Rocklily Ridge flood map & planning overlays
A planning-constraint profile of Rocklily Ridge
(Blue Mountains, NSW) - 68.53 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
68.53 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Rocklily Ridge'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 Rocklily Ridge
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
typical observed square 1 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.
Rocklily Ridge at a glance
How Rocklily Ridge is zoned
Buying in Rocklily Ridge? 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 68.53 km², Rocklily Ridge 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 7 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 156,003 m² across 8 parcels.
Rocklily Ridge 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 | Not 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 Rocklily Ridge 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.
Aircraft have been seen below 3,000 ft over about 3% of Rocklily Ridge. 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 an indicative AS 2870 site class for a Rocklily Ridge lot.
See what's in the $9 report →Rocklily Ridge planning - frequently asked
Is Rocklily Ridge flood-prone?
Flood mapping covers Rocklily Ridge and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 1%).
Is Rocklily Ridge bushfire-prone?
Around 100% of Rocklily Ridge is mapped as bushfire-prone, compared with a Blue Mountains average of 96%.
Is Rocklily Ridge under a flight path?
Aircraft were observed below 3,000 ft over about 3% of Rocklily Ridge, and over about 71% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 2,500 ft, with an average of 5,000 ft. At the busiest point in the suburb about 1 aircraft a day were recorded passing over one 500 m square. 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 Rocklily Ridge?
The dominant planning zone in Rocklily Ridge is National Parks and Nature Reserves, though the suburb also includes Environmental Conservation and Environmental Management.
Does Rocklily Ridge have heritage-listed places?
Rocklily Ridge has 7 heritage-listed places on record.
What is the typical lot size in Rocklily Ridge?
Across 8 surveyed parcels in Rocklily Ridge, the median lot size is about 156,003 m². There are also 1 registered easements mapped in the suburb.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Govetts | 5.9 km | Not mapped | 100% |
| Leura | 6.7 km | 1% | 82% |
| Lawson | 6.9 km | 6% | 88% |
| Bullaburra | 7.1 km | 1% | 96% |
| Wentworth Falls | 7.1 km | 2% | 89% |
| Carmarthen | 8.6 km | 0% | 100% |
| Hazelbrook | 8.9 km | 5% | 94% |
| Medlow Bath | 9.4 km | Not mapped | 99% |
| Katoomba | 10.0 km | <1% | 83% |
| Blackheath | 10.2 km | Not mapped | 94% |