Salt water depth chart
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37,081-acre Port Darwin. Central 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. Central trip-scale surveyed footprint within Port Darwin. Darwin Harbour's arms, flats, reefs, wrecks and deep tide-scoured channels, divided around operational trip areas. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 79 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The rest of this page walks each species through its year, using the map's own scoring.
Drawn out, this is 37,079 acres of water rimmed by 67.5 miles of bank. A development index of 2.5 means a maze of bays and points: far more casting targets than a round bowl of the same size. The shallow band under 15 ft claims about 44% of the surface — that's where the groceries are. Call it 14.4 mi long by 10.2 mi wide at the broadest reach. For a second option, Bynoe Harbour - East lies 5 mi west.
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.
When the water first warms, barramundi slide up into 2 to 18 ft. There's no big seasonal slide here — summer means 2 to 18 ft, winter 11 to 35 ft. If you only fish one area, make it Shoreline point: a point around 15 ft that scores good in spring. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 18 ft | dawn & dusk | Shoreline point (15 ft) | see map |
| Summer | 2 to 18 ft | dawn & dusk | Shoreline point (15 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | open water | see map |
| Winter | 11 to 35 ft | midday | open water | see map |
Come spring, look for golden snapper tight to the bank in 8 to 35 ft. Through summer count on 8 to 35 ft; the winter hold is 21 to 79 ft. Start at Sharp break. It's a drop-off holding about 52 ft of water and rates good come 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 (20 ft) | see map |
| Summer | 8 to 35 ft | dawn & dusk | Shoreline point (20 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | Sharp break (52 ft) | see map |
| Winter | 21 to 79 ft | midday | Sharp break (64 ft) | see map |
The spring pattern is a shallow one: black jewfish in 8 to 35 ft. The depth story barely changes: 8 to 35 ft through summer, 18 to 79 ft in winter. Top water on the chart: Deepest basin, a deep basin in the 78 ft range, prime in winter. 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 (20 ft) | see map |
| Summer | 8 to 35 ft | dawn & dusk | Shoreline point (20 ft) | see map |
| Fall | 8 to 63 ft | dawn & dusk | Sharp break (60 ft) | see map |
| Winter | 18 to 79 ft | midday | Deepest basin (78 ft) | see map |
When the water first warms, king threadfin slide up into 2 to 16 ft. There's no big seasonal slide here — summer means 2 to 16 ft, winter 10 to 35 ft. If you only fish one area, make it Shallow measured flat: a feeding flat around 5 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 16 ft | dawn & dusk | Shallow measured flat (5 ft) | see map |
| Summer | 2 to 16 ft | dawn & dusk | Shallow measured flat (5 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Shallow measured flat (5 ft) | see map |
| Winter | 10 to 35 ft | midday | open water | see map |
Spring puts queenfish in skinny water — 3 to 25 ft is the zone. Summer fish stay in 3 to 25 ft, and winter fish hold in 15 to 55 ft. Sharp break is the standout, a drop-off at roughly 52 ft, rated prime for winter queenfish. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (20 ft) | see map |
| Summer | 3 to 25 ft | dawn & dusk | Shoreline point (20 ft) | see map |
| Fall | 3 to 39 ft | dawn & dusk | Shallow measured flat (5 ft) | see map |
| Winter | 15 to 55 ft | midday | Sharp break (52 ft) | see map |
When the water first warms, giant trevally slide up into 4 to 30 ft. There's no big seasonal slide here — summer means 4 to 30 ft, winter 18 to 79 ft. If you only fish one area, make it Shoreline point: a point around 20 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (20 ft) | see map |
| Summer | 4 to 30 ft | dawn & dusk | Shoreline point (20 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (52 ft) | see map |
| Winter | 18 to 79 ft | midday | Sharp break (64 ft) | see map |
Port Darwin - Central 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.
Count 20 structure marks on this chart. The deepest, Deepest basin, sits near 78 ft.
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 Port Darwin - Central 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 →
Port Darwin - Central is about 79 ft (24 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 Port Darwin - Central. 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.
Deepest basin is the top-rated area: a deep basin in about 78 ft of water that rates prime for black jewfish in winter. Open the map above to see every rated spot for each 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 Port Darwin - Central 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.
Bynoe Harbour - East 5 mi · Port Darwin - West 12 mi · Bynoe Harbour - Northeast 14 mi · Port Darwin - North 14 mi · Port Darwin - Northwest 18 mi · Van Diemen Gulf - Sector 50 18 mi · Bynoe Harbour - North 24 mi · Fog Bay - Northeast 25 mi · Van Diemen Gulf - Sector 43 32 mi · Bynoe Harbour - West 32 mi · Bynoe Harbour - Northwest 33 mi · Fog Bay - North 39 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.