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53,574-acre Gulf St Vincent. Sector 19 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 19 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 117 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Species by species, here's what the data says the year looks like.
On the chart, Gulf St Vincent - Sector 19 draws 53,571 acres inside 41.6 miles of shoreline. Its 1.3 shoreline index means few bank features; the contours below do the pattern work. Roughly 2% of the water is 15 ft or less, the band where the food chain lives. The basin spans about 15.9 mi end to end and 5.4 mi across at its widest. Closest neighbour on DepthScout: Spencer Gulf - Sector 98, 12 mi west of here.
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.
Spring puts sand flathead in skinny water — 8 to 35 ft is the zone. Warm water sends them out to 16 to 80 ft; cold water stacks them in 8 to 35 ft. Sharp break is the standout, a drop-off at roughly 82 ft, rated good for summer sand flathead. Plan around early morning and the evening in the warm months.
| 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 (82 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | open water | see map |
| Winter | 8 to 35 ft | dawn | open water | see map |
Spring gummy shark on Gulf St Vincent - Sector 19 hold shallow, usually 8 to 40 ft. By summer they slide out to 18 to 117 ft, and by winter most fish are in 8 to 40 ft. The chart's best answer is Deepest basin — deep basin, 117 ft, prime for summer. Prime time lands in 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 117 ft | dawn & dusk | Deepest basin (117 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Sharp break (82 ft) | see map |
| Winter | 8 to 40 ft | dawn | open water | see map |
In spring, mulloway run shallow here, mostly 5 to 30 ft. Summer pushes them deeper, 14 to 100 ft, and winter fish settle into 18 to 100 ft. Sharp break is the standout, a drop-off at roughly 96 ft, rated good for summer mulloway. Time it for 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 (96 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | Sharp break (82 ft) | see map |
| Winter | 18 to 100 ft | midday | Sharp break (96 ft) | see map |
4 pieces of structure are mapped here — Deepest basin, around 117 ft, is the deepest of them.
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 19 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 19 is about 117 ft (36 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 19. 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 117 ft of water that rates prime for gummy shark in summer. Open the map above to see every rated spot for each 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 19 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.
Spencer Gulf - Sector 98 12 mi · Gulf St Vincent - Sector 15 15 mi · Gulf St Vincent - Sector 14 18 mi · Gulf St Vincent - Sector 22 19 mi · Spencer Gulf - Sector 105 22 mi · Spencer Gulf - Sector 84 26 mi · Spencer Gulf - Sector 97 26 mi · Spencer Gulf - Sector 90 29 mi · Gulf St Vincent - Sector 21 31 mi · Gulf St Vincent - Sector 10 31 mi · Gulf St Vincent - Sector 26 35 mi · Spencer Gulf - Sector 103 47 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.