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low plus 4.
Weather: Walkerton (local forecast), as of 4:01 a.m. EDT
Sun and moon
- Civil dawn
- 7:02 a.m.
- Sunrise
- 7:31 a.m.
- Sunset
- 6:50 p.m.
- Civil dusk
- 7:19 p.m.
- Moonrise
- 6:24 a.m.
- Moonset
- 6:09 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
2 low risk
Tiverton, as of 4:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Fish
Sport fish by the share of the 1 government surveys (1957–1957) that recorded them.
Other species (1)
- White Sucker 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 Marl Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Largemouth Bass | 30-35 cm | 8 | Do not eat | Mercury |
| Yellow Perch | 20-25 cm | 8 | 4 | 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 15 years between 2002 and 2024; the latest annual mean is 6.1 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.