Western River flood map & planning overlays
A planning-constraint profile of Western River
(Kangaroo Island Council, SA) - 114.29 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
114.29 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Western River's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Western River
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 3 Oct 2026
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Western River at a glance
How Western River is zoned
Selling in Western River? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 114.29 km², Western River is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 1,024,910 m² across 66 parcels.
Who lives in Western River
Census 2021 figures published by the ABS for the Western River suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 997, and decile 7 within South Australia. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Kangaroo Island, the wider ABS statistical area containing Western River. There is no annual population series published at suburb level, so this describes the surrounding area rather than Western River itself.
4,227 in 2001 to 5,212 in 2025, up 23%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Western River data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| 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 |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 3 October 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 Western 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Western River lot.
See what's in the $9 report →Western River planning - frequently asked
Is Western River flood-prone?
Flood mapping covers Western River and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 7%).
Is Western River bushfire-prone?
Around 100% of Western River is mapped as bushfire-prone, compared with a Kangaroo Island Council average of 96%.
Is Western River under a flight path?
No aircraft were observed over Western River in the period sampled (4 Sep 2026 to 3 Oct 2026). Sampling is intermittent, so that is a floor rather than proof that none fly over. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Western River?
The dominant planning zone in Western River is Rural, though the suburb also includes Conservation and Coastal Waters and Offshore Islands.
Does Western River have heritage-listed places?
No heritage-listed places are on record within Western River.
What is the typical lot size in Western River?
Across 66 surveyed parcels in Western River, the median lot size is about 1,024,910 m².
Is Western River an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Western River scores 997 and sits in decile 6 of 10 nationally and decile 7 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Gosse | 10.0 km | 0% | 100% |
| Middle River | 12.4 km | 0% | 100% |
| De Mole River | 13.2 km | 0% | 100% |
| Duncan | 16.2 km | 0% | 100% |
| Stokes Bay | 21.5 km | 0% | 100% |
| Cape Borda | 21.8 km | 0% | 100% |
| Newland | 22.8 km | 0% | 100% |
| Karatta | 27.8 km | 0% | 100% |
| Parndana | 28.8 km | 0% | 100% |
| Flinders Chase | 31.8 km | 0% | 100% |