Alton Downs flood map & planning overlays
Alton Downs' 1,324 residents live on 14 ha lots, 73.8% of which are flood-mapped.
Most lots here are flood-mapped. The free check shows how much of one lot the overlay covers.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Alton Downs
(Rockhampton Regional, QLD) - 177.08 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
177.08 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Alton Downs'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
How common is mapped flood risk across Alton Downs properties?
Counts of properties, not share of land, across 863 analysed Alton Downs properties; no individual property result is identified.
Lot-level readout
Flood-risk rating across all 863 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Alton Downs.
Has Alton Downs flooded? Flood history and overland flow
Yes. Recorded flood mapping reaches into Alton Downs: 257 of the 863 properties we analysed (29.8%) sit at least partly inside a mapped historical flood extent (Historic Flood 2011: 257, Historic Flood 2017: 239). The free address check says whether a given lot is inside one.
Suburb-wide totals across 863 analysed properties; they do not identify or describe any individual property.
Recorded historical flood mapping
257 analysed properties intersect at least one mapped historical event extent.
- Historic Flood 2011: 257
- Historic Flood 2017: 239
Source: Rockhampton Regional Council flood mapping, aggregated by LayeredGeo. Categories are only shown where at least five analysed properties share them. An address-level check is still required to determine whether a particular lot is mapped.
Aircraft noise and flight paths over Alton Downs
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 7 Nov 2026
typical observed square 1 a day
Night movements: observed, lowest 2,500 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.
How this is measured
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.
Alton Downs at a glance
Schools in and near Alton Downs
Public school-location data shows availability across the suburb; it does not rate schools or assign any individual address to a catchment.
Inside the suburb boundary
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 6.03 km from the suburb boundary
Secondary: 6.25 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time.
Which school zone is a Alton Downs address in? Check an address with our free school zone checker.
How Alton Downs is zoned
Selling in Alton Downs? The lot-level zone is the zoning Part 3 of Queensland's Form 2 seller disclosure statement asks for - see our Form 2 planning data guide.
Across its 177.08 km², Alton Downs is highly constrained by planning overlays. About 74% of the suburb sits within a mapped flood overlay, and 20% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is largely flat, and the median lot measures about 138,358 m² across 768 parcels.
Who lives in Alton Downs
Census 2021 figures published by the ABS for the Alton Downs 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 986, and decile 7 within Queensland. The national average is 1000.
Age profile
Share of Alton Downs's 1,324 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Rockhampton Surrounds - West, the wider ABS statistical area containing Alton Downs. There is no annual population series published at suburb level, so this describes the surrounding area rather than Alton Downs itself.
2,720 in 2001 to 3,226 in 2025, up 19%.
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.
Alton Downs 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 relevant council planning scheme and Queensland Government spatial data |
| Bushfire-prone mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Zoning | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Heritage and environment | Mapped where published | the relevant council planning scheme and Queensland Government spatial data |
| Aircraft noise contours (ANEF) | Not held | the relevant council planning scheme and Queensland Government spatial data, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
Profile last materially updated 7 November 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 Alton Downs 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.
See what's in the $9 report →Aircraft have been seen below 3,000 ft over about 2% of Alton Downs. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Alton Downs. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
The Terrain Report shows the fall of the block - contours, cross sections and a 3D model of the lot to spin round in your browser (+$9 with the planning report).
Moving here? The Liveability section adds walking times from the address to schools, parks, shops and transport, and the school zones it sits in (+$9 with the planning report).
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and the indicative soil reactivity range to expect for a Alton Downs lot.
Alton Downs planning - frequently asked
Is Alton Downs flood-prone?
About 74% of Alton Downs falls within a mapped flood overlay, against the council-wide suburb average of 53%. Across the suburb, 18% of the 863 properties we analysed carry some level of mapped flood risk, including 131 rated high risk or historically affected. Published flood models are held over parts of Alton Downs; the free check on the Flood Model Report page says whether one reaches a given address.
Has Alton Downs flooded?
Yes. Recorded flood mapping reaches into Alton Downs: 257 of the 863 properties we analysed (29.8%) sit at least partly inside a mapped historical flood extent (Historic Flood 2011: 257, Historic Flood 2017: 239). The free address check says whether a given lot is inside one.
Is Alton Downs bushfire-prone?
Around 20% of Alton Downs is mapped as bushfire-prone, compared with a Rockhampton Regional average of 49%.
Is Alton Downs under a flight path?
Aircraft were observed below 3,000 ft over about 2% of Alton Downs, and over about 40% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 7 Nov 2026). The lowest measured aircraft was at 1,000 ft, with an average of 6,500 ft. At the busiest point in the suburb about 1 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 Alton Downs?
The dominant planning zone in Alton Downs is Rural, though the suburb also includes Environmental management and conservation and Sport and recreation.
Does Alton Downs have heritage-listed places?
No heritage-listed places are on record within Alton Downs.
Is Alton Downs hilly or flat?
Alton Downs is largely flat: the median ground slope is about 2%. Ground level runs from roughly 7 m to 56 m AHD across the suburb.
What is the typical lot size in Alton Downs?
Across 768 surveyed parcels in Alton Downs, the median lot size is about 138,358 m². There are also 119 registered easements mapped in the suburb.
What is the population of Alton Downs?
At the 2021 Census Alton Downs had 1,324 usual residents, with a median age of 41 and an average household size of 2.8 people. The wider Rockhampton Surrounds - West statistical area, which contains Alton Downs, went from 2,720 people in 2001 to 3,226 in 2025, up 19%.
Is Alton Downs an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Alton Downs scores 986 and sits in decile 5 of 10 nationally and decile 7 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Alton Downs?
Median household income in Alton Downs was $2,077 a week at the 2021 Census, against $1,327 for the typical suburb in Rockhampton Regional. Median rent was $330 a week and the median mortgage repayment $1,863 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Etna Creek Livingstone Shire |
9.9 km | 79% | 45% |
| Pink Lily | 9.9 km | 100% | 33% |
| Glenlee Livingstone Shire |
10.4 km | 76% | 35% |
| Nine Mile | 11.2 km | 47% | 42% |
| Glendale Livingstone Shire |
11.4 km | 47% | 19% |
| South Yaamba | 12.2 km | 94% | 30% |
| Ridgelands | 12.4 km | 45% | 24% |
| Fairy Bower | 13.1 km | 100% | 16% |
| West Rockhampton | 13.2 km | 96% | 4% |
| Parkhurst | 13.2 km | 60% | 34% |