Lake Couchiching
44.6643° N, 79.3763° W
Shoreline and neighbouring water from open government data.
Download the map (SVG)Lake Couchiching, Ontario. 44.6643° N, 79.3763° W
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/lake-couchiching/, 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.
- 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.
- 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.
- Ontario Waterbody Location Identifier, Ontario Ministry of Natural Resources. 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.
Lake Couchiching covers 47.1 km², making it larger than 99% of the 18,731 lakes in Ontario. It lies 1.2 km north of Orillia.
Government surveys have recorded 26 fish species here, including pumpkinseed, yellow perch and rock bass.
- Area
- 47.1 km²
- larger than 99% of the 18,731 lakes in Ontario
- Shoreline
- 73 km
- longer than 97% of the 18,731 lakes in Ontario
- Water clarity
- 3.8 mSecchi depth, 2020
- clearer than 56% of the 1,251 monitored lakes in Ontario
- Fish species
- 26
- more than 98% of the 2,454 surveyed lakes in Ontario
- Elevation
- 216 m
Today on the water
5.6 °C
Observed at Orillia, as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.5 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast 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 | W 15 | W 15 | NW 20 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.2 | 0.2 | 0.3 | 0.5 | ||||
| Temp. °C | 4 | 5 | 9 | 13 | 15 | 12 | 8 | 5 |
| Precip. % | 40 | 40 | 40 | 40 | 20 | 20 | 0 | 0 |
Tonight: Partly cloudy with 60 percent chance of showers. Risk of a thunderstorm early this evening. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low plus 4.
Weather: Orillia (local forecast), as of 3:03 a.m. EDT
Sun and moon
- Civil dawn
- 6:56 a.m.
- Sunrise
- 7:25 a.m.
- Sunset
- 6:43 p.m.
- Civil dusk
- 7:12 p.m.
- Moonrise
- 6:17 a.m.
- Moonset
- 6:01 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Barrie, as of 2:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Fish
Sport fish by the share of the 60 government surveys (1991–2013) that recorded them.
Forage fish and other species (17)
Forage fish
- Spottail Shiner 12
- Common Shiner 6
- Bluntnose Minnow 5
- Banded Killifish 4
- Iowa Darter 3
- Mottled Sculpin 3
- Blacknose Shiner 2
- Blackchin Shiner 1
- Brook Stickleback 1
- Central Mudminnow 1
- Emerald Shiner 1
- Golden Shiner 1
- Spotfin Shiner 1
Other
- Brown Bullhead 23
- Bowfin 2
- Common Carp 1
- Round Goby 1
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 6 species from Lake Couchiching. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Bluegill | 15-20 cm | 16 | 16 | Precautionary |
| Largemouth Bass | 30-35 cm | 16 | 8 | Mercury |
| Northern Pike | 55-60 cm | 16 | 4 | Mercury |
| Smallmouth Bass | 35-40 cm | 12 | 4 | Mercury |
| Walleye | 40-45 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 11 years between 2006 and 2020; the latest annual mean is 3.8 m.
Getting on the water
17 listed boat launches; 15 with parking listed. marks launches on the map.
North end
- Public Access
- Public/emergency Access
East shore
- Emergency Access
- Emergency Access
South end
- City of Orillia, Centennial Park
- City of Orillia, Collins Drive
- Emergency Access
- Emergency Access
- Emergency Access
5 more on the south end
- Emergency Access
- Emergency Access
- Public Access
- Public Access
- Public Access
West shore
- Emergency Access
- Emergency Access
- Emergency Access
Photos
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.