Ramsey Lake
46.4825° N, 80.95° W
Depth contours from the 2005 government survey. Not for navigation.
Download the depth map (SVG)Ramsey Lake, Ontario. 46.4825° N, 80.95° W
Maximum depth 23 m (2005 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/ramsey-lake-near-grand-sudbury/, 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.
- 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.
- Photographs, Wikimedia Commons contributors. Each photo carries its own licence (CC0, public domain, CC BY or CC BY-SA), credited where shown.
Ramsey Lake is 23 m deep at its deepest point, deeper than 68% of the 2,688 surveyed lakes in Ontario. It covers 7.99 km² and lies beside Bell Grove.
Government surveys have recorded 2 fish species here: yellow perch and walleye.
- Maximum depth
- 23 msurveyed 2005
- deeper than 68% of the 2,688 surveyed lakes in Ontario
- Area
- 7.99 km²
- larger than 94% of the 18,731 lakes in Ontario
- Shoreline
- 29 km
- longer than 92% of the 18,731 lakes in Ontario
- Water clarity
- 2.9 mSecchi depth, 2018
- less clear than 66% of the 1,251 monitored lakes in Ontario
- Fish species
- 2
- fewer than 60% of the 2,454 surveyed lakes in Ontario
- Elevation
- 246 m
Today on the water
5.5 °C
Observed at Greater Sudbury, as of 6:00 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 | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. | 4 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | var. 5 | NW 15 | NW 20 | NW 20 | NW 20 | var. 5 | SE 10 | SE 10 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.2 | 0.2 | 0.2 | ||||
| Temp. °C | 5 | 7 | 10 | 11 | 8 | 6 | 3 | 1 |
| Precip. % | 30 | 30 | 30 | 20 | 0 | 0 | 0 | 0 |
Today: Cloudy with 30 percent chance of showers this morning and early this afternoon then a mix of sun and cloud. Wind becoming northwest 20 km/h gusting to 40 late this morning. High 11. UV index 3 or moderate.
Weather: Greater Sudbury (local forecast), as of 6:05 a.m. EDT
Sun and moon
- Civil dawn
- 7:02 a.m.
- Sunrise
- 7:33 a.m.
- Sunset
- 6:48 p.m.
- Civil dusk
- 7:18 p.m.
- Moonrise
- 6:25 a.m.
- Moonset
- 6:06 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
1 low risk
Sudbury, as of 4:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
14% of Ramsey Lake is shallower than 3 m, and 46% 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 2005 records a maximum depth of 23 m, drawn from 331 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 2 government surveys (2011–2011) that recorded them.
Stocking
Walleye255,755 fish in 6 years, most recently 2025
All stocking records (6)
| Year | Species | Fish | Stage |
|---|---|---|---|
| 2025 | Walleye | 56,497 | Fry |
| 2024 | Walleye | 52,125 | Fry |
| 2023 | Walleye | 18,939 | Fry |
| 2022 | Walleye | 49,600 | Fry |
| 2021 | Walleye | 31,721 | Fry |
| 2018 | Walleye | 46,873 | Fry |
Eating your catch
The provincial guide to eating fish (2026) sets limits for 9 species from Ramsey Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Northern Pike | 55-60 cm | 16 | 16 | PCB, Selenium |
| Rock Bass | 15-20 cm | 16 | 16 | PCB, Selenium |
| Smallmouth Bass | 35-40 cm | 12 | 12 | PCB |
| Splake | 50-55 cm | 1 | Do not eat | PCB |
| Walleye | 40-45 cm | 16 | 16 | PCB, Selenium |
| Yellow Perch | 20-25 cm | 8 | 8 | Selenium |
| Brown Bullhead | 25-30 cm | 16 | 16 | Mercury |
| Burbot (Ling) | 50-55 cm | 16 | 16 | Selenium |
| White Sucker | 40-45 cm | 12 | 12 | PCB, Selenium |
* 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 4 years between 2012 and 2018; the latest annual mean is 2.9 m.
Photos
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