Dumbleton flood map & planning overlays
Dumbleton: a 12.2% median slope and $2,531 a week per household.
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 Dumbleton
(Mackay Regional, QLD) - 12.55 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
12.55 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Dumbleton'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 Dumbleton properties?
Counts of properties, not share of land, across 117 analysed Dumbleton properties; no individual property result is identified.
Lot-level readout
Flood-risk rating across all 117 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Dumbleton.
Aircraft noise and flight paths over Dumbleton
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 2,000 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.
Dumbleton at a glance
Schools in and near Dumbleton
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: 1.82 km from the suburb boundary
Secondary: 6.21 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time; use the official catchment finder for a specific address.
How Dumbleton is zoned
Selling in Dumbleton? 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 12.55 km², Dumbleton is highly constrained by planning overlays. About 55% of the suburb sits within a mapped flood overlay, and 18% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is hilly, and the median lot measures about 14,606 m² across 126 parcels.
Who lives in Dumbleton
Census 2021 figures published by the ABS for the Dumbleton 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 1010, and decile 8 within Queensland. The national average is 1000.
Age profile
Share of Dumbleton's 242 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Seaforth - Calen, the wider ABS statistical area containing Dumbleton. There is no annual population series published at suburb level, so this describes the surrounding area rather than Dumbleton itself.
7,079 in 2001 to 8,785 in 2025, up 24%.
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.
Dumbleton 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 Dumbleton 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 26% of Dumbleton. 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 Dumbleton. 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).
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and the indicative soil reactivity range to expect for a Dumbleton lot.
Dumbleton planning - frequently asked
Is Dumbleton flood-prone?
About 55% of Dumbleton falls within a mapped flood overlay, against the council-wide suburb average of 36%. Across the suburb, 44% of the 117 properties we analysed carry some level of mapped flood risk. Published flood models are held over parts of Dumbleton; the free check on the Flood Model Report page says whether one reaches a given address.
Is Dumbleton bushfire-prone?
Around 18% of Dumbleton is mapped as bushfire-prone, compared with a Mackay Regional average of 26%.
Is Dumbleton under a flight path?
Aircraft were observed below 3,000 ft over about 26% of Dumbleton, and over about 66% 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 500 ft, with an average of 5,500 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 Dumbleton?
The dominant planning zone in Dumbleton is Rural, though the suburb also includes Special purpose and Open space.
Does Dumbleton have heritage-listed places?
No heritage-listed places are on record within Dumbleton.
Is Dumbleton hilly or flat?
Dumbleton is hilly: the median ground slope is about 12%, and 39% of measured points sit on grades of 15% or steeper. Ground level runs from roughly 14 m to 93 m AHD across the suburb.
What is the typical lot size in Dumbleton?
Across 126 surveyed parcels in Dumbleton, the median lot size is about 14,606 m². There are also 45 registered easements mapped in the suburb.
What is the population of Dumbleton?
At the 2021 Census Dumbleton had 242 usual residents, with a median age of 52 and an average household size of 2.7 people. The wider Seaforth - Calen statistical area, which contains Dumbleton, went from 7,079 people in 2001 to 8,785 in 2025, up 24%.
Is Dumbleton an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Dumbleton scores 1010 and sits in decile 7 of 10 nationally and decile 8 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Dumbleton?
Median household income in Dumbleton was $2,531 a week at the 2021 Census, against $1,937 for the typical suburb in Mackay Regional. Median rent was $300 a week and the median mortgage repayment $1,733 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Walkerston | 3.3 km | 77% | 2% |
| Farleigh | 4.2 km | <1% | 6% |
| Alexandra | 4.2 km | 75% | 0% |
| Erakala | 4.8 km | 44% | 7% |
| Pleystowe | 6.0 km | 50% | 1% |
| Glenella | 6.6 km | 43% | 11% |
| Te Kowai | 6.9 km | 63% | <1% |
| Balnagowan | 6.9 km | 13% | 29% |
| Greenmount | 7.1 km | Not mapped | 16% |
| Racecourse | 7.5 km | 68% | 2% |