Mount Mary flood map & planning overlays
A planning-constraint profile of Mount Mary
(Mid Murray Council, SA) - 130.3 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
130.3 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Mary'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 Mount Mary
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 26 Sep 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.
Mount Mary at a glance
How Mount Mary is zoned
Selling in Mount Mary? 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 130.3 km², Mount Mary 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. The dominant land-use zone is Rural. The median lot measures about 26,549 m² across 311 parcels.
Who lives in Mount Mary
Census 2021 figures published by the ABS for the Mount Mary 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 817, and decile 1 within South Australia. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Waikerie, the wider ABS statistical area containing Mount Mary. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Mary itself.
6,941 in 2001 to 6,793 in 2025, down 2%.
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.
Mount Mary 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 26 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 Mount Mary 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 Mount Mary lot.
See what's in the $9 report →Mount Mary planning - frequently asked
Is Mount Mary flood-prone?
Flood mapping covers Mount Mary and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 48%).
Is Mount Mary bushfire-prone?
Around 100% of Mount Mary is mapped as bushfire-prone, compared with a Mid Murray Council average of 100%.
Is Mount Mary under a flight path?
Aircraft were observed over about 4% of Mount Mary in the period sampled, but only above 3,000 ft - the lowest measured was 4,500 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 Mount Mary?
The dominant planning zone in Mount Mary is Rural, though the suburb also includes Rural Settlement and Rural Intensive Enterprise.
Does Mount Mary have heritage-listed places?
No heritage-listed places are on record within Mount Mary.
What is the typical lot size in Mount Mary?
Across 311 surveyed parcels in Mount Mary, the median lot size is about 26,549 m².
Is Mount Mary an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Mary scores 817 and sits in decile 1 of 10 nationally and decile 1 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Beatty | 8.9 km | 0% | 100% |
| Eba | 11.0 km | 0% | 100% |
| Bower The Regional Council of Goyder |
14.1 km | 0% | 100% |
| Morgan | 16.6 km | 23% | 100% |
| Brownlow The Regional Council of Goyder |
18.8 km | 0% | 100% |
| Wombats Rest | 19.5 km | 100% | 100% |
| North West Bend | 20.9 km | 100% | 100% |
| Beaumonts | 21.0 km | 100% | 100% |
| Brenda Park | 21.0 km | 100% | 100% |
| Morphetts Flat | 21.5 km | 100% | 100% |