Dergholm flood map & planning overlays
Dergholm farmers on 8 ha lots have a median age of 50; flood is 5.8%.
A planning-constraint profile of Dergholm
(West Wimmera, VIC) - 288.61 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 17 October 2026.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
288.61 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Dergholm'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 Dergholm
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 17 Oct 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.
Dergholm at a glance
How Dergholm is zoned
Selling in Dergholm? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 288.61 km², Dergholm is highly constrained by planning overlays. About 6% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Farming Zone (FZ1). The median lot measures about 82,274 m² across 547 parcels.
Who lives in Dergholm
Census 2021 figures published by the ABS for the Dergholm 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 962, and decile 3 within Victoria. The national average is 1000.
Age profile
Share of Dergholm's 57 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of West Wimmera, the wider ABS statistical area containing Dergholm. There is no annual population series published at suburb level, so this describes the surrounding area rather than Dergholm itself.
3,353 in 2001 to 2,656 in 2025, down 21%.
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.
Dergholm 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 17 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 Dergholm 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 Dergholm lot.
Dergholm planning - frequently asked
Is Dergholm flood-prone?
About 6% of Dergholm falls within a mapped flood overlay, against the council-wide suburb average of 7%.
Is Dergholm bushfire-prone?
Around 100% of Dergholm is mapped as bushfire-prone, compared with a West Wimmera average of 100%.
Is Dergholm under a flight path?
Aircraft were observed over about 2% of Dergholm in the period sampled, but only above 3,000 ft - the lowest measured was 5,500 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 Dergholm?
The dominant planning zone in Dergholm is Farming Zone (FZ1), though the suburb also includes Public Conservation and Resource Zone (PCRZ) and Rural Living Zone (RLZ1).
Does Dergholm have heritage-listed places?
Dergholm has 1 heritage-listed place on record.
What is the typical lot size in Dergholm?
Across 547 surveyed parcels in Dergholm, the median lot size is about 82,274 m². There are also 5 registered easements mapped in the suburb.
What is the population of Dergholm?
At the 2021 Census Dergholm had 57 usual residents, with a median age of 50 and an average household size of 2.3 people. The wider West Wimmera statistical area, which contains Dergholm, went from 3,353 people in 2001 to 2,656 in 2025, down 21%.
Is Dergholm an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Dergholm scores 962 and sits in decile 4 of 10 nationally and decile 3 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Dergholm?
Median household income in Dergholm was $1,312 a week at the 2021 Census, against $1,587 for the typical suburb in West Wimmera. Median rent was $130 a week and the median mortgage repayment $900 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Dorodong | 12.6 km | 4% | 100% |
| Warrock Glenelg |
13.0 km | 10% | 100% |
| Powers Creek | 14.4 km | <1% | 100% |
| Chetwynd | 15.3 km | 4% | 100% |
| Lake Mundi Glenelg |
18.7 km | 19% | 100% |
| Nangeela Glenelg |
19.9 km | 14% | 100% |
| Poolaijelo | 20.1 km | 4% | 100% |
| Brimboal Glenelg |
20.2 km | <1% | 100% |
| Corndale Glenelg |
22.1 km | 3% | 100% |
| Wando Bridge Glenelg |
23.6 km | 7% | 100% |