Seal Bay flood map & planning overlays
A planning-constraint profile of Seal Bay
(Kangaroo Island Council, SA) - 90.15 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 8 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
90.15 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Seal Bay's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Seal Bay
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 to
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.
Seal Bay at a glance
How Seal Bay is zoned
Selling in Seal Bay? 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 90.15 km², Seal Bay 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 Conservation. The median lot measures about 1,026,203 m² across 28 parcels.
Who lives in Seal Bay
Census 2021 figures published by the ABS for the Seal Bay 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 992, and decile 6 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 Seal Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Seal Bay 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.
Seal Bay 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 8 September 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 Seal Bay 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 Seal Bay lot.
See what's in the $9 report →Seal Bay planning - frequently asked
Is Seal Bay flood-prone?
Flood mapping covers Seal Bay and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 7%).
Is Seal Bay bushfire-prone?
Around 100% of Seal Bay is mapped as bushfire-prone, compared with a Kangaroo Island Council average of 96%.
Is Seal Bay under a flight path?
No aircraft were observed over Seal Bay in the period sampled (recent weeks to now). 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 Seal Bay?
The dominant planning zone in Seal Bay is Conservation, though the suburb also includes Rural and Coastal Waters and Offshore Islands.
Does Seal Bay have heritage-listed places?
No heritage-listed places are on record within Seal Bay.
What is the typical lot size in Seal Bay?
Across 28 surveyed parcels in Seal Bay, the median lot size is about 1,026,203 m².
Is Seal Bay an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Seal Bay scores 992 and sits in decile 6 of 10 nationally and decile 6 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Seddon | 12.9 km | 0% | 100% |
| Macgillivray | 15.9 km | 0% | 100% |
| Vivonne Bay | 18.7 km | 0% | 100% |
| Newland | 21.5 km | 0% | 100% |
| Parndana | 21.6 km | 0% | 100% |
| D'Estrees Bay | 23.8 km | 2% | 99% |
| Kohinoor | 24.1 km | 0% | 100% |
| Stun'Sail Boom | 26.4 km | 0% | 99% |
| Birchmore | 27.3 km | 0% | 100% |
| Duncan | 30.4 km | 0% | 100% |