Salt water depth chart
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77,522-acre Perkins Bay. Northwest 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. Northwest trip-scale surveyed footprint within Perkins Bay. A broad northwest Tasmanian bay around Stanley and Smithton, with sand banks, channels and Bass Strait exchange. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 106 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, Perkins Bay - Northwest draws 77,493 acres inside 69.7 miles of shoreline. The shoreline is moderately structured (index 1.8) — enough points and pockets to pattern. Roughly 15% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 14 mi, about 12.8 mi across. The nearest mapped water is Perkins Bay - North, 11 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 |
|---|---|---|
| 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 | — |
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. Feeding flat is the standout, a feeding flat at roughly 21 ft, rated prime for spring 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 | Feeding flat (21 ft) | see map |
| Summer | 16 to 80 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Winter | 8 to 35 ft | dawn | Feeding flat (21 ft) | see map |
Spring black bream on Perkins Bay - Northwest hold shallow, usually 2 to 16 ft. By summer they slide out to 7 to 35 ft, and by winter most fish are in 2 to 16 ft. The chart's best answer is Sharp break — drop-off, 16 ft, good for summer. Prime time lands in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 16 ft | dawn & dusk | Sharp break (16 ft) | see map |
| Summer | 7 to 35 ft | dawn & dusk | Sharp break (16 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Sharp break (16 ft) | see map |
| Winter | 2 to 16 ft | dawn | Sharp break (16 ft) | see map |
When the water first warms, australian salmon slide up into 4 to 30 ft. Summer is a 14 to 80 ft game here, winter a 4 to 30 ft one. Start at Sharp break. It's a drop-off holding about 40 ft of water and rates prime come summer. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (18 ft) | see map |
| Summer | 14 to 80 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Winter | 4 to 30 ft | dawn | Shoreline point (18 ft) | see map |
Spring silver trevally on Perkins Bay - Northwest hold shallow, usually 4 to 30 ft. By summer they slide out to 14 to 80 ft, and by winter most fish are in 18 to 80 ft. The chart's best answer is Sharp break — drop-off, 40 ft, prime for summer. 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 (18 ft) | see map |
| Summer | 14 to 80 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Winter | 18 to 80 ft | midday | Sharp break (40 ft) | see map |
Spring gummy shark on Perkins Bay - Northwest hold shallow, usually 8 to 40 ft. By summer they slide out to 16 to 106 ft, and by winter most fish are in 8 to 40 ft. The chart's best answer is Deepest basin — deep basin, 104 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 | Feeding flat (21 ft) | see map |
| Summer | 16 to 106 ft | dawn & dusk | Deepest basin (104 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Winter | 8 to 40 ft | dawn | Feeding flat (21 ft) | see map |
Start shallow in spring: yellowtail kingfish sit in 8 to 45 ft that time of year. Summer pushes them deeper, 16 to 106 ft, and winter fish settle into 22 to 106 ft. The spot to know is Shoreline point, a point in about 18 ft of water that rates prime for yellowtail kingfish in spring. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 45 ft | dawn & dusk | Shoreline point (18 ft) | see map |
| Summer | 16 to 106 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Fall | 8 to 91 ft | dawn & dusk | Sharp break (40 ft) | see map |
| Winter | 22 to 106 ft | midday | Sharp break (40 ft) | see map |
16 pieces of structure are mapped here — Deepest basin, around 104 ft, is the deepest of them.
No facility from the cited Marine and Safety Tasmania boating 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://mast.tas.gov.au/recreational/boating-facilities/
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for Tasmania waters are set by the Fishing Tasmania (current recreational sea-fishing rules) — and special regulations can apply to Perkins Bay - Northwest specifically, so confirm the current rules before you fish. Check Fishing Tasmania's live sea-fishing rules and licensing pages before every trip. Current species limits, licences for particular fisheries, seasonal and area closures, marine reserves, protected species, gear controls and biosecurity measures may apply. A directly measured depth footprint, fishing-spot marker or access lead is planning context only and never grants permission to fish, keep catch, enter private or port land, park or launch.
Check the official Tasmania fishing regulations →
Fishing Tasmania species and licence information →
Check special-area and water-specific rules →
Perkins Bay - Northwest is about 106 ft (32 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 Tasmania Department of Natural Resources and Environment regional evidence informs the sand flathead, black bream, australian salmon, silver trevally, gummy shark, yellowtail kingfish roster for Perkins Bay - Northwest. 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.
Feeding flat is the top-rated area: a feeding flat in about 21 ft of water that rates prime for sand flathead in spring. 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 Perkins Bay - Northwest is regulated by the Fishing Tasmania (current recreational sea-fishing rules). Check the official Tasmania regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Perkins Bay - North 11 mi · East Telegraph Bay 13 mi · Perkins Bay - West 16 mi · Cave Bay 28 mi · Emu Bay 53 mi · Pilots Bay 95 mi · Macquarie Harbour - West 109 mi · St Albans Bay 119 mi · Corner Inlet - West 135 mi, VIC · Corner Inlet - Central 141 mi, VIC · Ringarooma Bay 144 mi · Western Port - Southeast 144 mi, VIC
Browse all Tasmania 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.