Dunach flood map & planning overlays
Dunach carries 43.4% environmental significance overlay, 3rd in Central Goldfields.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Dunach
(Central Goldfields, VIC) - 21.93 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
21.93 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Dunach'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 Dunach
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 24 Oct 2026
Night movements: observed, lowest 3,000 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.
Dunach at a glance
How Dunach is zoned
Selling in Dunach? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 21.93 km², Dunach is highly constrained by planning overlays. About 9% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 5 heritage-listed sites on record, and the dominant land-use zone is Farming Zone (FZ1). The median lot measures about 38,096 m² across 242 parcels.
Who lives in Dunach
Census 2021 figures published by the ABS for the Dunach 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 913, and decile 1 within Victoria. The national average is 1000.
Age profile
Share of Dunach's 83 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Maryborough Surrounds, the wider ABS statistical area containing Dunach. There is no annual population series published at suburb level, so this describes the surrounding area rather than Dunach itself.
5,375 in 2001 to 5,714 in 2025, up 6%.
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.
Dunach 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 | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, 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 24 October 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 Dunach 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 →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 the indicative soil reactivity range to expect for a Dunach lot.
Dunach planning - frequently asked
Is Dunach flood-prone?
About 9% of Dunach falls within a mapped flood overlay, against the council-wide suburb average of 26%.
Is Dunach bushfire-prone?
Around 100% of Dunach is mapped as bushfire-prone, compared with a Central Goldfields average of 100%.
Is Dunach under a flight path?
Aircraft were observed over about 30% of Dunach in the period sampled, but only above 3,000 ft - the lowest measured was 4,000 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 Dunach?
The dominant planning zone in Dunach is Farming Zone (FZ1), though the suburb also includes Public Conservation and Resource Zone (PCRZ) and Farming Zone (FZ).
Does Dunach have heritage-listed places?
Dunach has 5 heritage-listed places on record.
What is the typical lot size in Dunach?
Across 242 surveyed parcels in Dunach, the median lot size is about 38,096 m². There are also 1 registered easements mapped in the suburb.
What is the population of Dunach?
At the 2021 Census Dunach had 83 usual residents, with a median age of 58 and an average household size of 2.3 people. The wider Maryborough Surrounds statistical area, which contains Dunach, went from 5,375 people in 2001 to 5,714 in 2025, up 6%.
Is Dunach an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Dunach scores 913 and sits in decile 2 of 10 nationally and decile 1 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Dunach?
Median household income in Dunach was $791 a week at the 2021 Census, against $1,024 for the typical suburb in Central Goldfields. Median rent was $200 a week and the median mortgage repayment $800 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Mount Glasgow | 1.7 km | 10% | 100% |
| Mount Cameron | 4.3 km | 14% | 100% |
| Red Lion | 5.7 km | 19% | 100% |
| Stony Creek (Talbot) | 7.4 km | 11% | 100% |
| Talbot | 7.7 km | 24% | 100% |
| Clunes Hepburn |
7.9 km | 11% | 100% |
| Glengower Hepburn |
9.6 km | 11% | 100% |
| Majorca | 11.0 km | 21% | 99% |
| Caralulup | 11.2 km | 10% | 100% |
| Mount Beckworth Hepburn |
11.4 km | 6% | 100% |