Vivonne Bay flood map & planning overlays

A planning-constraint profile of Vivonne Bay (Kangaroo Island Council, SA) - 134.4 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.

Planning schematicVivonne Bay

Constraint readout

134.4 km² - this suburb is highly constrained by planning overlays.

Flood overlay 0%

below council avg (7%) · #26 of 49 mapped council suburbs

Bushfire-prone 100%

≈ council avg (96%) · #21 of 49 mapped council suburbs

Environmental35%

≈ council avg (38%) · #25 of 49 in council

Heritage sites 0 Character 13% Mostly Rural Bushfire 21st most affected of 49 →

Elevation hillshade with street names, clipped to Vivonne Bay's boundary, with the flood, bushfire and environmental overlays drawn on top.

Nearby suburbs, nearest first

Aircraft noise and flight paths over Vivonne 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 4 Sep to 3 Oct 2026

No aircraft observed

of the suburb, in the sampled period - a floor, not a census

Lowest measured

2,500 ft

averaging 2,500 ft

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.

Vivonne Bay at a glance

Parcels 335 Median lot 933 m²

How Vivonne Bay is zoned

Rural 78%

Conservation 21%

Rural Living 0%

Coastal Waters and Offshore Islands 0%

Rural Shack Settlement 0%

Selling in Vivonne 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 134.4 km², Vivonne 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 Rural. The median lot measures about 933 m² across 335 parcels.

Who lives in Vivonne Bay

Census 2021 figures published by the ABS for the Vivonne Bay suburb boundary itself, not a wider region.

Population

usual residents, 2021

Median age

years

Median household income

$1,249

per week, Kangaroo Island Council suburb typical $1,249

Median rent

$190

per week, Kangaroo Island Council suburb typical $200

Median mortgage

$921

per month

Household size

2.6

people, average

Socio-economic standing

ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.

Advantage and disadvantage (IRSAD) Decile 6

most disadvantagedleast disadvantaged

Score 997, and decile 7 within South Australia. The national average is 1000.

Relative disadvantage (IRSD) Decile 6

most disadvantagedleast disadvantaged

Age profile

Share of Vivonne Bay's 95 residents in each ABS age band.

0-4 9.5%

5-14 9.5%

15-19 4.8%

20-24 4.8%

25-34 9.5%

35-44 20.2%

45-54 19.0%

55-64 13.1%

65-74 4.8%

75-84 4.8%

85+ 0.0%

Population trend, 2001 to 2025

Estimated resident population of Kangaroo Island, the wider ABS statistical area containing Vivonne Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Vivonne 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.

Vivonne 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 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 Vivonne 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 Vivonne Bay lot.

See what's in the $9 report →

Vivonne Bay planning - frequently asked

Is Vivonne Bay flood-prone?

Flood mapping covers Vivonne Bay and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 7%).

Is Vivonne Bay bushfire-prone?

Around 100% of Vivonne Bay is mapped as bushfire-prone, compared with a Kangaroo Island Council average of 96%.

Is Vivonne Bay under a flight path?

No aircraft were observed over Vivonne Bay 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 Vivonne Bay?

The dominant planning zone in Vivonne Bay is Rural, though the suburb also includes Conservation and Rural Living.

Does Vivonne Bay have heritage-listed places?

No heritage-listed places are on record within Vivonne Bay.

What is the typical lot size in Vivonne Bay?

Across 335 surveyed parcels in Vivonne Bay, the median lot size is about 933 m².

What is the population of Vivonne Bay?

At the 2021 Census Vivonne Bay had 95 usual residents, with a median age of 40 and an average household size of 2.6 people. The wider Kangaroo Island statistical area, which contains Vivonne Bay, went from 4,227 people in 2001 to 5,212 in 2025, up 23%.

Is Vivonne Bay an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Vivonne Bay 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).

What is the median household income in Vivonne Bay?

Median household income in Vivonne Bay was $1,249 a week at the 2021 Census, against $1,249 for the typical suburb in Kangaroo Island Council. Median rent was $190 a week and the median mortgage repayment $921 a month.

Compare nearby suburbs

Nearby suburb	Distance	Flood mapped	Bushfire-prone
Stun'Sail Boom	8.0 km	0%	99%
Newland	12.3 km	0%	100%
Karatta	17.9 km	0%	100%
Seal Bay	18.7 km	0%	100%
Seddon	19.7 km	0%	100%
Gosse	24.1 km	0%	100%
Parndana	25.7 km	0%	100%
Duncan	26.1 km	0%	100%
Middle River	32.3 km	0%	100%
Western River	33.0 km	0%	100%

See all Kangaroo Island Council suburb profiles →