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76,295-acre Cockburn Sound. Northeast 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. Northeast trip-scale surveyed footprint within Cockburn Sound. Perth's island-sheltered sound, with shipping channels, seagrass, reefs, jetties and measured port approaches. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 109 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.
On the chart, Cockburn Sound - Northeast draws 76,283 acres inside 58.6 miles of shoreline. The shoreline is moderately structured (index 1.5) — enough points and pockets to pattern. About 7% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 14.9 mi long by 11.5 mi wide at the broadest reach. For a second option, Cockburn Sound - West lies 6 mi 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 |
|---|---|---|
| mulloway (Mulloway) | official species listing | — |
| yellowtail kingfish (Yellowtail Kingfish) | official species listing | — |
| tailor (Tailor) | official species listing | — |
| silver trevally (Silver Trevally) | official species listing | — |
| gummy shark (Gummy Shark) | official species listing | — |
| King George whiting (King George Whiting) | official species listing | — |
Official species-evidence source.
In spring, mulloway run shallow here, mostly 5 to 30 ft. Midsummer fish sit out in 14 to 100 ft before dropping to 18 to 100 ft for winter. Summer mulloway concentrate at Deepest basin, a prime-rated deep basin around 103 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 | 5 to 30 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Summer | 14 to 100 ft | dawn & dusk | Deepest basin (103 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Winter | 18 to 100 ft | midday | Deepest basin (103 ft) | see map |
Start shallow in spring: yellowtail kingfish sit in 8 to 45 ft that time of year. Warm water sends them out to 17 to 109 ft; cold water stacks them in 23 to 109 ft. Top water on the chart: Shoreline point, a point in the 19 ft range, prime in spring. 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 45 ft | dawn & dusk | Shoreline point (19 ft) | see map |
| Summer | 17 to 109 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Fall | 8 to 91 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Winter | 23 to 109 ft | midday | Sharp break (54 ft) | see map |
Come spring, look for tailor tight to the bank in 3 to 25 ft. They move out to 11 to 65 ft in summer and finish the year down in 15 to 65 ft. If you only fish one area, make it Sharp break: a drop-off around 20 ft that scores prime in summer. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (19 ft) | see map |
| Summer | 11 to 65 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Fall | 3 to 46 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Winter | 15 to 65 ft | midday | Sharp break (20 ft) | see map |
Spring silver trevally on Cockburn Sound - Northeast hold shallow, usually 4 to 30 ft. They move out to 14 to 80 ft in summer and finish the year down in 18 to 80 ft. Put Sharp break first on the milk run — a drop-off near 20 ft that grades prime for summer. 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 (19 ft) | see map |
| Summer | 14 to 80 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Winter | 18 to 80 ft | midday | Sharp break (20 ft) | see map |
Spring gummy shark on Cockburn Sound - Northeast hold shallow, usually 8 to 40 ft. They move out to 16 to 109 ft in summer and finish the year down in 8 to 40 ft. Put Deepest basin first on the milk run — a deep basin near 103 ft that grades prime for summer. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 40 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Summer | 16 to 109 ft | dawn & dusk | Deepest basin (103 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Winter | 8 to 40 ft | dawn | Sharp break (20 ft) | see map |
The spring pattern is a shallow one: king george whiting in 3 to 18 ft. Midsummer fish sit out in 8 to 45 ft before dropping to 11 to 45 ft for winter. The spot to know is Sharp break, a drop-off in about 20 ft of water that rates good for king george whiting in summer. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 18 ft | dawn & dusk | Sharp break (9 ft) | see map |
| Summer | 8 to 45 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Fall | 3 to 31 ft | dawn & dusk | Sharp break (20 ft) | see map |
| Winter | 11 to 45 ft | midday | Sharp break (20 ft) | see map |
17 pieces of structure are mapped here — Deepest basin, around 103 ft, is the deepest of them.
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 Cockburn Sound - Northeast 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 →
Cockburn Sound - Northeast is about 109 ft (33 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 mulloway, yellowtail kingfish, tailor, silver trevally, gummy shark, king george whiting roster for Cockburn Sound - Northeast. 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.
Shoreline point is the top-rated area: a point in about 19 ft of water that rates prime for yellowtail kingfish in spring. Scroll up to the map for the complete spot list by species and season.
For mulloway, 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 Cockburn Sound - Northeast 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.
Cockburn Sound - West 6 mi · Cockburn Sound - Northwest 13 mi · Cockburn Sound - Central 13 mi · Yanchep Lagoon 41 mi · Geographe Bay - Sector 04 77 mi · Geographe Bay - Sector 03 79 mi · Geographe Bay - Sector 08 88 mi · Geographe Bay - Sector 07 94 mi · Geographe Bay - Sector 06 103 mi · Geographe Bay - Sector 05 103 mi · Geographe Bay - Sector 11 103 mi · Geographe Bay - Sector 10 105 mi
See how Cockburn Sound - Northeast stacks up: best mulloway lakes in Western Australia · best yellowtail kingfish lakes in Western Australia · best king george whiting lakes in Western Australia · best tailor 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.