Dunalley flood map & planning overlays
A planning-constraint profile of Dunalley
(Sorell, TAS) - 85.13 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
85.13 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Dunalley'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 Dunalley
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
typical observed square 5 a day
Night movements: observed, lowest 3,500 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.
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.
Dunalley at a glance
How Dunalley is zoned
Buying in Dunalley? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 85.13 km², Dunalley is highly constrained by planning overlays. About 11% of the suburb sits within a mapped flood overlay, and 99% is flagged bushfire-prone. There are 7 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 2,657 m² across 327 parcels.
Who lives in Dunalley
Census 2021 figures published by the ABS for the Dunalley 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 920, and decile 4 within Tasmania. The national average is 1000.
Age profile
Share of Dunalley's 333 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Forestier - Tasman, the wider ABS statistical area containing Dunalley. There is no annual population series published at suburb level, so this describes the surrounding area rather than Dunalley itself.
2,282 in 2001 to 2,738 in 2025, up 20%.
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.
Dunalley 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 Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Bushfire-prone mapping | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Zoning | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Heritage and environment | Mapped where published | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Aircraft noise contours (ANEF) | Not held | the Tasmanian Planning Scheme and the LIST (Land Tasmania), 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 Dunalley 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.
Published flood models are held here: a Flood Model Report is available for about 240 Dunalley addresses (+$9 with the planning report).
See what's in the $9 report →Dunalley planning - frequently asked
Is Dunalley flood-prone?
About 11% of Dunalley falls within a mapped flood overlay, against the council-wide suburb average of 12%. Modelled flood depth, velocity and flood level are held for about 240 Dunalley addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Dunalley bushfire-prone?
Around 99% of Dunalley is mapped as bushfire-prone, compared with a Sorell average of 92%.
Is Dunalley under a flight path?
Aircraft were observed over about 9% of Dunalley in the period sampled, but only above 3,000 ft - the lowest measured was 3,000 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 Dunalley?
The dominant planning zone in Dunalley is Rural, though the suburb also includes Agriculture and Landscape Conservation.
Does Dunalley have heritage-listed places?
Dunalley has 7 heritage-listed places on record.
What is the typical lot size in Dunalley?
Across 327 surveyed parcels in Dunalley, the median lot size is about 2,657 m².
What is the population of Dunalley?
At the 2021 Census Dunalley had 333 usual residents, with a median age of 46 and an average household size of 2.5 people. The wider Forestier - Tasman statistical area, which contains Dunalley, went from 2,282 people in 2001 to 2,738 in 2025, up 20%.
Is Dunalley an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Dunalley scores 920 and sits in decile 2 of 10 nationally and decile 4 within Tasmania (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Dunalley?
Median household income in Dunalley was $1,292 a week at the 2021 Census, against $1,352 for the typical suburb in Sorell. Median rent was $310 a week and the median mortgage repayment $1,042 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Connellys Marsh | 4.1 km | 21% | 100% |
| Boomer Bay | 5.3 km | 14% | 100% |
| Carlton River | 6.0 km | 7% | 100% |
| Copping | 6.1 km | 8% | 100% |
| Primrose Sands | 8.5 km | 14% | 83% |
| Marion Bay | 8.9 km | 42% | 100% |
| Carlton | 10.0 km | 13% | 94% |
| Forcett | 12.2 km | 6% | 100% |
| Dodges Ferry | 12.4 km | 16% | 72% |
| Murdunna Tasman |
13.3 km | 4% | 100% |