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76,289-acre Gulf St Vincent. Sector 30 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 30 trip-scale surveyed footprint within Gulf St Vincent. The Adelaide gulf from its northern flats through central channels to Kangaroo Island-facing entrances. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 226 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What follows comes from the same scoring engine that paints the spots above.
The outline encloses 76,286 acres, worked by 55.4 miles of shoreline. Nearly circular (index 1.4), so the story is the bottom, not the bank. Littoral water — the productive band under ~15 ft — makes up 2% of this chart. Tip to tip the water measures near 20.7 mi with a 10.8-mi widest point. Gulf St Vincent - Sector 29 sits 7 mi northwest — 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 |
|---|---|---|
| sand flathead (Sand Flathead) | official species listing | — |
| Australian salmon (Australian Salmon) | official species listing | — |
| silver trevally (Silver Trevally) | official species listing | — |
| gummy shark (Gummy Shark) | official species listing | — |
| yellowtail kingfish (Yellowtail Kingfish) | official species listing | — |
| mulloway (Mulloway) | official species listing | — |
Official species-evidence source.
When the water first warms, sand flathead slide up into 8 to 35 ft. Summer is a 16 to 80 ft game here, winter an 8 to 35 ft one. Start at Offshore hump. It's an offshore hump holding about 70 ft of water and rates good come summer. 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 | open water | see map |
| Summer | 16 to 80 ft | dawn & dusk | Offshore hump (70 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | Offshore hump (58 ft) | see map |
| Winter | 8 to 35 ft | dawn | open water | see map |
Start shallow in spring: australian salmon sit in 4 to 30 ft that time of year. Summer pushes them deeper, 14 to 80 ft, and winter fish settle into 4 to 30 ft. The spot to know is Offshore hump, an offshore hump in about 70 ft of water that rates good for australian salmon in summer. 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 | open water | see map |
| Summer | 14 to 80 ft | dawn & dusk | Offshore hump (70 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Offshore hump (58 ft) | see map |
| Winter | 4 to 30 ft | dawn | open water | see map |
Spring puts silver trevally in skinny water — 4 to 30 ft is the zone. Warm water sends them out to 14 to 80 ft; cold water stacks them in 18 to 80 ft. Offshore hump is the standout, an offshore hump at roughly 70 ft, rated good for summer silver 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 | open water | see map |
| Summer | 14 to 80 ft | dawn & dusk | Offshore hump (70 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Offshore hump (58 ft) | see map |
| Winter | 18 to 80 ft | midday | Offshore hump (70 ft) | see map |
Spring puts gummy shark in skinny water — 8 to 40 ft is the zone. Warm water sends them out to 18 to 120 ft; cold water stacks them in 8 to 40 ft. Sharp break is the standout, a drop-off at roughly 121 ft, rated prime for summer gummy shark. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 40 ft | dawn & dusk | Shoreline point (39 ft) | see map |
| Summer | 18 to 120 ft | dawn & dusk | Sharp break (121 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Offshore hump (70 ft) | see map |
| Winter | 8 to 40 ft | dawn | Shoreline point (39 ft) | see map |
Early season yellowtail kingfish use the shallows, holding in 8 to 45 ft. Expect a summer slide to 20 to 130 ft, then a winter hold in 27 to 130 ft. Put Shoreline point first on the milk run — a point near 39 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 45 ft | dawn & dusk | Shoreline point (39 ft) | see map |
| Summer | 20 to 130 ft | dawn & dusk | Sharp break (121 ft) | see map |
| Fall | 8 to 91 ft | dawn & dusk | Offshore hump (70 ft) | see map |
| Winter | 27 to 130 ft | midday | Sharp break (121 ft) | see map |
Early season mulloway use the shallows, holding in 5 to 30 ft. Summer is a 14 to 100 ft game here, winter an 18 to 100 ft one. The chart's best answer is Sharp break — drop-off, 121 ft, good for summer. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 30 ft | dawn & dusk | open water | see map |
| Summer | 14 to 100 ft | dawn & dusk | Sharp break (121 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | Offshore hump (70 ft) | see map |
| Winter | 18 to 100 ft | midday | Sharp break (121 ft) | see map |
Structure-wise the chart holds 13 features, led in depth by Deepest basin at roughly 213 ft.
No facility from the cited South Australian boat ramps and marine facilities 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://www.sa.gov.au/topics/boating-and-marine/boat-ramps-and-marine-facilities
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for South Australia waters are set by the PIRSA (current recreational species limits) — and special regulations can apply to Gulf St Vincent - Sector 30 specifically, so confirm the current rules before you fish. Check PIRSA's live species lookup, closures and SA Fishing app before every trip. Snapper remains absent from these page rosters because the current management closure prohibits targeting and catch-and-release in the affected South Australian waters through the stated closure period. Verify all size, boat and possession limits, protected areas, gear controls and local access directions. A contour, spot or access lead never grants fishing, retention, entry, parking or launching permission.
Check the official South Australia fishing regulations →
PIRSA SA Fishing app and live rules →
Check special-area and water-specific rules →
Gulf St Vincent - Sector 30 is about 226 ft (69 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 Primary Industries and Regions South Australia regional evidence informs the sand flathead, australian salmon, silver trevally, gummy shark, yellowtail kingfish, mulloway roster for Gulf St Vincent - Sector 30. 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 39 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 sand flathead, 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 Gulf St Vincent - Sector 30 is regulated by the PIRSA (current recreational species limits). Check the official South Australia regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Gulf St Vincent - Sector 29 7 mi · Gulf St Vincent - Sector 26 17 mi · Spencer Gulf - Sector 105 31 mi · Gulf St Vincent - Sector 22 34 mi · Gulf St Vincent - Sector 21 36 mi · Spencer Gulf - Sector 103 41 mi · Spencer Gulf - Sector 97 42 mi · Spencer Gulf - Sector 98 45 mi · Spencer Gulf - Sector 102 47 mi · Gulf St Vincent - Sector 19 51 mi · Spencer Gulf - Sector 90 65 mi · Gulf St Vincent - Sector 14 66 mi
Browse all South 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.