Sedan flood map & planning overlays

A planning-constraint profile of Sedan (Mid Murray Council, SA) - 297.55 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 schematicSedan

Constraint readout

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

Flood overlay 0%

below council avg (48%) · #44 of 67 mapped council suburbs

Bushfire-prone 100%

≈ council avg (100%) · #1 of 67 mapped council suburbs

Environmental4%

below council avg (13%) · #19 of 67 in council

Heritage sites 1 Mostly Rural Bushfire 1st most affected of 67 →

Elevation hillshade with street names, clipped to Sedan's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.

Nearby suburbs, nearest first

Aircraft noise and flight paths over Sedan

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

Under observed aircraft

27%

of the suburb, at or below 10,000 ft

Below 3,000 ft

of the suburb's area

Lowest measured

3,000 ft

averaging 5,000 ft

How often

not established

aircraft were seen, but not often enough to put a rate on

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.

Sedan at a glance

Parcels 562 Median lot 319,550 m² Bus stops 4

How Sedan is zoned

Rural 100%

Township 0%

Rural Living 0%

Selling in Sedan? 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 297.55 km², Sedan 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. There is 1 heritage-listed site on record, and the dominant land-use zone is Rural. The median lot measures about 319,550 m² across 562 parcels.

Who lives in Sedan

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

Population

212

usual residents, 2021

Median age

years

Median household income

$1,052

per week, Mid Murray Council suburb typical $887

Median rent

$200

per week, Mid Murray Council suburb typical $200

Median mortgage

$1,000

per month

Household size

2.4

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 3

most disadvantagedleast disadvantaged

Score 943, and decile 3 within South Australia. The national average is 1000.

Relative disadvantage (IRSD) Decile 4

most disadvantagedleast disadvantaged

Age profile

Share of Sedan's 212 residents in each ABS age band.

0-4 7.6%

5-14 10.9%

15-19 7.6%

20-24 2.8%

25-34 15.2%

35-44 10.9%

45-54 12.8%

55-64 15.6%

65-74 13.7%

75-84 2.8%

85+ 0.0%

Population trend, 2001 to 2025

Estimated resident population of Mannum, the wider ABS statistical area containing Sedan. There is no annual population series published at suburb level, so this describes the surrounding area rather than Sedan itself.

5,925 in 2001 to 7,012 in 2025, up 18%.

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.

Sedan 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 Sedan 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.

The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.

Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Sedan lot.

See what's in the $9 report →

Sedan planning - frequently asked

Is Sedan flood-prone?

Flood mapping covers Sedan and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 48%).

Is Sedan bushfire-prone?

Around 100% of Sedan is mapped as bushfire-prone, compared with a Mid Murray Council average of 100%.

Is Sedan under a flight path?

Aircraft were observed over about 27% of Sedan in the period sampled, but only above 3,000 ft - the lowest measured was 3,000 ft. 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 Sedan?

The dominant planning zone in Sedan is Rural, though the suburb also includes Township and Rural Living.

Does Sedan have heritage-listed places?

Sedan has 1 heritage-listed place on record.

What is the typical lot size in Sedan?

Across 562 surveyed parcels in Sedan, the median lot size is about 319,550 m².

Does Sedan have a train station?

There is no train station inside Sedan itself. The suburb is served by 4 bus stops.

What is the population of Sedan?

At the 2021 Census Sedan had 212 usual residents, with a median age of 40 and an average household size of 2.4 people. The wider Mannum statistical area, which contains Sedan, went from 5,925 people in 2001 to 7,012 in 2025, up 18%.

Is Sedan an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Sedan scores 943 and sits in decile 3 of 10 nationally and decile 3 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).

What is the median household income in Sedan?

Median household income in Sedan was $1,052 a week at the 2021 Census, against $887 for the typical suburb in Mid Murray Council. Median rent was $200 a week and the median mortgage repayment $1,000 a month.

Compare nearby suburbs

Nearby suburb	Distance	Flood mapped	Bushfire-prone
Towitta	9.8 km	0%	100%
Sandleton	11.1 km	0%	100%
Fisher	13.9 km	18%	100%
Annadale	14.2 km	0%	100%
Cambrai	16.6 km	0%	100%
Truro	17.1 km	0%	100%
Keyneton	17.3 km	0%	100%
Black Hill	21.0 km	0%	100%
Steinfeld	21.5 km	0%	100%
Marks Landing	21.8 km	100%	100%

See all Mid Murray Council suburb profiles →