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Map of Miniss Lake with depth contours

Miniss Lake

50.8213° N, 90.8733° W

Depth contours from the government survey. Not for navigation.

Download the depth map (SVG)

Miniss Lake, Ontario. 50.8213° N, 90.8733° W

Maximum depth 36.6 m. Scale bar on the map.

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/miniss-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.

Miniss Lake is 36.6 m deep at its deepest point, deeper than 85% of the 2,688 surveyed lakes in Ontario. It covers 70 km² and lies 42 km southwest of Rat Rapids.

Government surveys have recorded 14 fish species here, including walleye, cisco and lake whitefish.

Maximum depth
36.6 m
deeper than 85% of the 2,688 surveyed lakes in Ontario
Area
70 km²
larger than 99% of the 18,731 lakes in Ontario
Shoreline
398 km
longer than 99% of the 18,731 lakes in Ontario
Fish species
14
more than 89% of the 2,454 surveyed lakes in Ontario
Elevation
377 m

Today on the water

-1.2 °C

ClearWind calmfeels like -3 °C

Observed at Savant Lake, as of 2:00 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.

Time3 a.m.6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.
Wind km/hvar. 5var. 5S 10S 20S 20SE 10SE 20SE 20
Gusts km/h40
Waves (est.) m0.10.10.10.2
Temp. °C005101111107
Precip. %2020202040404040

Tonight: Mainly cloudy. 30 percent chance of showers early this evening. Clearing near midnight. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low minus 1.

Weather: Savant Lake (local forecast), as of 2:07 a.m. CDT

Sun and moon

Civil dawn
6:44 a.m.
Sunrise
7:16 a.m.
Sunset
6:23 p.m.
Civil dusk
6:56 p.m.
Moonrise
6:09 a.m.
Moonset
5:42 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

34% of Miniss Lake is shallower than 3 m, and 3% 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 36.6 m, drawn from 539 depth contours.

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 Depths are from government surveys and may be outdated.

Fish

Sport fish by the share of the 46 government surveys (2009–2009) that recorded them.

  • Walleye36 of 46
  • Cisco22 of 46
  • Lake Whitefish11 of 46
  • Sauger11 of 46
  • Northern Pike10 of 46
  • Burbot8 of 46
  • Yellow Perch8 of 46
  • Rock Bass4 of 46
Forage fish and other species (6)

Forage fish

  • Spottail Shiner 5
  • Trout-Perch 3
  • Emerald Shiner 2
  • Logperch 1

Other

  • White Sucker 15
  • Shorthead Redhorse 1

Numbers are the surveys that recorded each species.

Eating your catch

The provincial guide to eating fish (2026) sets limits for 6 species from Miniss Lake. Maximum meals per month:

SpeciesLengthGeneral populationSensitive population*Contaminant
Lake Whitefish45-50 cm1616Precautionary
Northern Pike55-60 cm4Do not eatMercury
Walleye40-45 cm4Do not eatMercury
Burbot (Ling)50-55 cm8Do not eatMercury
Redhorse Sucker50-55 cm84Mercury
White Sucker40-45 cm1612Mercury

* 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.