Agnew Lake
46.3653° N, 81.7546° W
Depth contours from the 1975 government survey. Not for navigation.
Download the depth map (SVG)Agnew Lake, Ontario. 46.3653° N, 81.7546° W
Maximum depth 36.6 m (1975 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/agnew-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.
- 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.
Agnew Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 30.1 km² and lies 5.5 km west of Nairn Centre.
Government surveys have recorded 20 fish species here, including yellow perch, rock bass and walleye.
- Maximum depth
- 36.6 msurveyed 1975
- deeper than 85% of the 2,688 surveyed lakes in Ontario
- Area
- 30.1 km²
- larger than 98% of the 18,731 lakes in Ontario
- Shoreline
- 198 km
- longer than 99% of the 18,731 lakes in Ontario
- Water clarity
- 2.4 mSecchi depth, 2024
- less clear than 78% of the 1,251 monitored lakes in Ontario
- Fish species
- 20
- more than 96% of the 2,454 surveyed lakes in Ontario
- Elevation
- 259 m
Today on the water
3.6 °C
Observed at Sudbury (Greater), as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 8 a.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 10 | W 10 | NW 20 | NW 20 | NW 20 | NW 10 | var. 5 | SE 10 |
| Gusts km/h | 40 | 40 | ||||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | ||||
| Temp. °C | 5 | 4 | 7 | 10 | 12 | 10 | 7 | 5 |
| Precip. % | 30 | 30 | 30 | 20 | 20 | 0 | 0 | 0 |
Tonight: Mainly cloudy with 30 percent chance of showers. Wind west 20 km/h gusting to 40 becoming light this evening. Low plus 4.
Weather: Sudbury (Greater) (local forecast), as of 3:02 a.m. EDT
Sun and moon
- Civil dawn
- 7:06 a.m.
- Sunrise
- 7:36 a.m.
- Sunset
- 6:51 p.m.
- Civil dusk
- 7:21 p.m.
- Moonrise
- 6:28 a.m.
- Moonset
- 6:10 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Sudbury, as of 2:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
17% of Agnew 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 1975 records a maximum depth of 36.6 m, drawn from 94 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 36 government surveys (2010–2014) that recorded them.
Forage fish and other species (11)
Forage fish
- Blacknose Shiner 3
- Trout-Perch 2
- Brook Stickleback 1
- Central Mudminnow 1
- Common Shiner 1
- Emerald Shiner 1
- Golden Shiner 1
- Logperch 1
Other
- White Sucker 6
- Brown Bullhead 2
- Longnose Sucker 2
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 3 species from Agnew Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Northern Pike | 55-60 cm | 4 | Do not eat | Mercury |
| Smallmouth Bass | 35-40 cm | 4 | 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 10. Check seasons and limits before you fish.
Water
Clarity was measured with a Secchi disk in 3 years between 2006 and 2024; the latest annual mean is 2.4 m.
Getting on the water
1 listed boat launch; 1 with parking listed. marks launches on the map.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.