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17,242-acre Spencer Gulf. Sector 41 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 41 trip-scale surveyed footprint within Spencer Gulf. Australia's long western gulf, divided from upper tidal flats through major bays and channels to its offshore-facing mouth. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 73 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here's the year, species by species, as the scoring engine sees it.
Drawn out, this is 17,240 acres of water rimmed by 50 miles of bank. The 2.7 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. Littoral water — the productive band under ~15 ft — makes up 69% of this chart. Call it 11.8 mi long by 5.5 mi wide at the broadest reach. The nearest mapped water is Spencer Gulf - Sector 42, 4 mi to the east.
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 |
|---|---|---|
| King George whiting (King George Whiting) | official species listing | — |
| sand flathead (Sand Flathead) | official species listing | — |
| black bream (Black Bream) | 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.
Start shallow in spring: king george whiting sit in 3 to 18 ft that time of year. Warm water sends them out to 8 to 45 ft; cold water stacks them in 11 to 45 ft. Top water on the chart: Shallow measured flat, a feeding flat in the 4 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 18 ft | dawn & dusk | Shallow measured flat (4 ft) | see map |
| Summer | 8 to 45 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Fall | 3 to 31 ft | dawn & dusk | Sharp break (6 ft) | see map |
| Winter | 11 to 45 ft | midday | Sharp break (12 ft) | see map |
In spring, sand flathead run shallow here, mostly 8 to 35 ft. Summer pushes them deeper, 15 to 73 ft, and winter fish settle into 8 to 35 ft. Shallow measured flat is the standout, a feeding flat at roughly 6 ft, rated good for spring sand flathead. Time it for early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dawn & dusk | Shallow measured flat (6 ft) | see map |
| Summer | 15 to 73 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Winter | 8 to 35 ft | dawn | Shallow measured flat (6 ft) | see map |
Early season black bream use the shallows, holding in 2 to 16 ft. Summer is a 7 to 35 ft game here, winter a 2 to 16 ft one. The chart's best answer is Sharp break — drop-off, 12 ft, good for summer. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 16 ft | dawn & dusk | Sharp break (6 ft) | see map |
| Summer | 7 to 35 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Sharp break (6 ft) | see map |
| Winter | 2 to 16 ft | dawn | Sharp break (6 ft) | see map |
Come spring, look for australian salmon tight to the bank in 4 to 30 ft. Expect a summer slide to 13 to 73 ft, then a winter hold in 4 to 30 ft. Start at Sharp break. It's a drop-off holding about 6 ft of water and rates prime come fall. Prime time lands in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (4 ft) | see map |
| Summer | 13 to 73 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (6 ft) | see map |
| Winter | 4 to 30 ft | dawn | Shoreline point (4 ft) | see map |
Early season silver trevally use the shallows, holding in 4 to 30 ft. Summer is a 13 to 73 ft game here, winter a 16 to 73 ft one. The chart's best answer is Sharp break — drop-off, 6 ft, prime for fall. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (4 ft) | see map |
| Summer | 13 to 73 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (6 ft) | see map |
| Winter | 16 to 73 ft | midday | Sharp break (12 ft) | see map |
Early season gummy shark use the shallows, holding in 8 to 40 ft. Summer is an 11 to 73 ft game here, winter an 8 to 40 ft one. The chart's best answer is Sharp break — drop-off, 12 ft, prime for summer. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 40 ft | dawn & dusk | Shallow measured flat (6 ft) | see map |
| Summer | 11 to 73 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Fall | 7 to 73 ft | dawn & dusk | Sharp break (12 ft) | see map |
| Winter | 8 to 40 ft | dawn | Shallow measured flat (6 ft) | see map |
Spencer Gulf - Sector 41 also holds yellowtail kingfish (11 to 73 ft in summer), mulloway (10 to 73 ft in summer). Pick any of them on the map above for rated spots and bait picks.
The chart marks 8 structure features on Spencer Gulf - Sector 41; the deepest is Sharp break at about 12 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 Spencer Gulf - Sector 41 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 →
Spencer Gulf - Sector 41 is about 73 ft (22 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 king george whiting, sand flathead, black bream, australian salmon, silver trevally, gummy shark, yellowtail kingfish, mulloway roster for Spencer Gulf - Sector 41. 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.
Shallow measured flat is the top-rated area: a feeding flat in about 4 ft of water that rates prime for king george whiting in spring. Every other rated spot, per species and season, is on the map above.
For king george whiting, 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 Spencer Gulf - Sector 41 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 42 4 mi · Spencer Gulf - Sector 34 12 mi · Spencer Gulf - Sector 33 19 mi · Spencer Gulf - Sector 40 22 mi · Spencer Gulf - Sector 27 30 mi · Spencer Gulf - Sector 53 58 mi · Spencer Gulf - Sector 61 61 mi · Spencer Gulf - Sector 52 64 mi · Spencer Gulf - Sector 60 64 mi · Spencer Gulf - Sector 59 74 mi · Spencer Gulf - Sector 66 86 mi · Spencer Gulf - Sector 65 96 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.