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Map of Upper Medicine Stone Lake with depth contours

Upper Medicine Stone Lake

50.8956° N, 94.0597° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Upper Medicine Stone Lake, Ontario. 50.8956° N, 94.0597° W

Maximum depth 39.6 m. Scale bar on the map.

Not for navigation. Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/upper-medicine-stone-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.

Upper Medicine Stone Lake is 39.6 m deep at its deepest point, deeper than 88% of the 2,688 surveyed lakes in Ontario. It covers 10.8 km² and lies 7.5 km southwest of Madsen.

Government surveys have recorded 13 fish species here, including walleye, lake whitefish and burbot.

Maximum depth
39.6 m
deeper than 88% of the 2,688 surveyed lakes in Ontario
Area
10.8 km²
larger than 95% of the 18,731 lakes in Ontario
Shoreline
42.5 km
longer than 95% of the 18,731 lakes in Ontario
Fish species
13
more than 84% of the 2,454 surveyed lakes in Ontario
Elevation
378 m

Today on the water

1.2 °C

ClearWind SE 5 km/h

Observed at Red Lake, as of 3:00 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.

Time4 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/hS 10S 10S 20SE 20SE 20SE 20SE 20SE 20
Gusts km/h4040404040
Waves (est.) m0.10.10.20.20.2
Temp. °C31710101098
Precip. %2020206060601010

Tonight: Partly cloudy. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low plus 1.

Weather: Red Lake (local forecast), as of 3:01 a.m. CDT

Sun and moon

Civil dawn
6:56 a.m.
Sunrise
7:29 a.m.
Sunset
6:36 p.m.
Civil dusk
7:09 p.m.
Moonrise
6:22 a.m.
Moonset
5:55 p.m.
Moon
Waning crescent, 1% lit

Data Source: Environment and Climate Change Canada. Local times.

How waves are estimated

Significant wave height from the forecast hourly wind and the open-water distance (fetch) upwind, using the SMB method (US Army Corps of Engineers Shore Protection Manual, 1984), rounded up to the next 0.1 m. It is not a measurement: gusts, leftover swell and shoals can make water rougher. Under 0.2 m: calm; 0.2–0.5 m: choppy; over 0.5 m: rough.

Depth

17% of Upper Medicine Stone Lake is shallower than 3 m, and 35% 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 records a maximum depth of 39.6 m, drawn from 59 depth contours.

Not for navigation. Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 26 government surveys (2009–2009) that recorded them.

  • Walleye19 of 26
  • Lake Whitefish9 of 26
  • Burbot7 of 26
  • Yellow Perch7 of 26
  • Northern Pike6 of 26
  • Lake Trout5 of 26
  • Cisco2 of 26
  • Rock Bass2 of 26
Forage fish and other species (5)

Forage fish

  • Spottail Shiner 5
  • Trout-Perch 4
  • Common Shiner 2
  • Emerald Shiner 1

Other

  • White Sucker 8

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 5 species from Upper Medicine Stone Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Lake Trout50-55 cm84Mercury, Arsenic
Lake Whitefish45-50 cm164Mercury
Northern Pike55-60 cm4Do not eatMercury
Walleye40-45 cm4Do not eatMercury
Burbot (Ling)50-55 cm4Do not eatMercury

* 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.