Crowther Island flood map & planning overlays
A planning-constraint profile of Crowther Island
(Clarence Valley, NSW) - 0.4 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
0.4 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Crowther Island's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Crowther Island
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.
Crowther Island at a glance
How Crowther Island is zoned
Buying in Crowther Island? 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 0.4 km², Crowther Island is highly constrained by planning overlays. About 100% of the suburb sits within a mapped flood overlay, and 52% is flagged bushfire-prone. The dominant land-use zone is Recreational Waterways. The median lot measures about 75,234 m² across 2 parcels.
Crowther Island 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 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 Crowther Island 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 Crowther Island lot.
See what's in the $9 report →Crowther Island planning - frequently asked
Is Crowther Island flood-prone?
About 100% of Crowther Island falls within a mapped flood overlay, against the council-wide suburb average of 24%.
Is Crowther Island bushfire-prone?
Around 52% of Crowther Island is mapped as bushfire-prone, compared with a Clarence Valley average of 94%.
Is Crowther Island under a flight path?
No aircraft were observed over Crowther Island 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 Crowther Island?
The dominant planning zone in Crowther Island is Recreational Waterways, though the suburb also includes Primary Production.
Does Crowther Island have heritage-listed places?
No heritage-listed places are on record within Crowther Island.
What is the typical lot size in Crowther Island?
Across 2 surveyed parcels in Crowther Island, the median lot size is about 75,234 m².
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Seelands | 1.2 km | 16% | 96% |
| Koolkhan | 1.2 km | 18% | 73% |
| Junction Hill | 1.7 km | 57% | 67% |
| Carrs Creek | 3.4 km | 96% | 100% |
| Carrs Peninsula | 3.4 km | 100% | 75% |
| Trenayr | 3.9 km | 39% | 92% |
| Alumy Creek | 4.2 km | 99% | 100% |
| Mountain View | 4.3 km | 3% | 99% |
| The Whiteman | 5.2 km | 0% | 100% |
| Carrs Island | 5.4 km | 100% | 77% |