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100,106-acre Gulf St Vincent. Sector 22 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 22 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 143 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.
On the chart, Gulf St Vincent - Sector 22 draws 100,103 acres inside 79.4 miles of shoreline. The shoreline is moderately structured (index 1.8) — enough points and pockets to pattern. About 1% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 18.8 mi long by 15.4 mi wide at the broadest reach. Closest neighbour on DepthScout: Spencer Gulf - Sector 105, 3 mi south 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 84 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 (84 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 22 hold shallow, usually 8 to 40 ft. By summer they slide out to 18 to 120 ft, and by winter most fish are in 8 to 40 ft. The chart's best answer is Sharp break — drop-off, 84 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 120 ft | dawn & dusk | Sharp break (84 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Sharp break (84 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 84 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 (84 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | Sharp break (84 ft) | see map |
| Winter | 18 to 100 ft | midday | Sharp break (84 ft) | see map |
The chart marks 4 structure features on Gulf St Vincent - Sector 22; the deepest is Sharp break at about 127 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 22 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 22 is about 143 ft (44 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 22. 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.
Sharp break is the top-rated area: a drop-off in about 84 ft of water that rates prime for gummy shark in summer. The interactive chart above rates every 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 22 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 105 3 mi · Spencer Gulf - Sector 98 11 mi · Spencer Gulf - Sector 97 15 mi · Gulf St Vincent - Sector 21 16 mi · Gulf St Vincent - Sector 26 17 mi · Gulf St Vincent - Sector 19 19 mi · Gulf St Vincent - Sector 29 31 mi · Spencer Gulf - Sector 103 31 mi · Gulf St Vincent - Sector 14 32 mi · Spencer Gulf - Sector 90 32 mi · Gulf St Vincent - Sector 15 33 mi · Gulf St Vincent - Sector 30 34 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.