Hartman Lake
49.7494° N, 92.4508° W
Depth contours from the government survey. Not for navigation.
Download the depth map (SVG)Hartman Lake, Ontario. 49.7494° N, 92.4508° W
Maximum depth 6.1 m. Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/hartman-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.
- Fisheries Management Zones, Ontario Ministry of Natural Resources. 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).
- Guide to Eating Ontario Fish: Advisory Database, Ontario Ministry of the Environment, Conservation and Parks. Contains information licensed under the Open Government Licence – Ontario.
Hartman Lake is 6.1 m deep at its deepest point, shallower than 86% of the 2,688 surveyed lakes in Ontario. It covers 5.18 km² and lies 5.6 km northeast of Dinorwic.
Government surveys have recorded 6 fish species here, including northern pike, walleye and yellow perch.
- Maximum depth
- 6.1 m
- shallower than 86% of the 2,688 surveyed lakes in Ontario
- Area
- 5.18 km²
- larger than 92% of the 18,731 lakes in Ontario
- Shoreline
- 11.6 km
- longer than 77% of the 18,731 lakes in Ontario
- Fish species
- 6
- more than 61% of the 2,454 surveyed lakes in Ontario
- Elevation
- 397 m
Today on the water
3.3 °C
Observed at Dryden, as of 4:00 a.m. CDT
choppy Estimated waves, next 12 hours: up to 0.2 m. Around 10 a.m., wind from the south: the south shore is sheltered, waves build toward the north shore.
| Time | 5 a.m. | 8 a.m. | 11 a.m. | 2 p.m. | 5 p.m. | 8 p.m. | 11 p.m. | 2 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | S 10 | S 10 | S 20 | SE 15 | SE 20 | SE 20 | SE 20 | SE 20 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | |||
| Temp. °C | 2 | 3 | 8 | 11 | 11 | 11 | 11 | 10 |
| Precip. % | 20 | 20 | 20 | 30 | 30 | 10 | 10 | 10 |
Tonight: Partly cloudy. Becoming clear this evening. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low plus 1.
Weather: Dryden (local forecast), as of 4:01 a.m. CDT
Sun and moon
- Civil dawn
- 6:50 a.m.
- Sunrise
- 7:22 a.m.
- Sunset
- 6:30 p.m.
- Civil dusk
- 7:03 p.m.
- Moonrise
- 6:15 a.m.
- Moonset
- 5:49 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
The government depth survey records a maximum depth of 6.1 m, drawn from 18 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 20 government surveys (2009–2009) that recorded them.
Forage fish and other species (3)
Forage fish
- Spottail Shiner 4
- Blacknose Shiner 3
Other
- White Sucker 15
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 3 species from Hartman Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Northern Pike | 55-60 cm | 12 | 4 | Mercury |
| Walleye | 40-45 cm | 16 | 8 | Mercury |
| White Sucker | 40-45 cm | 16 | 16 | 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 4. Check seasons and limits before you fish.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.