Black Lake
44.7765° N, 76.7204° W
Depth contours from the 1972 government survey. Not for navigation.
Download the depth map (SVG)Black Lake, Ontario. 44.7765° N, 76.7204° W
Maximum depth 18.3 m (1972 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/black-lake-near-westport/, 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.
Black Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 0.42 km² and lies 4.5 km south of Oso.
Government surveys have recorded 13 fish species here, including northern pike, walleye and smallmouth bass.
- Maximum depth
- 18.3 msurveyed 1972
- deeper than 54% of the 2,688 surveyed lakes in Ontario
- Area
- 0.42 km²
- smaller than 55% of the 18,731 lakes in Ontario
- Shoreline
- 3.6 km
- shorter than 66% of the 18,731 lakes in Ontario
- Fish species
- 13
- more than 84% of the 2,454 surveyed lakes in Ontario
- Elevation
- 199 m
Today on the water
7.5 °C
Observed at Sharbot Lake, as of 3:00 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 | 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 | W 15 | NW 30 | NW 30 | NW 15 | var. 5 | var. 5 |
| Gusts km/h | 50 | 50 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.2 | ||||
| Temp. °C | 3 | 5 | 9 | 12 | 14 | 10 | 5 | 2 |
| 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 3.
Weather: Sharbot Lake (local forecast), as of 3:03 a.m. EDT
Sun and moon
- Civil dawn
- 6:45 a.m.
- Sunrise
- 7:14 a.m.
- Sunset
- 6:32 p.m.
- Civil dusk
- 7:01 p.m.
- Moonrise
- 6:06 a.m.
- Moonset
- 5:51 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
2 low risk
Kingston, as of 2:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
18% of Black Lake is shallower than 3 m, and 57% is deeper than 10 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 1972 records a maximum depth of 18.3 m, drawn from 9 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 8 government surveys (2011–2014) that recorded them.
Forage fish and other species (3)
Forage fish
- Bluntnose Minnow 1
Other
- Brown Bullhead 4
- White Sucker 4
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 5 species from Black Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Black Crappie | 20-25 cm | 16 | 16 | Precautionary |
| Northern Pike | 55-60 cm | 12 | 4 | Mercury |
| Smallmouth Bass | 35-40 cm | 4 | Do not eat | Mercury |
| Walleye | 40-45 cm | 12 | 4 | Mercury |
| Cisco (Lake Herring) | 35-40 cm | 16 | 12 | Precautionary |
* 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.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.