Long Flat flood map & planning overlays
A planning-constraint profile of Long Flat
(The Rural City of Murray Bridge, SA) - 5.32 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
5.32 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Long Flat'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 Long Flat
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: 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.
Long Flat at a glance
How Long Flat is zoned
Selling in Long Flat? 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 5.32 km², Long Flat is highly constrained by planning overlays. About 100% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 2 heritage-listed sites on record, and the dominant land-use zone is Conservation. The median lot measures about 6,164 m² across 176 parcels.
Who lives in Long Flat
Census 2021 figures published by the ABS for the Long Flat 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 989, and decile 6 within South Australia. The national average is 1000.
Age profile
Share of Long Flat's 103 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Murray Bridge, the wider ABS statistical area containing Long Flat. There is no annual population series published at suburb level, so this describes the surrounding area rather than Long Flat itself.
13,841 in 2001 to 19,938 in 2025, up 44%.
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.
Long Flat 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 Long Flat 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 Long Flat lot.
See what's in the $9 report →Long Flat planning - frequently asked
Is Long Flat flood-prone?
About 100% of Long Flat falls within a mapped flood overlay, against the council-wide suburb average of 47%.
Is Long Flat bushfire-prone?
Around 100% of Long Flat is mapped as bushfire-prone, compared with a The Rural City of Murray Bridge average of 99%.
Is Long Flat under a flight path?
Aircraft were observed over about 28% of Long Flat in the period sampled, but only above 3,000 ft - the lowest measured was 7,000 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 Long Flat?
The dominant planning zone in Long Flat is Conservation, though the suburb also includes Rural and Rural Living.
Does Long Flat have heritage-listed places?
Long Flat has 2 heritage-listed places on record.
What is the typical lot size in Long Flat?
Across 176 surveyed parcels in Long Flat, the median lot size is about 6,164 m².
What is the population of Long Flat?
At the 2021 Census Long Flat had 103 usual residents, with a median age of 57 and an average household size of 2.4 people. The wider Murray Bridge statistical area, which contains Long Flat, went from 13,841 people in 2001 to 19,938 in 2025, up 44%.
Is Long Flat an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Long Flat scores 989 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).
What is the median household income in Long Flat?
Median household income in Long Flat was $1,937 a week at the 2021 Census, against $1,379 for the typical suburb in The Rural City of Murray Bridge. Median rent was $253 a week and the median mortgage repayment $1,653 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Murray Bridge East | 1.5 km | 36% | 95% |
| Swanport | 2.7 km | 100% | 100% |
| Riverglades | 3.7 km | 100% | 99% |
| Riverglen | 4.1 km | 88% | 100% |
| Murray Bridge | 4.3 km | 13% | 78% |
| Avoca Dell | 4.6 km | 98% | 100% |
| Mobilong | 4.6 km | 100% | 100% |
| Monteith | 4.9 km | 66% | 100% |
| Murray Bridge South | 5.0 km | <1% | 100% |
| Northern Heights | 5.8 km | 62% | 100% |