Ahmic Lake
45.6344° N, 79.6955° W
Depth contours from the 1971 government survey. Not for navigation.
Download the depth map (SVG)Ahmic Lake, Ontario. 45.6344° N, 79.6955° W
Maximum depth 24.4 m (1971 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/ahmic-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.
- Real-time hydrometric data, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
- National Water Data Archive (HYDAT) daily means, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
- 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.
- Ontario Waterbody Location Identifier, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
Ahmic Lake is 24.4 m deep at its deepest point, deeper than 70% of the 2,688 surveyed lakes in Ontario. It covers 16.6 km² and lies beside Ahmic Harbour.
Government surveys have recorded 21 fish species here, including rock bass, walleye and yellow perch.
- Maximum depth
- 24.4 msurveyed 1971
- deeper than 70% of the 2,688 surveyed lakes in Ontario
- Area
- 16.6 km²
- larger than 97% of the 18,731 lakes in Ontario
- Shoreline
- 74.3 km
- longer than 97% of the 18,731 lakes in Ontario
- Water clarity
- 2.4 mSecchi depth, 2025
- less clear than 77% of the 1,251 monitored lakes in Ontario
- Fish species
- 21
- more than 97% of the 2,454 surveyed lakes in Ontario
- Elevation
- 277 m
Today on the water
9.8 °C
Observed at Dunchurch, as of 3:00 a.m. EDT
choppy Estimated waves, next 12 hours: up to 0.4 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 | 0.2 | 0.2 | 0.2 | 0.4 | ||||
| Temp. °C | 4 | 5 | 8 | 12 | 14 | 10 | 5 | 3 |
| 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 west 30 km/h gusting to 50 becoming light this evening. Low plus 4.
Weather: Dunchurch (local forecast), as of 3:00 a.m. EDT
Water level
Ahmic Lake near Ahmic Harbour: 8.49 m at 2:00 a.m. EDT: at the median for this time of year, within the normal range.
Normal range (25th–75th percentile, HYDAT) Last 7 days
Provisional real-time data, subject to revision. hydrometric station 02EA019
Sun and moon
- Civil dawn
- 6:57 a.m.
- Sunrise
- 7:27 a.m.
- Sunset
- 6:43 p.m.
- Civil dusk
- 7:13 p.m.
- Moonrise
- 6:19 a.m.
- Moonset
- 6:02 p.m.
- Moon
- Waning crescent, 1% lit
Air Quality Health Index
2 low risk
Parry Sound, as of 2:00 a.m. EDT
Follow this lake by email: a weekly summary of conditions.
Depth
38% of Ahmic Lake 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 1971 records a maximum depth of 24.4 m, drawn from 42 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 45 government surveys (2010–2014) that recorded them.
Forage fish and other species (9)
Forage fish
- Trout-Perch 8
- Rainbow Smelt 4
- Emerald Shiner 3
- Brook Stickleback 1
- Central Mudminnow 1
- Golden Shiner 1
- Spoonhead Sculpin 1
Other
- White Sucker 26
- Brown Bullhead 8
Numbers are the surveys that recorded each species.
Stocking
Walleye1.7 million fish in 2 years, most recently 2024
All stocking records (2)
| Year | Species | Fish | Stage |
|---|---|---|---|
| 2024 | Walleye | 800,000 | Fry |
| 2023 | Walleye | 925,000 | Fry |
Eating your catch
The provincial guide to eating fish (2026) sets limits for 7 species from Ahmic Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Black Crappie | 20-25 cm | 16 | 4 | Mercury |
| Lake Whitefish | 45-50 cm | 16 | 8 | Mercury, PCB |
| 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 |
| Yellow Perch | 20-25 cm | 4 | Do not eat | Mercury |
| White Sucker | 40-45 cm | 8 | 4 | 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 15. Check seasons and limits before you fish.
Water
Clarity was measured with a Secchi disk in 31 years between 1993 and 2025; 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.
- Ahmic Lake - Hwy 124
Follow this lake
Every Friday by email: the Environment Canada forecast, the water level at the nearest gauge and any weather alerts in effect.