Calca flood map & planning overlays
A planning-constraint profile of Calca (The District Council of Streaky Bay, SA) - 121.3 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
121.3 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Calca'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.
Calca at a glance
How Calca is zoned
Selling in Calca? 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 Calca address.
Across its 121.3 km², Calca 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 1,336,847 m² across 83 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.
Calca 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 Calca 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 →Calca planning - frequently asked
Where can I see a flood map of Calca?
The schematic on this page is a Calca 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 Calca address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Calca flood-prone?
About 99% of Calca falls within a mapped flood overlay, against the council-wide suburb average of 97%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Calca bushfire-prone?
Yes - around 99% of Calca is mapped as bushfire-prone, compared with a The District Council of Streaky Bay average of 98%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Calca?
The dominant planning zone in Calca 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 Calca have heritage-listed places?
No heritage-listed places are on record within Calca. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Calca?
Across 83 surveyed parcels in Calca, the median lot size is about 1,336,847 m².
Do I need a planning report for a Calca property?
A Calca 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 |
|---|---|---|---|
| Sceale Bay | 9.0 km | 95% | 95% |
| Baird Bay | 11.0 km | 91% | 91% |
| Mortana | 11.6 km | 100% | 100% |
| Tyringa | 11.7 km | 99% | 99% |
| Yanerbie | 15.3 km | 99% | 99% |
| Witera | 22.2 km | 94% | 94% |
| Maryvale | 23.0 km | 100% | 100% |
| Streaky Bay | 25.4 km | 97% | 97% |
| Colley | 28.2 km | 100% | 100% |
| Westall | 28.9 km | 94% | 94% |
See all The District Council of Streaky Bay suburb profiles →