Willson River flood map & planning overlays
A planning-constraint profile of Willson River (Kangaroo Island Council, SA) - 25.47 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
25.47 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Willson River's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Willson River at a glance
How Willson River is zoned
Selling in Willson River? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose - a $9 planning report pulls them at the lot level for any Willson River address.
Across its 25.47 km², Willson River is highly constrained by planning overlays. About 99% of the suburb sits within a mapped flood overlay, and 99% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 443,681 m² across 39 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Willson River data sources and coverage
Every figure below is an aggregate for the suburb boundary. “Not mapped” means LayeredGeo does not hold a source layer covering this suburb; it is never an all-clear for a particular property.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Demographics | Not available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 20 August 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
Check a specific Willson River address
See exactly which overlays touch a single property - the interactive map is free. Need it on paper? A full planning PDF is just $9.
See what's in the $9 report →Willson River planning - frequently asked
Where can I see a flood map of Willson River?
The schematic on this page is a Willson River flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 99% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Willson River address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Willson River flood-prone?
About 99% of Willson River falls within a mapped flood overlay, against the council-wide suburb average of 100%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Willson River bushfire-prone?
Yes - around 99% of Willson River is mapped as bushfire-prone, compared with a Kangaroo Island Council average of 96%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Willson River?
The dominant planning zone in Willson River is Rural, though the suburb also includes Conservation and Coastal Waters and Offshore Islands. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Willson River have heritage-listed places?
No heritage-listed places are on record within Willson River. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Willson River?
Across 39 surveyed parcels in Willson River, the median lot size is about 443,681 m².
Do I need a planning report for a Willson River property?
A Willson River planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Dudley West | 7.6 km | 100% | 100% |
| Porky Flat | 8.2 km | 100% | 100% |
| Dudley East | 9.0 km | 100% | 100% |
| Baudin Beach | 9.8 km | 100% | 83% |
| Brown Beach | 9.9 km | 100% | 87% |
| American Beach | 10.4 km | 100% | 93% |
| Pelican Lagoon | 11.2 km | 100% | 94% |
| Kangaroo Head | 12.7 km | 100% | 99% |
| Antechamber Bay | 12.8 km | 100% | 99% |
| Ironstone | 12.8 km | 100% | 100% |