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16,728-acre Cambridge Gulf. Sector 39 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. Sector 39 trip-scale surveyed footprint within Cambridge Gulf. A remote, highly tidal Kimberley gulf of estuary channels, mud banks, rocky narrows and Joseph Bonaparte Gulf approaches. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 90 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Below is the species-by-species picture, pulled from the same data the map uses.
Cambridge Gulf - Sector 39 maps at 16,728 acres behind 38.9 miles of shoreline. With a 2.1 development index there's bank structure worth casting at, in moderation. About 59% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Tip to tip the water measures near 14.5 mi with a 4.3-mi widest point. Cambridge Gulf - Sector 40 sits 3 mi northeast — the closest neighbouring chart.
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. Sharp break is the standout, a drop-off at roughly 10 ft, rated good for fall barramundi. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 18 ft | dawn & dusk | Sharp break (10 ft) | see map |
| Summer | 2 to 18 ft | dawn & dusk | Sharp break (10 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Sharp break (10 ft) | see map |
| Winter | 11 to 35 ft | midday | Sharp break (10 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. Fall golden snapper concentrate at Sharp break, a good-rated drop-off around 10 ft. Fish it in early morning and the evening and you'll meet the bite.
| 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 (10 ft) | see map |
| Winter | 21 to 80 ft | midday | Sharp break (37 ft) | see map |
Spring black jewfish on Cambridge Gulf - Sector 39 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. Put Deepest basin first on the milk run — a deep basin near 90 ft that grades prime for winter. The feeding windows run 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 (10 ft) | see map |
| Winter | 21 to 90 ft | midday | Deepest basin (90 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. Shallow measured flat is the standout, a feeding flat at roughly 4 ft, rated prime for spring king threadfin. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 16 ft | dawn & dusk | Shallow measured flat (4 ft) | see map |
| Summer | 2 to 16 ft | dawn & dusk | Shallow measured flat (4 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Shallow measured flat (4 ft) | see map |
| Winter | 10 to 35 ft | midday | Sharp break (10 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. If you only fish one area, make it Sharp break: a drop-off around 10 ft that scores prime in fall. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (5 ft) | see map |
| Summer | 3 to 25 ft | dawn & dusk | Shoreline point (5 ft) | see map |
| Fall | 3 to 39 ft | dawn & dusk | Sharp break (10 ft) | see map |
| Winter | 15 to 55 ft | midday | Sharp break (37 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. Shoreline point is the standout, a point at roughly 5 ft, rated prime for spring giant trevally. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (5 ft) | see map |
| Summer | 4 to 30 ft | dawn & dusk | Shoreline point (5 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (10 ft) | see map |
| Winter | 18 to 80 ft | midday | Sharp break (37 ft) | see map |
Cambridge Gulf - Sector 39 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 11 structure features on Cambridge Gulf - Sector 39; the deepest is Deepest basin at about 90 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 Cambridge Gulf - Sector 39 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 →
Cambridge Gulf - Sector 39 is about 90 ft (27 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 Cambridge Gulf - Sector 39. 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 90 ft of water that rates prime for black jewfish in winter. Every other rated spot, per species and season, is on the map above.
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 Cambridge Gulf - Sector 39 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.
Cambridge Gulf - Sector 40 3 mi · Cambridge Gulf - Sector 34 15 mi · Cambridge Gulf - Sector 23 52 mi · Cambridge Gulf - Sector 24 58 mi · Vansittart Bay 152 mi · Anson Bay - Sector 09 183 mi, NT_AU · Prince Frederick Harbour 190 mi · Anson Bay - Sector 05 192 mi, NT_AU · Anson Bay - Sector 10 194 mi, NT_AU · Anson Bay - Sector 06 199 mi, NT_AU · Anson Bay - Sector 02 211 mi, NT_AU · Hanover Bay 221 mi
See how Cambridge Gulf - Sector 39 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.