Great Slave Lake fishing starts with the right water, not the right lure
Great Slave Lake is not one uniform fishing destination. Yellowknife Bay, the North Arm, Hay River, Resolution Bay and the East Arm can require different travel plans, fishing strategies and regulation checks.
Use this guide to choose an access hub, buy the correct licence, identify Area VI and park-permit boundaries, understand lake trout, pike, walleye and inconnu limits, and build a safer big-water trip.
Great Slave Lake is not Lesser Slave Lake
This page covers Great Slave Lake in Canada’s Northwest Territories. It does not cover Lesser Slave Lake near the Alberta community of Slave Lake.
What matters for a Great Slave Lake trip right now
Mosquito Creek area
Its May 1–June 30 all-species closure has ended. Normal post-closure rules now apply.
Yellowknife River reach
The reach between Prosperous Lake and Bluefish Lake closes September 1 through October 31.
2026–2027
Current NWT seasonal sport-fishing licences expire March 31, 2027.
Every sport angler
Barbless hooks remain mandatory throughout NWT sport fishing.
Answer these five questions before buying tackle
Yellowknife, Hay River, Resolution Bay or remote East Arm?
Lake trout, pike, walleye, inconnu, whitefish or tributary grayling?
Ordinary NWT water, Area VI or Thaıdene Nëné National Park Reserve?
Protected bay, short run or exposed open-lake crossing?
Wind, fuel, alternate shelter, communication and trip-plan contact.
One lake, four very different fishing bases
Schematic only—not a navigation chart or legal boundary map.
Pick the base that matches your fishing intent
| Base | Getting there | Best use | Access reality |
|---|---|---|---|
| Yellowknife | Road + commercial air | Guided day trips, Yellowknife Bay, North Arm, pike, trout and inconnu. | City recognizes the Old Town Boat Launch. Seasonal operations, trailer parking and local works should be checked before launching. |
| Hay River | Road + air | South-shore trip, Hay River walleye/pike and access into Great Slave Lake. | Porritt Landing on Vale Island is the Town’s boat-launch/recreation area. |
| Fort Resolution | Road | Resolution Bay, pike and walleye-focused south/east trips. | Special Little Buffalo River/Resolution Bay limits make exact position important. |
| Łutsel K’e / East Arm | No all-season road; air access, summer boat travel and winter over-ice travel. | Remote East Arm, trophy lake trout and lodge/fly-in fishing. | Area VI and Thaıdene Nëné National Park Reserve boundaries matter. |
Which fishing document do you actually need?
Use the applicable NWT Sport Fishing Licence or qualifying resident age exemption.
The NWT sport licence is not valid inside the National Park Reserve.
Currently $0, but still mandatory. Sign it and carry it while fishing.
2026–2027 NWT licence prices
| Class | Total incl. GST | Validity | Who it suits |
|---|---|---|---|
| NWT resident | $12.93 | Season | Valid NWT address for required residency period. |
| Canadian resident | $25.86 | Season | Canadian citizen/permanent resident with Canadian address. |
| Non-resident | $51.73 | Season | International visitor age 16+. |
| Canadian resident | $19.39 | 3 consecutive days | Short Canadian-resident trip. |
| Non-resident | $38.80 | 3 days | Short international trip. |
| Canadian resident | $12.93 | 1 day | Single-day trip. |
| Non-resident | $12.93 | 1 day | Single-day international visitor. |
Youth / senior exemption
Free youth and senior licence classes depend on having a valid NWT or Canadian address under GNWT’s residency definitions.
International youth
A non-resident age 16 or younger must be accompanied by someone holding a valid Sport Fishing Licence.
Carry it
Have the licence or required fishing permit available while fishing and when requested by an officer.
Thaıdene Nëné can change your licence without changing your lake
The National Park Reserve includes Great Slave Lake waters such as Wildbread Bay, Charlton Bay and portions of Christie and McLeod Bays.
Fee waived until further notice.
From the date issued to following March 31.
The species table you should save before losing signal
DCL = daily catch limit. PL = possession limit. Possession includes fish stored at your residence. Limits apply to individuals; group fishing is not permitted.
| Species / water | DCL | PL | Important restriction |
|---|---|---|---|
| Lake trout — Great Slave Lake + tributaries to 1 km upstream | 2 | 3 | Only one daily fish may originate from Area VI; only two in possession may originate from Area VI. Only one lake trout in possession anywhere on Great Slave Lake may exceed 70 cm fork length. |
| Northern pike — general Great Slave Lake + tributaries | 3 | 5 | Named river/management-area exceptions below override this. |
| Northern pike — Hay River | 1 | 2 | Included in Great Slave Lake and tributary totals. |
| Northern pike — Little Buffalo River + specified Resolution Bay | 1 | 2 | Included in Great Slave Lake and tributary totals. |
| Northern pike — Mackenzie River Management Area | 1 | 1 | Special management-area total applies. |
| Inconnu / coney — Great Slave + tributaries | 1 | 2 | No additional size restriction listed. |
| Lake whitefish | 5 | 10 | General NWT rule where no tighter water-specific rule applies. |
| Burbot | 5 | 10 | General NWT rule where no special restriction applies. |
| Arctic grayling — Mackenzie River Management Area | 1 | 1 | Minimum 36 cm fork length. |
| Arctic grayling — general NWT water | 3 | 5 | Baker Creek and management-area exceptions override this. |
Area VI is a source sublimit inside the Great Slave total
Great Slave Lake’s overall lake-trout limit is 2 daily / 3 possession, but only one daily may come from Area VI and no more than two in possession may come from Area VI.
Area VI boundary in regulation language
It lies east of the 112°30′00″W line from the north shore to Blanchette Island, then follows the defined Blanchette/Etthen Island line east to the mainland.
70 cm rule
Only one lake trout in your possession from all areas of Great Slave Lake may exceed 70 cm fork length.
Walleye is where “Great Slave Lake limit” becomes too vague
| Water | Apr. 1–Jun. 6 | Jun. 7–Mar. 31 | Key note |
|---|---|---|---|
| Great Slave / ordinary NWT water with no tighter exception | 1 DCL / 1 PL | 4 DCL / 7 PL | Check river/management-area exceptions before using this baseline. |
| Hay River + Mackenzie River Management Area | 1 / 1 | 2 / 3 | Includes Kakisa River and tributaries within the management-area definition. |
| Little Buffalo River + specified Resolution Bay water | 1 / 1 | 1 / 2 | Much tighter than ordinary post-June-6 NWT walleye limits. |
| Mosquito Creek + lake within 1 km of creek mouth | Closed May 1–June 30 | 3 DCL / 5 PL from July 1 | The seasonal closure is for all sport fishing, not only walleye. |
Three Great Slave-area closures worth putting in your phone
Baker Creek
All-species closure: April 15–June 15.
Baker Creek near Yellowknife and within 100 m of the mouth also has catch-and-release-only Arctic grayling rules outside the closed period.
Mosquito Creek
May 1–June 30.
Includes waters of Great Slave Lake within 1 km of the mouth.
Yellowknife River
September 1–October 31.
Applies to the reach between Prosperous Lake and Bluefish Lake.
NWT fishing rules that apply before species limits even matter
Mandatory for sport fishing.
One line or rod; remain with it.
Maximum two hooks.
Maximum two; remain within 50 m.
Live fish may not be used for bait.
Using or possessing a gaff while sport fishing is prohibited.
Intentionally snagging fish is prohibited.
Fishing with lights is prohibited.
Obstruction buffer
Fishing within 23 metres downstream of an obstruction, fishway or fish leap is prohibited.
Dip net
Maximum one-metre diameter and intended for ciscoes and suckers only; other fish caught must be immediately returned.
Keep your catch identifiable all the way home
Do not cut, pack or alter a fish subject to a length rule before legal measurement, except for immediate consumption.
Do not remove the skin so completely that species identification is lost.
Fillets must be separated before freezing; two fillets are regarded as one fish.
Outside your residence, stored/transported fish packages need the angler’s name and Sport Fishing Licence number on the outside.
Match habitat before changing lure colour
| Target | First water to inspect | Useful approach | Main mistake |
|---|---|---|---|
| Lake trout | Points, rock faces, humps, shoals and sharp deep-water transitions. | Jigging or controlled-depth trolling; follow bait depth. | Staying shallow in warm summer water simply because trout were there in June. |
| Northern pike | Protected bays, warmer shallows, weed edges and river-influenced water. | Spoons, jerkbaits, large flies and moving presentations. | Making a long open-water trout run when protected pike water offers a safer backup. |
| Walleye | River influence, current edges, points and south-basin structure. | Jigs, artificial baitfish presentations and controlled slow trolling. | Using a generic NWT limit in Hay River or Resolution Bay. |
| Inconnu | Current-influenced bays, river mouths and baitfish corridors. | Spoons, plugs and baitfish-profile presentations. | Forgetting Great Slave’s tight 1 daily / 2 possession limit. |
| Arctic grayling | Flowing tributaries rather than deep open lake. | Small flies, compact spoons and spinners. | Ignoring Baker Creek or Mackenzie Management Area exceptions. |
What changes through the Great Slave season
Spring transition
Access is the main variable. River-mouth closures and ice/open-water transitions can matter more than lure choice.
June–early July
Cooler water can keep trout shallower while pike use bays and river-influenced water.
July–August
Strong guided/fly-in period. Trout depth control and big-water wind planning become increasingly important.
September onward
Cooler conditions can improve shallow-water opportunities, but shorter days, colder water and fall closures require more conservative travel planning.
Check the marine zone you are actually fishing
Environment Canada issues Great Slave Lake marine forecasts by area. A calm forecast near one shore is not a reason to ignore the zone covering your run.
Particularly relevant to Yellowknife/North Arm travel.
Relevant to broad central/open-lake conditions.
Important for lodge, Łutsel K’e and remote East Arm routes.
Great Slave Lake is not forgiving of “the lifejacket is under the seat”
Transport Canada requires an appropriately sized approved flotation device onboard for each person.
Transport Canada specifically recommends considering thermal protection when boating in water below 15°C.
Leave route, destination, boat description and expected return time with someone.
Check before leaving town and again immediately before launch.
City ice measurements are not a lake-wide safety certificate
Test local ice
Drill/check where you actually travel rather than relying on a measurement from another bay.
Respect current
Yellowknife warns that flowing water under ice can produce very thin ice even during cold weather.
Leave a route plan
Record destination, travel route and expected return before leaving shore.
Why “legal limit” should not automatically mean “harvest the limit”
Fisheries and Oceans Canada’s April 2026 science advisory assessed Great Slave Lake lake trout using data through 2022.
2022 estimated biomass; above the limit reference point but below the proposed upper stock reference.
Also assessed in the Cautious Zone.
The report says Area VI was not assessed because available catch data were insufficient after its commercial-fishing closure.
Set up the photo before lifting the fish
Use tackle strong enough to avoid unnecessarily exhausting the fish.
GNWT recommends minimizing handling and keeping fish in the water when possible.
Do not squeeze the fish and avoid contact with gills and eyes.
Prepare ruler/camera before the fish leaves the water.
Choose the platform around the species—not the cheapest option
Shore / near-town
Useful for river-influenced opportunities and simple short sessions, but does not unlock most classic open-lake trout water.
Own boat
Makes sense for anglers experienced with cold, large inland water who have navigation, communication and conservative weather planning.
Guide / lodge
Most efficient for first-time anglers, remote East Arm trips and visitors targeting trophy trout without learning the lake by trial and error.
Six questions that reveal whether a fishing trip fits you
- “Which part of Great Slave Lake will we actually fish?” Yellowknife Bay, North Arm, East Arm and Resolution Bay are very different trips.
- “Does the route enter Area VI or Thaıdene Nëné?” This determines permit and lake-trout-rule checks.
- “Which licence or permit do I need before arrival?” Do not assume the outfitter’s licence covers the guest.
- “What happens if wind cancels the lake run?” Ask whether the operator has protected-water alternatives.
- “Is safety gear and rain/cold-weather gear provided?” Know what belongs in your suitcase.
- “Which species are realistic on my exact dates?” Avoid booking a species expectation that conflicts with seasonal patterns or closures.
What to bring for Great Slave Lake
Fishing
- Barbless-ready hooks or pliers to flatten barbs completely
- Strong lake-trout/pike tackle appropriate to targeted fish
- Long measuring board capable of accurately checking 70 cm+ trout
- Rubberized landing net
- Long pliers and hook cutters
- Artificial baitfish presentations for walleye—never live fish bait
Remote-water safety
- Properly fitted approved PFD/lifejacket for every person
- Insulating layers plus waterproof shell
- Offline navigation/chart backup
- Communication device appropriate to the route
- First-aid and cold-exposure supplies
- Extra food/water and conservative fuel reserve
A better Great Slave Lake morning
What saves time on a lake this large
The safest productive water can beat a famous spot requiring an exposed crossing.
Do not spend the best morning weather shopping for basic trip supplies.
Summer trout location often changes vertically before it changes geographically.
Protected pike water can save a fishing day when open-lake trout water becomes uncomfortable.
Do not rely on remembering a longitude/boundary description offshore.
Leaving before wind forces the decision is part of successful northern fishing.
Great Slave Lake regulation and planning mistakes
Two provinces/territories, two regulation systems.
Live fish bait is prohibited in NWT sport fishing.
Only one daily Great Slave trout may originate from Area VI.
Only one Great Slave lake trout in possession may exceed 70 cm FL.
Hay River is 1 daily / 2 possession.
The specified Little Buffalo/Resolution area is much tighter.
Thaıdene Nëné requires its Parks Canada permit.
Species must remain identifiable.
Fillets must be separated; two fillets count as one fish.
Use the Great Slave marine zone covering your route.
Local testing does not certify remote Great Slave ice.
DFO’s new trout assessment adds conservation context.
In-person licence vendors around the lake
Yellowknife
ECC Regional Office, Reddi-Mart downtown and Services TNO are on GNWT’s vendor list.
Hay River
ECC Regional Office and Home Hardware are listed.
Fort Resolution
ECC Regional Office and Northern Store are listed.
Łutsel K’e
The ECC Regional Office is listed as an in-person licence vendor.
Call before guessing
North Slave wildlife/enforcement and licence-related questions.
South Slave regional assistance.
Fisheries and Oceans Canada.
Fisheries questions in the South Slave area.
Park fishing permit/boundary questions.
Marine radio distress: Channel 16.
“I’m fishing [exact Great Slave location] on [date], targeting [species]. Can you confirm the daily limit, possession limit, current closure status and whether my route enters Area VI or another special management area?”
What was checked for this guide
Current licence year, limits, management areas and sport-fishing rules.
Great Slave trout, pike, inconnu, grayling and walleye exceptions.
Mosquito Creek, Yellowknife River, Baker Creek and Area VI definition.
Permit requirements, current fee waiver and Area VI overlap.
Newly published Great Slave Lake lake-trout stock assessment.
Boating/PFD guidance and Great Slave Lake marine-forecast framework.
Great Slave Lake fishing questions
Is Great Slave Lake the same as Lesser Slave Lake?
No. Great Slave Lake is in the Northwest Territories. Lesser Slave Lake is in Alberta and uses Alberta licences and fishing regulations.
What is the lake trout limit on Great Slave Lake?
The overall Great Slave Lake and covered tributary daily catch limit is two and the possession limit is three. Only one daily fish may originate from Area VI and no more than two in possession may originate from Area VI.
How many Great Slave Lake trout over 70 cm can I possess?
Only one lake trout in possession from all areas of Great Slave Lake may exceed 70 cm fork length.
Can I use live minnows on Great Slave Lake?
No. Using live fish for bait is prohibited under NWT sport-fishing rules.
Are barbless hooks required?
Yes. Barbless hooks are mandatory for sport fishing throughout the Northwest Territories.
What is the northern pike limit on Great Slave Lake?
The general Great Slave Lake limit is three daily and five in possession. Hay River is one daily/two possession, while other special management areas also have tighter limits.
What is the inconnu limit?
Great Slave Lake and its tributaries have a daily catch limit of one inconnu and a possession limit of two.
Do I need an NWT licence inside Thaıdene Nëné National Park Reserve?
An ordinary NWT Sport Fishing Licence is not valid for recreational fishing inside the National Park Reserve. A separate Parks Canada permit is required. Its fee is currently waived, but the signed permit must still be carried.
When does the Yellowknife River close to fishing?
The Yellowknife River reach between Prosperous Lake and Bluefish Lake is closed to sport fishing from September 1 through October 31.
Where should a first-time visitor fish from?
Yellowknife is usually the easiest logistical base for many first-time visitors. Hay River is practical for road-trip anglers and south-shore fishing, while remote East Arm trips are better matched to lodge or guided logistics.
Can I drive to Łutsel K’e?
There is no ordinary all-season road connection. Access is by air and, depending on season and conditions, by boat or winter over-ice travel.
Can I freeze Great Slave Lake fish before travelling home?
Yes, but NWT identification and transport rules still apply. Preserve species identification, do not illegally alter length-controlled fish, separate fillets before freezing and properly identify packaged fish when transporting or storing them outside your residence.
The best fishing plan is the one that still works when the wind changes
Pick the correct access hub, confirm the water-specific limit, carry the right licence or park permit, save the management boundary, wear cold-water flotation and keep enough weather margin for the return trip.
Regulation, access and safety review completed . Seasonal closures, marine warnings, access conditions and permit details can change.