Mount Knowles flood map & planning overlays
A planning-constraint profile of Mount Knowles
(Mid-Western Regional, NSW) - 49.46 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
49.46 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Knowles's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Mount Knowles
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 to
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.
Mount Knowles at a glance
How Mount Knowles is zoned
Buying in Mount Knowles? 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 49.46 km², Mount Knowles is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 6 heritage-listed sites on record, and the dominant land-use zone is Environmental Management. The median lot measures about 172,214 m² across 108 parcels.
Who lives in Mount Knowles
Census 2021 figures published by the ABS for the Mount Knowles 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 1044, and decile 8 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Mudgee Surrounds - West, the wider ABS statistical area containing Mount Knowles. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Knowles 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.
Mount Knowles 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 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 Mount Knowles 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 Mount Knowles lot.
See what's in the $9 report →Mount Knowles planning - frequently asked
Is Mount Knowles flood-prone?
Flood mapping covers Mount Knowles and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 2%).
Is Mount Knowles bushfire-prone?
Around 100% of Mount Knowles is mapped as bushfire-prone, compared with a Mid-Western Regional average of 98%.
Is Mount Knowles under a flight path?
No aircraft were observed over Mount Knowles in the period sampled (recent weeks to now). 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 Mount Knowles?
The dominant planning zone in Mount Knowles is Environmental Management, though the suburb also includes Primary Production and Infrastructure.
Does Mount Knowles have heritage-listed places?
Mount Knowles has 6 heritage-listed places on record.
What is the typical lot size in Mount Knowles?
Across 108 surveyed parcels in Mount Knowles, the median lot size is about 172,214 m².
Is Mount Knowles an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Knowles scores 1044 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).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Mount Frome | 4.3 km | 7% | 99% |
| Apple Tree Flat | 6.1 km | 0% | 100% |
| Riverlea | 6.4 km | 0% | 100% |
| Havilah | 6.4 km | 0% | 100% |
| Hayes Gap | 7.4 km | 0% | 100% |
| Burrundulla | 7.7 km | 13% | 98% |
| Mullamuddy | 8.3 km | 0% | 100% |
| Buckaroo | 8.6 km | 6% | 97% |
| Milroy | 9.1 km | 73% | 98% |
| Spring Flat | 11.4 km | 0% | 99% |