Lower Broughton flood map & planning overlays
A planning-constraint profile of Lower Broughton
(Port Pirie Regional Council, SA) - 127.96 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
127.96 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Lower Broughton'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 Lower Broughton
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: observed, lowest 7,500 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.
Lower Broughton at a glance
How Lower Broughton is zoned
Selling in Lower Broughton? 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 127.96 km², Lower Broughton is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 90% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 702,767 m² across 125 parcels.
Who lives in Lower Broughton
Census 2021 figures published by the ABS for the Lower Broughton 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 1020, and decile 8 within South Australia. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Port Pirie Surrounds, the wider ABS statistical area containing Lower Broughton. There is no annual population series published at suburb level, so this describes the surrounding area rather than Lower Broughton itself.
3,212 in 2001 to 3,433 in 2025, up 7%.
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.
Lower Broughton 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 Lower Broughton 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 Lower Broughton lot.
See what's in the $9 report →Lower Broughton planning - frequently asked
Is Lower Broughton flood-prone?
Flood mapping covers Lower Broughton and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 12%).
Is Lower Broughton bushfire-prone?
Around 90% of Lower Broughton is mapped as bushfire-prone, compared with a Port Pirie Regional Council average of 86%.
Is Lower Broughton under a flight path?
Aircraft were observed over about 5% of Lower Broughton in the period sampled, but only above 3,000 ft - the lowest measured was 4,000 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 Lower Broughton?
The dominant planning zone in Lower Broughton is Rural, though the suburb also includes Conservation and Coastal Waters and Offshore Islands.
Does Lower Broughton have heritage-listed places?
No heritage-listed places are on record within Lower Broughton.
What is the typical lot size in Lower Broughton?
Across 125 surveyed parcels in Lower Broughton, the median lot size is about 702,767 m².
Is Lower Broughton an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Lower Broughton scores 1020 and sits in decile 7 of 10 nationally and decile 8 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Pirie East | 9.1 km | 0% | 100% |
| Wandearah West | 10.9 km | 0% | 59% |
| Risdon Park South | 11.2 km | 19% | 96% |
| Port Davis | 11.8 km | 0% | 61% |
| Wandearah East | 13.5 km | 0% | 100% |
| Risdon Park | 13.7 km | 24% | 91% |
| Port Pirie South | 14.2 km | 41% | 87% |
| Nurom | 14.3 km | 0% | 100% |
| Coonamia | 16.6 km | 54% | 100% |
| Solomontown | 16.9 km | 49% | 75% |