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9,121-acre Cambridge Gulf. Sector 23 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 23 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 30 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here is how the season plays out for each species, straight from the data behind the map.
Traced from the shoreline, Cambridge Gulf - Sector 23 runs 9,120 acres with 33.3 miles of edge. An index of 2.5 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. End to end it runs roughly 12.6 mi, about 3.8 mi across. The nearest mapped water is Cambridge Gulf - Sector 24, 11 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.
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 9 to 30 ft. Start at Sharp break. It's a drop-off holding about 9 ft of water and rates good come fall. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 18 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Summer | 2 to 18 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Winter | 9 to 30 ft | midday | Sharp break (9 ft) | see map |
Come spring, look for golden snapper tight to the bank in 7 to 30 ft. Through summer count on 7 to 30 ft; the winter hold is 8 to 30 ft. If you only fish one area, make it Sharp break: a drop-off around 9 ft that scores good in fall. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 7 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Summer | 7 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Fall | 4 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Winter | 8 to 30 ft | midday | Sharp break (9 ft) | see map |
The spring pattern is a shallow one: black jewfish in 7 to 30 ft. The depth story barely changes: 7 to 30 ft through summer, 7 to 30 ft in winter. The spot to know is Sharp break, a drop-off in about 9 ft of water that rates good for black jewfish in fall. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 7 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Summer | 7 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Fall | 4 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Winter | 7 to 30 ft | midday | Sharp break (9 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 9 to 30 ft. Start at Shallow measured flat. It's a feeding flat holding about 6 ft of water and rates prime come spring. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 16 ft | dawn & dusk | Shallow measured flat (6 ft) | see map |
| Summer | 2 to 16 ft | dawn & dusk | Shallow measured flat (6 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Shallow measured flat (6 ft) | see map |
| Winter | 9 to 30 ft | midday | Sharp break (9 ft) | 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 8 to 30 ft. Fall queenfish concentrate at Sharp break, a prime-rated drop-off around 9 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (4 ft) | see map |
| Summer | 3 to 25 ft | dawn & dusk | Shoreline point (4 ft) | see map |
| Fall | 2 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Winter | 8 to 30 ft | midday | Sharp break (9 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 7 to 30 ft. Start at Shoreline point. It's a point holding about 4 ft of water and rates prime come spring. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (4 ft) | see map |
| Summer | 4 to 30 ft | dawn & dusk | Shoreline point (4 ft) | see map |
| Fall | 2 to 30 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Winter | 7 to 30 ft | midday | Sharp break (9 ft) | see map |
Cambridge Gulf - Sector 23 also holds mangrove jack (2 to 18 ft in summer), narrow-barred spanish mackerel (5 to 30 ft in summer), coral trout (7 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 12 structure marks on this chart. The deepest, Sharp break, sits near 9 ft.
No facility from the cited Western Australia Department of Transport Public Boat Ramps (DOT-033) 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://catalogue.data.wa.gov.au/dataset/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 Western Australia waters are set by the WA DPIRD (current recreational-fishing rules) — and special regulations can apply to Cambridge Gulf - Sector 23 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 23 is about 30 ft (9 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 23. 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 6 ft of water that rates prime for king threadfin in spring. 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 Cambridge Gulf - Sector 23 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 24 11 mi · Cambridge Gulf - Sector 34 37 mi · Cambridge Gulf - Sector 40 49 mi · Cambridge Gulf - Sector 39 52 mi · Anson Bay - Sector 09 132 mi, NT_AU · Anson Bay - Sector 05 140 mi, NT_AU · Anson Bay - Sector 10 143 mi, NT_AU · Anson Bay - Sector 06 148 mi, NT_AU · Vansittart Bay 158 mi · Anson Bay - Sector 02 159 mi, NT_AU · Fog Bay - West 172 mi, NT_AU · Fog Bay - Central 180 mi, NT_AU
See how Cambridge Gulf - Sector 23 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.