Direk flood map & planning overlays
A planning-constraint profile of Direk
(City of Salisbury, SA) - 2.44 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
2.44 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Direk's boundary, with the flood, bushfire and environmental overlays drawn on top. Amber hatching is the published aircraft noise (ANEF) contour. 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 Direk
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.
Inside an aircraft noise contour
69% of the suburb's land sits inside a published ANEF or airport-environs contour. Contours vary street by street, so whether a particular lot is inside one needs a property-level check.
Highest contour present
Under AS 2021, land at ANEF 30 and above is generally unacceptable for new houses and most noise-sensitive uses. The contour is a forecast, not a measurement at any one house.
Contours held
- Defence Airfields ANEF
- SA Planning and Design Code aircraft noise
Observed overflight - sampled 4 Sep to 3 Oct 2026
typical observed square 3 a day
Night movements: observed, lowest 500 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
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.
Direk at a glance
How Direk is zoned
Selling in Direk? 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 2.44 km², Direk is highly constrained by planning overlays. About 24% of the suburb sits within a mapped flood overlay, and 28% is flagged bushfire-prone. The dominant land-use zone is Strategic Employment. The median lot measures about 375 m² across 517 parcels.
Who lives in Direk
Census 2021 figures published by the ABS for the Direk 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 918, and decile 2 within South Australia. The national average is 1000.
Age profile
Share of Direk's 913 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Salisbury North, the wider ABS statistical area containing Direk. There is no annual population series published at suburb level, so this describes the surrounding area rather than Direk itself.
13,080 in 2001 to 18,931 in 2025, up 45%.
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.
Direk 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) | Inside a held contour | 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 Direk 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.
Aircraft have been seen below 3,000 ft over about 99% of Direk. 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 Direk lot.
See what's in the $9 report →Direk planning - frequently asked
Is Direk flood-prone?
About 24% of Direk falls within a mapped flood overlay, against the council-wide suburb average of 26%.
Is Direk bushfire-prone?
Around 28% of Direk is mapped as bushfire-prone, compared with a City of Salisbury average of 8%.
Is Direk affected by aircraft noise?
About 69% of Direk sits inside a published aircraft noise contour, and the highest contour present is ANEF 40 - under AS 2021, land above ANEF 25 is generally considered unacceptable for new houses, and 20-25 conditionally acceptable with noise attenuation. ANEF contours are forecasts published per airport and used to control noise-sensitive development; they are not a measurement at any one house, and a property can sit under a flight path and outside every contour.
Is Direk under a flight path?
Aircraft were observed below 3,000 ft over about 99% of Direk, in the period sampled (4 Sep 2026 to 3 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 1,500 ft. At the busiest point in the suburb about 22 aircraft a day were recorded passing over one 500 m square. 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 Direk?
The dominant planning zone in Direk is Strategic Employment, though the suburb also includes Rural and General Neighbourhood.
Does Direk have heritage-listed places?
No heritage-listed places are on record within Direk.
What is the typical lot size in Direk?
Across 517 surveyed parcels in Direk, the median lot size is about 375 m². There are also 6 registered easements mapped in the suburb.
What is the population of Direk?
At the 2021 Census Direk had 913 usual residents, with a median age of 28 and an average household size of 2.9 people. The wider Salisbury North statistical area, which contains Direk, went from 13,080 people in 2001 to 18,931 in 2025, up 45%.
Is Direk an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Direk scores 918 and sits in decile 2 of 10 nationally and decile 2 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Direk?
Median household income in Direk was $1,681 a week at the 2021 Census, against $1,276 for the typical suburb in City of Salisbury. Median rent was $325 a week and the median mortgage repayment $1,487 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Burton | 1.6 km | 43% | 9% |
| Salisbury North | 2.5 km | 38% | 0% |
| Edinburgh | 2.7 km | 27% | 14% |
| Paralowie | 3.7 km | 29% | 0% |
| Waterloo Corner City of Playford |
3.8 km | 46% | 82% |
| Penfield City of Playford |
4.1 km | 26% | 100% |
| Elizabeth South City of Playford |
4.6 km | 22% | 0% |
| Edinburgh North City of Playford |
5.0 km | 30% | 22% |
| Bolivar | 5.0 km | 30% | 0% |
| Salisbury | 5.1 km | 26% | 0% |