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Southwest Lake

Walleye opens Sat, May 16it lies 36 km northwest of Casummit Lake, and the nearest road is 34 miles off — this is fly-in water.

800 acSurface area324 ha
40 ftMax depth12.2 m
11 ftMean depth3.4 m
Cool-waterWater type
FMZ 4Fishing zone
Casummit LakeNearest town36 km NW
11 miShoreline17 km
34 miNearest roadfly-in territory
None on fileDepth map

Southwest Lake is the 603rd-largest of 1,629 named lakes in Ontario Far North, with 11 miles of charted shoreline and 4 islands. Its 40 ft maximum depth is greater than 41% of depth-surveyed lakes in the region.

MNRF aquatic resource surveys

Fish species

Also present: Blacknose Shiner, Burbot, Cisco, Emerald Shiner, Johnny Darter x Tesselated Darter, Logperch, Mimic Shiner, Ninespine Stickleback, Northern Pearl Dace, Spottail Shiner, Trout-Perch, White Sucker

On this water

Lodges & operators 0

No lodge is based on Southwest Lake itself. These are the closest that are — each on its own water, with the straight-line distance from here.

  • lodgefly-inamerican · housekeeping40 mi away

    Home water: Latreille Lake

    Remote fly-in fishing and hunting lodge on Latreille Lake, about 80 air miles northeast of Vermilion Bay and reachable only by float plane from Clark's Cedar Lake base. American Plan main lodge with ten double rooms plus a private eight-person cabin, and two self-catered outpost camps on the adjoining Margaret and Allison lakes; walleye and northern pike over roughly 300 miles of shoreline, with spring and fall bear and moose hunts.

  • Owl's Nest LodgeListed — not yet verified
    40 mi away

    Home water: Trout Lake

    owlsnestlodge.ca · 705-857-2565

  • resortdrive-tohousekeeping40 mi away

    Home water: Trout Lake

    Pleasure Point Cottages rents nine self-contained housekeeping cottages on a four-acre point with about 1,100 feet of frontage on Trout Lake near Barry's Bay, Ontario, on a chain of four connected lakes. Cottages 1 through 7 are lakefront and 8 and 9 are lake-view; each has a 3- or 4-piece bathroom, kitchen appliances, satellite TV, propane BBQ and fire pit, and guests supply their own bedding and towels. There is an on-site boat launch and docking with free canoes, kayaks and pedal boats, but no boat rentals; Algonquin Park is about a 30-minute drive west.

  • lodgefly-inhousekeeping40 mi away

    Home water: Trout Lake

    Booi's Fly-in Lodge is an island lodge on Trout Lake, about 20 minutes by floatplane north of Red Lake, Ontario, reachable only by air. Guests fish walleye, northern pike and lake trout from 18-foot boats with 25 hp outboards, and stay in log-and-pine chalet cottages of two to six bedrooms with full kitchens. The base plan is light housekeeping with cottage attendant service; meals are ordered a la carte in the main lodge, and the package includes complimentary guided shore lunches three mornings a week and a steak night.

2026 regulations

Seasons & limitsFMZ 4

Open season
Walleyeopens Sat, May 16
Northern PikeOpen all year
Yellow PerchOpen all year
Lake WhitefishOpen all year

Ice-out here is typically mid May (modeled from regional ice records).

SpeciesSeasonSport licenceConservation
Lake WhitefishOpen all yearS - 12C - 6
Northern PikeOpen all yearS - 4, none between 70 - 90 cm (27.6 - 35.4 in.), not more than 1 greater than 90 cm (35.4 in.)C - 2, none between 70 - 90 cm (27.6 - 35.4 in.), not more than 1 greater than 90 cm (35.4 in.)
Walleye and Sauger or any combinationJan. 1 - Apr. 14 & 3rd Sat. in May - Dec. 31S - 4, not more than 1 greater than 46 cm (18.1 in.)C - 2, not more than 1 greater than 46 cm (18.1 in.)
Yellow PerchOpen all yearS - 50C - 25

Compiled from MNRF Recreational Fishing Regulations open data (2026 season, zone-wide rules shown for this lake's species). Regulations change by variation order — confirm with the official FMZ 4 summary before you fish.

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