Harmon Lake
49.9455° N, 90.2167° W
Shoreline and neighbouring water from open government data.
Download the map (SVG)Harmon Lake, Ontario. 49.9455° N, 90.2167° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/harmon-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.
- 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.
Harmon Lake covers 28.5 km², making it larger than 98% of the 18,731 lakes in Ontario. It lies 25 km south of Allanwater Bridge.
Government surveys have recorded 12 fish species here, including walleye, cisco and yellow perch.
- Area
- 28.5 km²
- larger than 98% of the 18,731 lakes in Ontario
- Shoreline
- 164 km
- longer than 99% of the 18,731 lakes in Ontario
- Fish species
- 12
- more than 81% of the 2,454 surveyed lakes in Ontario
- Elevation
- 425 m
Today on the water
-0.9 °C
Observed at Savant Lake, as of 3:00 a.m. CDT
choppy Estimated waves, next 12 hours: up to 0.2 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 | var. 5 | S 10 | S 20 | S 20 | SE 10 | SE 20 | SE 20 | SE 20 |
| Gusts km/h | 40 | 40 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | ||||
| Temp. °C | -1 | 1 | 7 | 11 | 11 | 11 | 9 | 6 |
| Precip. % | 20 | 20 | 20 | 20 | 40 | 40 | 40 | 40 |
Tonight: Mainly cloudy. 30 percent chance of showers early this evening. Clearing near midnight. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low minus 1.
Weather: Savant Lake (local forecast), as of 3:01 a.m. CDT
Sun and moon
- Civil dawn
- 6:41 a.m.
- Sunrise
- 7:13 a.m.
- Sunset
- 6:21 p.m.
- Civil dusk
- 6:54 p.m.
- Moonrise
- 6:05 a.m.
- Moonset
- 5:40 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Fish
Sport fish by the share of the 30 government surveys (2008–2008) that recorded them.
Forage fish and other species (4)
Forage fish
- Spottail Shiner 7
- Trout-Perch 5
Other
- White Sucker 8
- Silver Redhorse 2
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 2 species from Harmon Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Northern Pike | 65-70 cm | 2 | Do not eat | Mercury |
| Walleye | 40-45 cm | 4 | Do not eat | 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 6. Check seasons and limits before you fish.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.