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16,153-acre Gulf St Vincent. Sector 29 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 29 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 124 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.
The drawn water covers 16,151 acres wrapped in 28.5 miles of bank. With a 1.6 development index there's bank structure worth casting at, in moderation. 5% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. End to end it runs roughly 12.5 mi, about 3.6 mi across. If the bite dies, Gulf St Vincent - Sector 30 is 7 mi to the southeast.
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 | — |
| gummy shark (Gummy Shark) | official species listing | — |
| mulloway (Mulloway) | official species listing | — |
Official species-evidence source.
Early season sand flathead use the shallows, holding in 8 to 35 ft. Expect a summer slide to 16 to 80 ft, then a winter hold in 8 to 35 ft. Put Sharp break first on the milk run — a drop-off near 73 ft that grades good for summer. In summer the feeding windows fall in 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 | Sharp break (73 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | open water | see map |
| Winter | 8 to 35 ft | dawn | open water | see map |
Start shallow in spring: gummy shark sit in 8 to 40 ft that time of year. Summer pushes them deeper, 18 to 120 ft, and winter fish settle into 8 to 40 ft. The spot to know is Deepest basin, a deep basin in about 119 ft of water that rates prime for gummy shark in summer. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 40 ft | dawn & dusk | open water | see map |
| Summer | 18 to 120 ft | dawn & dusk | Deepest basin (119 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Sharp break (73 ft) | see map |
| Winter | 8 to 40 ft | dawn | open water | see map |
When the water first warms, mulloway slide up into 5 to 30 ft. By summer they slide out to 14 to 100 ft, and by winter most fish are in 18 to 100 ft. If you only fish one area, make it Sharp break: a drop-off around 73 ft that scores good in summer. In summer the feeding windows fall in 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 (73 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | Sharp break (73 ft) | see map |
| Winter | 18 to 100 ft | midday | Sharp break (73 ft) | see map |
Gulf St Vincent - Sector 29 carries 4 mapped structure features, topping out (or rather bottoming out) at Deepest basin, about 119 ft down.
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 29 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 29 is about 124 ft (38 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, gummy shark, mulloway roster for Gulf St Vincent - Sector 29. 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 119 ft of water that rates prime for gummy shark in summer. The map above holds the full rated-spot list for every 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 29 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 30 7 mi · Gulf St Vincent - Sector 26 15 mi · Spencer Gulf - Sector 105 28 mi · Gulf St Vincent - Sector 21 31 mi · Gulf St Vincent - Sector 22 31 mi · Spencer Gulf - Sector 103 34 mi · Spencer Gulf - Sector 97 37 mi · Spencer Gulf - Sector 102 40 mi · Spencer Gulf - Sector 98 42 mi · Gulf St Vincent - Sector 19 50 mi · Spencer Gulf - Sector 90 60 mi · Gulf St Vincent - Sector 14 63 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.