Big Bend flood map & planning overlays
A planning-constraint profile of Big Bend
(Mid Murray Council, SA) - 0.44 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 5 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
0.44 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Big Bend's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Big Bend
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 to
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.
Big Bend at a glance
How Big Bend is zoned
Selling in Big Bend? 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 0.44 km², Big Bend is highly constrained by planning overlays. About 100% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Conservation. The median lot measures about 511 m² across 33 parcels.
Who lives in Big Bend
Census 2021 figures published by the ABS for the Big Bend 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 1016, and decile 8 within South Australia. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Mannum, the wider ABS statistical area containing Big Bend. There is no annual population series published at suburb level, so this describes the surrounding area rather than Big Bend 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.
Big Bend 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 5 September 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 Big Bend 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 Big Bend lot.
See what's in the $9 report →Big Bend planning - frequently asked
Is Big Bend flood-prone?
About 100% of Big Bend falls within a mapped flood overlay, against the council-wide suburb average of 48%.
Is Big Bend bushfire-prone?
Around 100% of Big Bend is mapped as bushfire-prone, compared with a Mid Murray Council average of 100%.
Is Big Bend under a flight path?
No aircraft were observed over Big Bend in the period sampled (recent weeks to now). 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 Big Bend?
The dominant planning zone in Big Bend is Conservation, though the suburb also includes Rural Shack Settlement and Rural.
Does Big Bend have heritage-listed places?
No heritage-listed places are on record within Big Bend.
What is the typical lot size in Big Bend?
Across 33 surveyed parcels in Big Bend, the median lot size is about 511 m².
Is Big Bend an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Big Bend scores 1016 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 |
|---|---|---|---|
| Sunnydale | 1.9 km | 100% | 100% |
| Punyelroo | 3.9 km | 100% | 100% |
| Langs Landing | 6.4 km | 100% | 100% |
| Marks Landing | 7.3 km | 100% | 100% |
| Swan Reach | 8.1 km | 25% | 100% |
| Nildottie | 9.1 km | 24% | 100% |
| Wongulla | 9.3 km | 100% | 100% |
| Forster | 11.6 km | 100% | 100% |
| Black Hill | 12.9 km | 0% | 100% |
| Fisher | 16.8 km | 18% | 100% |