Holly Lake
49.4364° N, 90.0818° W
Depth contours from the 1982 government survey. Not for navigation.
Download the depth map (SVG)Holly Lake, Ontario. 49.4364° N, 90.0818° W
Maximum depth 10 m (1982 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/on/holly-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.
- Ontario Waterbody Location Identifier, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
Holly Lake is 10 m deep at its deepest point, shallower than 71% of the 2,688 surveyed lakes in Ontario. It covers 3.02 km² and lies 53 km north of Savanne.
Government surveys have recorded 8 fish species here, including walleye, yellow perch and northern pike.
- Maximum depth
- 10 msurveyed 1982
- shallower than 71% of the 2,688 surveyed lakes in Ontario
- Area
- 3.02 km²
- larger than 86% of the 18,731 lakes in Ontario
- Shoreline
- 17.5 km
- longer than 85% of the 18,731 lakes in Ontario
- Fish species
- 8
- more than 65% of the 2,454 surveyed lakes in Ontario
- Elevation
- 464 m
Today on the water
-2.1 °C
Observed at Upsala, as of 5:00 a.m. CDT
calm Estimated waves, next 12 hours: up to 0.1 m.
| Time | 6 a.m. | 9 a.m. | 12 p.m. | 3 p.m. | 6 p.m. | 9 p.m. | 12 a.m. | 3 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | var. 5 | var. 5 | var. 5 | SE 10 | SE 10 | SE 20 | SE 20 | SE 20 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |||
| Temp. °C | -2 | 4 | 11 | 14 | 13 | 10 | 8 | 8 |
| Precip. % | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Today: Clear. Becoming a mix of sun and cloud this morning. Wind up to 15 km/h. High 14. Wind chill minus 5 this morning. UV index 3 or moderate.
Weather: Upsala (local forecast), as of 5:03 a.m. CDT
Sun and moon
- Civil dawn
- 6:40 a.m.
- Sunrise
- 7:12 a.m.
- Sunset
- 6:21 p.m.
- Civil dusk
- 6:53 p.m.
- Moonrise
- 6:05 a.m.
- Moonset
- 5:40 p.m.
- Moon
- Waning crescent, 1% lit
Depth
The government depth survey from 1982 records a maximum depth of 10 m, drawn from 24 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 31 government surveys (2008–2013) that recorded them.
Forage fish and other species (3)
Forage fish
- Spottail Shiner 12
- Trout-Perch 3
Other
- White Sucker 26
Numbers are the surveys that recorded each species.
Eating your catch
The provincial guide to eating fish (2026) sets limits for 4 species from Holly Lake. Maximum meals per month:
| Species | Length | General population | Sensitive population* | Contaminant |
|---|---|---|---|---|
| Lake Whitefish | 35-40 cm | 16 | 16 | Precautionary |
| Northern Pike | 55-60 cm | 8 | 4 | Mercury |
| Walleye | 40-45 cm | 8 | 4 | 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 6. Check seasons and limits before you fish.