Salt water depth chart
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96,281-acre Horseyard Bay 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. Trip-scale surveyed footprint within Horseyard Bay. An official Australian bay evaluated inside a compact 24-kilometre trip-planning window centred on the Composite Gazetteer feature. The public outline is limited to retained direct AusBathyTopo survey cells, not a legal or navigational boundary. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 180 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
On the chart, Horseyard Bay draws 96,274 acres inside 68.2 miles of shoreline, with a single island in the mix. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. About 11% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Tip to tip the water measures near 20.4 mi with a 15.2-mi widest point. The nearest mapped water is Pelsaert Lagoon, 33 mi to the southeast.
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 |
|---|---|---|
| mulloway (Mulloway) | official species listing | — |
| yellowtail kingfish (Yellowtail Kingfish) | official species listing | — |
| tailor (Tailor) | official species listing | — |
| silver trevally (Silver Trevally) | official species listing | — |
| gummy shark (Gummy Shark) | official species listing | — |
| King George whiting (King George Whiting) | official species listing | — |
Official species-evidence source.
In spring, mulloway run shallow here, mostly 5 to 30 ft. Midsummer fish sit out in 14 to 100 ft before dropping to 18 to 100 ft for winter. Summer mulloway concentrate at Sharp break, a good-rated drop-off around 22 ft. Fish it in early morning and the evening and you'll meet the bite.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 30 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Summer | 14 to 100 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Winter | 18 to 100 ft | midday | Sharp break (22 ft) | see map |
Start shallow in spring: yellowtail kingfish sit in 8 to 45 ft that time of year. Warm water sends them out to 20 to 130 ft; cold water stacks them in 27 to 130 ft. Top water on the chart: Shoreline point, a point in the 31 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 | 8 to 45 ft | dawn & dusk | Shoreline point (31 ft) | see map |
| Summer | 20 to 130 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Fall | 8 to 91 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Winter | 27 to 130 ft | midday | Sharp break (129 ft) | see map |
Come spring, look for tailor tight to the bank in 3 to 25 ft. They move out to 11 to 65 ft in summer and finish the year down in 15 to 65 ft. If you only fish one area, make it Sharp break: a drop-off around 22 ft that scores prime in summer. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shallow measured flat (5 ft) | see map |
| Summer | 11 to 65 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Fall | 3 to 46 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Winter | 15 to 65 ft | midday | Sharp break (22 ft) | see map |
Spring silver trevally on Horseyard Bay hold shallow, usually 4 to 30 ft. They move out to 14 to 80 ft in summer and finish the year down in 18 to 80 ft. Put Sharp break first on the milk run — a drop-off near 22 ft that grades prime for 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 (31 ft) | see map |
| Summer | 14 to 80 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Winter | 18 to 80 ft | midday | Sharp break (22 ft) | see map |
Spring gummy shark on Horseyard Bay hold shallow, usually 8 to 40 ft. They move out to 18 to 120 ft in summer and finish the year down in 8 to 40 ft. Put Sharp break first on the milk run — a drop-off near 22 ft that grades prime for summer. The feeding windows run 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 | 18 to 120 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Winter | 8 to 40 ft | dawn | Shallow measured flat (6 ft) | see map |
The spring pattern is a shallow one: king george whiting in 3 to 18 ft. Midsummer fish sit out in 8 to 45 ft before dropping to 11 to 45 ft for winter. The spot to know is Shallow measured flat, a feeding flat in about 5 ft of water that rates prime for king george whiting in spring. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 18 ft | dawn & dusk | Shallow measured flat (5 ft) | see map |
| Summer | 8 to 45 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Fall | 3 to 31 ft | dawn & dusk | Sharp break (22 ft) | see map |
| Winter | 11 to 45 ft | midday | Sharp break (22 ft) | see map |
The chart marks 24 structure features on Horseyard Bay; the deepest is Deepest basin at about 180 ft.
No facility from the cited Western Australia Department of Transport Public Boat Ramps (DOT-033) 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://catalogue.data.wa.gov.au/dataset/boat-ramps
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for Western Australia waters are set by the WA DPIRD (current recreational-fishing rules) — and special regulations can apply to Horseyard Bay specifically, so confirm the current rules before you fish. Check WA DPIRD's live regional guide, licences, demersal-management measures, species limits, seasonal and spatial closures, marine parks, protected species and permitted gear before every trip. Species available to target can change by bioregion and date; a regional occurrence record is not an open-season signal. A directly measured contour, fishing spot or access lead never grants fishing, retention, port entry, parking or launching permission.
Check the official Western Australia fishing regulations →
WA DPIRD current recreational-fishing guides →
Check special-area and water-specific rules →
Horseyard Bay is about 180 ft (55 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 Western Australia Department of Primary Industries and Regional Development regional evidence informs the mulloway, yellowtail kingfish, tailor, silver trevally, gummy shark, king george whiting roster for Horseyard Bay. 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.
Shoreline point is the top-rated area: a point in about 31 ft of water that rates prime for yellowtail kingfish in spring. Open the map above to see every rated spot for each species and season.
For mulloway, 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 Horseyard Bay is regulated by the WA DPIRD (current recreational-fishing rules). Check the official Western Australia regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Pelsaert Lagoon 33 mi · Champion Bay - Northwest 56 mi · Champion Bay - Northeast 59 mi · Gum Tree Bay 117 mi · Jurien Bay - Northwest 139 mi · Shark Bay - Sector 65 146 mi · Jurien Bay - Northeast 153 mi · Jurien Bay - West 158 mi · Yanchep Lagoon 241 mi · Shark Bay - Sector 18 247 mi · Cockburn Sound - Northwest 269 mi · Cockburn Sound - Northeast 280 mi
See how Horseyard Bay stacks up: best mulloway lakes in Western Australia · best yellowtail kingfish lakes in Western Australia · best king george whiting lakes in Western Australia · best tailor lakes in Western Australia
Browse all Western 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.