Red Horse Lake
44.5346° N, 76.0845° W
Depth contours from the 1959 government survey. Not for navigation.
Download the depth map (SVG)Red Horse Lake, Ontario. 44.5346° N, 76.0845° W
Maximum depth 36.6 m (1959 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/red-horse-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.
- Fish stocking for recreational purposes, 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.
- 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.
Red Horse Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 3.48 km² and lies beside Black Rapids.
Government surveys have recorded 1 fish species here: lake trout.
- Maximum depth
- 36.6 msurveyed 1959
- deeper than 85% of the 2,688 surveyed lakes in Ontario
- Area
- 3.48 km²
- larger than 88% of the 18,731 lakes in Ontario
- Shoreline
- 33.6 km
- longer than 93% of the 18,731 lakes in Ontario
- Water clarity
- 4 mSecchi depth, 2018
- clearer than 60% of the 1,251 monitored lakes in Ontario
- Fish species
- 1
- fewer than 100% of the 2,454 surveyed lakes in Ontario
- Elevation
- 84 m
Today on the water
10.9 °C
Observed at Gananoque, as of 2:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.3 m.
| Time | 3 a.m. | 6 a.m. | 9 a.m. | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 15 | W 15 | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 |
| Gusts | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.3 | ||||
| Temp. °C | 6 | 6 | 8 | 12 | 14 | 13 | 9 | 5 |
| Precip. % | 20 | 40 | 40 | 40 | 40 | 20 | 20 | 0 |
Tonight: Partly cloudy. 60 percent chance of showers this evening. Risk of a thunderstorm early this evening. Wind west 30 km/h gusting to 50 becoming light this evening. Low plus 5.
Weather: Gananoque (local forecast), as of 2:03 a.m. EDT
Sun and moon
- Civil dawn
- 6:42 a.m.
- Sunrise
- 7:12 a.m.
- Sunset
- 6:30 p.m.
- Civil dusk
- 6:59 p.m.
- Moonrise
- 6:03 a.m.
- Moonset
- 5:48 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
2 low risk
Kingston, as of 1:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
16% of Red Horse Lake 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 1959 records a maximum depth of 36.6 m, drawn from 22 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
- Lake TroutStocked
Stocking
Lake Trout60,773 fish in 10 years, most recently 2025
All stocking records (11)
| Year | Species | Fish | Stage |
|---|---|---|---|
| 2025 | Lake Trout | 14,199 | Fingerlings |
| 2025 | Lake Trout | 3,200 | Yearlings |
| 2024 | Lake Trout | 4,300 | Yearlings |
| 2023 | Lake Trout | 3,275 | Yearlings |
| 2022 | Lake Trout | 5,000 | Yearlings |
| 2021 | Lake Trout | 3,299 | Yearlings |
| 2020 | Lake Trout | 5,000 | Yearlings |
| 2019 | Lake Trout | 5,000 | Yearlings |
| 2018 | Lake Trout | 7,500 | Yearlings |
| 2017 | Lake Trout | 5,000 | Yearlings |
| 2016 | Lake Trout | 5,000 | Yearlings |
Eating your catch
The provincial guide to eating fish (2026) sets limits for 4 species from Red Horse Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Lake Trout | 50-55 cm | 12 | 4 | Mercury, PCB |
| Largemouth Bass | 35-40 cm | 4 | Do not eat | Mercury |
| Northern Pike | 55-60 cm | 8 | Do not eat | 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 18. Check seasons and limits before you fish.
Water
Clarity was measured with a Secchi disk in 21 years between 1996 and 2018; the latest annual mean is 4 m.
Getting on the water
1 listed boat launch. marks launches on the map.
- Boat launch
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.