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26,934-acre Roebuck Bay. Southwest 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. Southwest trip-scale surveyed footprint within Roebuck Bay. Broome's macrotidal bay, including mangrove creeks, vast flats, channels and exposed entrance contours. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 55 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
Roebuck Bay - Southwest maps at 26,934 acres behind 29.7 miles of shoreline. At index 1.3 the outline is almost a bowl — read the depth changes, not the shoreline. Roughly 12% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 12.1 mi, about 6.1 mi across. If the bite dies, Roebuck Bay - Central is 27 mi to the northeast.
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. Fall barramundi concentrate at Sharp break, a good-rated drop-off around 24 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 (8 ft) | see map |
| Summer | 2 to 18 ft | dawn & dusk | Shoreline point (8 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Sharp break (24 ft) | see map |
| Winter | 11 to 35 ft | midday | Sharp break (24 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 14 to 55 ft. Sharp break is the standout, a drop-off at roughly 24 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 (8 ft) | see map |
| Summer | 8 to 35 ft | dawn & dusk | Shoreline point (8 ft) | see map |
| Fall | 8 to 55 ft | dawn & dusk | Sharp break (24 ft) | see map |
| Winter | 14 to 55 ft | midday | Sharp break (24 ft) | see map |
Spring black jewfish on Roebuck Bay - Southwest hold shallow, usually 8 to 35 ft. Depth-wise the year is flat: 8 to 35 ft in summer, 13 to 55 ft once it turns cold. The chart's best answer is Deepest basin — deep basin, 53 ft, prime 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 (8 ft) | see map |
| Summer | 8 to 35 ft | dawn & dusk | Shoreline point (8 ft) | see map |
| Fall | 7 to 55 ft | dawn & dusk | Deepest basin (53 ft) | see map |
| Winter | 13 to 55 ft | midday | Deepest basin (53 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. Fall king threadfin concentrate at Sharp break, a good-rated drop-off around 24 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 | Shoreline point (8 ft) | see map |
| Summer | 2 to 16 ft | dawn & dusk | Shoreline point (8 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Sharp break (24 ft) | see map |
| Winter | 10 to 35 ft | midday | Sharp break (24 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 24 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 (8 ft) | see map |
| Summer | 3 to 25 ft | dawn & dusk | Shoreline point (8 ft) | see map |
| Fall | 3 to 39 ft | dawn & dusk | Sharp break (24 ft) | see map |
| Winter | 15 to 55 ft | midday | Sharp break (24 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 12 to 55 ft. Spring giant trevally concentrate at Shoreline point, a prime-rated point around 8 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 (8 ft) | see map |
| Summer | 4 to 30 ft | dawn & dusk | Shoreline point (8 ft) | see map |
| Fall | 4 to 55 ft | dawn & dusk | Sharp break (24 ft) | see map |
| Winter | 12 to 55 ft | midday | Sharp break (24 ft) | see map |
Roebuck Bay - Southwest 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.
The chart marks 9 structure features on Roebuck Bay - Southwest; the deepest is Deepest basin at about 53 ft.
Access data: Western Australia Department of Transport Public Boat Ramps (DOT-033). Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Western Australia waters are set by the WA DPIRD (current recreational-fishing rules) — and special regulations can apply to Roebuck Bay - Southwest specifically, so confirm the current rules before you fish. Check WA DPIRD's live regional guide, licences, demersal-management measures, species limits, seasonal and spatial closures, marine parks, protected species and permitted gear before every trip. Species available to target can change by bioregion and date; a regional occurrence record is not an open-season signal. A directly measured contour, fishing spot or access lead never grants fishing, retention, port entry, parking or launching permission.
Check the official Western Australia fishing regulations →
WA DPIRD current recreational-fishing guides →
Check special-area and water-specific rules →
Roebuck Bay - Southwest is about 55 ft (17 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 Western Australia Department of Primary Industries and Regional Development regional evidence informs the barramundi, golden snapper, black jewfish, king threadfin, queenfish, giant trevally, mangrove jack, narrow-barred spanish mackerel, coral trout roster for Roebuck Bay - Southwest. 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 53 ft of water that rates prime for black jewfish in fall. Scroll up to the map for the complete spot list by 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 Roebuck Bay - Southwest is regulated by the WA DPIRD (current recreational-fishing rules). Check the official Western Australia regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Roebuck Bay - Central 27 mi · Lagrange Bay 27 mi · Roebuck Bay - North 34 mi · Desault Bay 52 mi · Carnot Bay 88 mi · King Sound - Sector 29 103 mi · King Sound - Sector 22 111 mi · King Sound - Sector 23 122 mi · King Sound - Sector 40 123 mi · King Sound - Sector 32 126 mi · King Sound - Sector 16 130 mi · King Sound - Sector 41 131 mi
See how Roebuck Bay - Southwest stacks up: best barramundi lakes in Western Australia · best golden snapper lakes in Western Australia · best black jewfish lakes in Western Australia · best king threadfin lakes in Western Australia
Browse all Western Australia 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.