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71,878-acre Gulf St Vincent. Sector 26 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 26 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 149 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The season-by-season read for each species follows, from the map's own numbers.
Drawn out, this is 71,880 acres of water rimmed by 47.2 miles of bank. Nearly circular (index 1.3), so the story is the bottom, not the bank. Littoral water — the productive band under ~15 ft — makes up 1% of this chart. Tip to tip the water measures near 18.3 mi with a 7.6-mi widest point. The nearest mapped water is Spencer Gulf - Sector 105, 14 mi to the north.
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.
In spring, sand flathead run shallow here, mostly 8 to 35 ft. Midsummer fish sit out in 16 to 80 ft before dropping to 8 to 35 ft for winter. 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 35 ft | dawn & dusk | open water | see map |
| Summer | 16 to 80 ft | dawn & dusk | open water | see map |
| Fall | 8 to 56 ft | dawn & dusk | open water | see map |
| Winter | 8 to 35 ft | dawn | open water | see map |
Early season gummy shark use the shallows, holding in 8 to 40 ft. Expect a summer slide to 18 to 120 ft, then a winter hold in 8 to 40 ft. Put Sharp break first on the milk run — a drop-off near 116 ft that grades prime 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 40 ft | dawn & dusk | open water | see map |
| Summer | 18 to 120 ft | dawn & dusk | Sharp break (116 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Sharp break (116 ft) | see map |
| Winter | 8 to 40 ft | dawn | open water | see map |
Spring puts mulloway in skinny water — 5 to 30 ft is the zone. As the season builds they drop to 14 to 100 ft, wintering in 18 to 100 ft. Summer mulloway concentrate at Sharp break, a good-rated drop-off around 116 ft. Warm-month bites cluster around 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 (116 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | open water | see map |
| Winter | 18 to 100 ft | midday | Sharp break (116 ft) | see map |
Structure-wise the chart holds 5 features, led in depth by Deepest basin at roughly 146 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 26 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 26 is about 149 ft (45 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 26. 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 116 ft of water that rates prime for gummy shark in summer. 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 26 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 14 mi · Gulf St Vincent - Sector 29 15 mi · Gulf St Vincent - Sector 22 17 mi · Gulf St Vincent - Sector 30 17 mi · Gulf St Vincent - Sector 21 21 mi · Spencer Gulf - Sector 97 26 mi · Spencer Gulf - Sector 98 28 mi · Spencer Gulf - Sector 103 31 mi · Gulf St Vincent - Sector 19 35 mi · Spencer Gulf - Sector 102 39 mi · Spencer Gulf - Sector 90 47 mi · Gulf St Vincent - Sector 14 49 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.