Spring Flat flood map & planning overlays
A planning-constraint profile of Spring Flat
(Mid-Western Regional, NSW) - 59.01 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
59.01 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Spring Flat's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Spring Flat
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 2 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.
Spring Flat at a glance
How Spring Flat is zoned
Buying in Spring Flat? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 59.01 km², Spring Flat is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 99% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Primary Production. The median lot measures about 105,624 m² across 274 parcels.
Who lives in Spring Flat
Census 2021 figures published by the ABS for the Spring Flat 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 1048, and decile 8 within New South Wales. The national average is 1000.
Age profile
Share of Spring Flat's 345 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mudgee Surrounds - West, the wider ABS statistical area containing Spring Flat. There is no annual population series published at suburb level, so this describes the surrounding area rather than Spring Flat itself.
9,827 in 2001 to 11,482 in 2025, up 17%.
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.
Spring Flat 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 | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, 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 3 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 Spring Flat 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Spring Flat lot.
See what's in the $9 report →Spring Flat planning - frequently asked
Is Spring Flat flood-prone?
Flood mapping covers Spring Flat and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 2%).
Is Spring Flat bushfire-prone?
Around 99% of Spring Flat is mapped as bushfire-prone, compared with a Mid-Western Regional average of 98%.
Is Spring Flat under a flight path?
No aircraft were observed over Spring Flat in the period sampled (4 Sep 2026 to 2 Oct 2026). Sampling is intermittent, so that is a floor rather than proof that none fly over. 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 Spring Flat?
The dominant planning zone in Spring Flat is Primary Production, though the suburb also includes National Parks and Nature Reserves and Environmental Management.
Does Spring Flat have heritage-listed places?
Spring Flat has 1 heritage-listed place on record.
What is the typical lot size in Spring Flat?
Across 274 surveyed parcels in Spring Flat, the median lot size is about 105,624 m². There are also 1 registered easements mapped in the suburb.
What is the population of Spring Flat?
At the 2021 Census Spring Flat had 345 usual residents, with a median age of 36 and an average household size of 3.0 people. The wider Mudgee Surrounds - West statistical area, which contains Spring Flat, went from 9,827 people in 2001 to 11,482 in 2025, up 17%.
Is Spring Flat an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Spring Flat scores 1048 and sits in decile 9 of 10 nationally and decile 8 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Spring Flat?
Median household income in Spring Flat was $2,974 a week at the 2021 Census, against $1,625 for the typical suburb in Mid-Western Regional. Median rent was $375 a week and the median mortgage repayment $2,540 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Burrundulla | 4.9 km | 13% | 98% |
| Mullamuddy | 5.9 km | 0% | 100% |
| Mudgee | 6.7 km | 3% | 64% |
| Mount Frome | 8.0 km | 7% | 99% |
| Milroy | 8.5 km | 73% | 98% |
| Apple Tree Flat | 9.1 km | 0% | 100% |
| Meroo | 9.6 km | 0% | 100% |
| Putta Bucca | 10.4 km | 50% | 54% |
| Bombira | 10.8 km | 16% | 54% |
| Grattai | 10.9 km | 0% | 100% |