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92,809-acre Bynoe Harbour. North Australian saltwater fishing map showing only directly measured AusBathyTopo 2026 cells, source-qualified fishing spots, official regional fish evidence, seasonal forage context, access guidance and current-rule links. North trip-scale surveyed footprint within Bynoe Harbour. A mangrove-lined harbour southwest of Darwin with branching creeks, reefs and strong tidal channels. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 117 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The season-by-season read for each species follows, from the map's own numbers.
Bynoe Harbour - North maps at 92,804 acres behind 61.5 miles of shoreline. The basin is a simple one (shoreline index 1.4) — close to a bowl, so the structure on the chart matters more than the bank. Roughly 11% of the water is 15 ft or less, the band where the food chain lives. Tip to tip the water measures near 18.2 mi with a 12.7-mi widest point. If the bite dies, Port Darwin - Northwest is 10 mi to the east.
Regional occurrence does not mean equal abundance, child-specific catch rate, retention permission or a promised catch. Live state, territory, Commonwealth, protected-area and local rules always control. The roster may combine exact-water monitoring with habitat-filtered official regional evidence; it does not imply that every species is equally abundant throughout the mapped section.
| Species | Evidence basis | Count / date |
|---|---|---|
| barramundi (Barramundi) | official species listing | — |
| golden snapper (Golden Snapper) | official species listing | — |
| black jewfish (Black Jewfish) | official species listing | — |
| king threadfin (King Threadfin) | official species listing | — |
| queenfish (Queenfish) | official species listing | — |
| giant trevally (Giant Trevally) | official species listing | — |
| mangrove jack (Mangrove Jack) | official species listing | — |
| Spanish mackerel (Narrow-barred Spanish Mackerel) | official species listing | — |
| coral trout (Coral Trout) | official species listing | — |
Official species-evidence source.
Spring puts barramundi in skinny water — 2 to 18 ft is the zone. Summer fish stay in 2 to 18 ft, and winter fish hold in 11 to 35 ft. Winter barramundi concentrate at Sharp break, a good-rated drop-off around 39 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 18 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Summer | 2 to 18 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Offshore hump (23 ft) | see map |
| Winter | 11 to 35 ft | midday | Sharp break (39 ft) | see map |
In spring, golden snapper run shallow here, mostly 8 to 35 ft. Summer keeps them at 8 to 35 ft, and they winter in 21 to 80 ft. Sharp break is the standout, a drop-off at roughly 55 ft, rated good for fall golden snapper. Time it for early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Summer | 8 to 35 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | Sharp break (55 ft) | see map |
| Winter | 21 to 80 ft | midday | Sharp break (70 ft) | see map |
Spring black jewfish on Bynoe Harbour - North hold shallow, usually 8 to 35 ft. Depth-wise the year is flat: 8 to 35 ft in summer, 21 to 90 ft once it turns cold. The chart's best answer is Sharp break — drop-off, 55 ft, good for fall. Prime time lands in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Summer | 8 to 35 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Fall | 8 to 63 ft | dawn & dusk | Sharp break (55 ft) | see map |
| Winter | 21 to 90 ft | midday | Sharp break (70 ft) | see map |
Spring puts king threadfin in skinny water — 2 to 16 ft is the zone. Summer fish stay in 2 to 16 ft, and winter fish hold in 10 to 35 ft. Spring king threadfin concentrate at Shallow measured flat, a prime-rated feeding flat around 8 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 16 ft | dawn & dusk | Shallow measured flat (8 ft) | see map |
| Summer | 2 to 16 ft | dawn & dusk | Shallow measured flat (8 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Shallow measured flat (8 ft) | see map |
| Winter | 10 to 35 ft | midday | Sharp break (39 ft) | see map |
When the water first warms, queenfish slide up into 3 to 25 ft. There's no big seasonal slide here — summer means 3 to 25 ft, winter 15 to 55 ft. Start at Sharp break. It's a drop-off holding about 39 ft of water and rates prime come fall. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Summer | 3 to 25 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Fall | 3 to 39 ft | dawn & dusk | Sharp break (39 ft) | see map |
| Winter | 15 to 55 ft | midday | Sharp break (55 ft) | see map |
Spring puts giant trevally in skinny water — 4 to 30 ft is the zone. Summer fish stay in 4 to 30 ft, and winter fish hold in 18 to 80 ft. Spring giant trevally concentrate at Shoreline point, a prime-rated point around 7 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Summer | 4 to 30 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (55 ft) | see map |
| Winter | 18 to 80 ft | midday | Sharp break (70 ft) | see map |
Bynoe Harbour - North also holds mangrove jack (2 to 18 ft in summer), narrow-barred spanish mackerel (8 to 45 ft in summer), coral trout (8 to 35 ft in summer). Pick any of them on the map above for rated spots and bait picks.
20 pieces of structure are mapped here — Deepest basin, around 117 ft, is the deepest of them.
No facility from the cited Northern Territory boat ramps source was spatially attached within 3 km of this directly measured map footprint during the 2026-09-08 audit. This is an evidence gap, not a claim that public access is absent. Check the official portal, live site signs, tides, ramp condition, vessel suitability, fees, parking, working-port restrictions and landowner permissions before travel: https://nt.gov.au/marine/for-all-harbour-and-boat-users/boat-ramps
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for Northern Territory waters are set by the Northern Territory Government (current recreational-fishing rules) — and special regulations can apply to Bynoe Harbour - North specifically, so confirm the current rules before you fish. Check the Northern Territory's live possession and size limits and rules for specific areas before every trip. Seasonal barramundi controls, protected species, marine-park and Aboriginal land or sea-country permissions, method limits, vessel rules and local closures can apply. Remote-water access often needs separate landowner or permit approval. A mapped survey footprint, fishing spot or access lead never grants fishing, retention, entry, parking, camping or launching permission.
Check the official Northern Territory fishing regulations →
Northern Territory possession and size limits →
Check special-area and water-specific rules →
Bynoe Harbour - North is about 117 ft (36 m) deep at its deepest point. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Official coastal monitoring from Northern Territory Department of Agriculture and Fisheries regional evidence informs the barramundi, golden snapper, black jewfish, king threadfin, queenfish, giant trevally, mangrove jack, narrow-barred spanish mackerel, coral trout roster for Bynoe Harbour - North. The mixed roster combines exact-water records where available with habitat-filtered regional evidence; not every species is documented at this exact water, and it is not a promise of equal abundance or a catch on a particular trip.
Shallow measured flat is the top-rated area: a feeding flat in about 8 ft of water that rates prime for king threadfin in spring. The map above holds the full rated-spot list for every species and season.
For barramundi, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Bynoe Harbour - North is regulated by the Northern Territory Government (current recreational-fishing rules). Check the official Northern Territory regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Port Darwin - Northwest 10 mi · Bynoe Harbour - Northwest 11 mi · Bynoe Harbour - Northeast 13 mi · Fog Bay - Northeast 14 mi · Bynoe Harbour - West 19 mi · Port Darwin - West 19 mi · Bynoe Harbour - East 19 mi · Port Darwin - North 20 mi · Fog Bay - North 23 mi · Port Darwin - Central 24 mi · Van Diemen Gulf - Sector 50 28 mi · Fog Bay - Central 35 mi
Browse all Northern Territory fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.