Cethana flood map & planning overlays
A planning-constraint profile of Cethana
(Kentish, TAS) - 6.3 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
6.3 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Cethana'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 Cethana
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 3 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.
Cethana at a glance
How Cethana is zoned
Buying in Cethana? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 6.3 km², Cethana is highly constrained by planning overlays. About 6% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Environmental Management. The median lot measures about 5,446 m² across 18 parcels.
Cethana 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 | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Bushfire-prone mapping | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Zoning | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Heritage and environment | Mapped where published | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Aircraft noise contours (ANEF) | Not held | the Tasmanian Planning Scheme and the LIST (Land Tasmania), 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 Cethana 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.
The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Cethana. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
See what's in the $9 report →Cethana planning - frequently asked
Is Cethana flood-prone?
About 6% of Cethana falls within a mapped flood overlay, against the council-wide suburb average of 8%. Published flood models are held over parts of Cethana; the free check on the Flood Model Report page says whether one reaches a given address.
Is Cethana bushfire-prone?
Around 100% of Cethana is mapped as bushfire-prone, compared with a Kentish average of 100%.
Is Cethana under a flight path?
Aircraft were observed over about 2% of Cethana in the period sampled, but only above 3,000 ft - the lowest measured was 6,500 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 Cethana?
The dominant planning zone in Cethana is Environmental Management, though the suburb also includes Utilities and Rural.
Does Cethana have heritage-listed places?
No heritage-listed places are on record within Cethana.
What is the typical lot size in Cethana?
Across 18 surveyed parcels in Cethana, the median lot size is about 5,446 m².
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Staverton | 3.4 km | 5% | 100% |
| Erriba | 5.1 km | 5% | 100% |
| Moina | 5.5 km | 5% | 100% |
| Gowrie Park | 6.1 km | 12% | 100% |
| Lorinna | 6.1 km | 6% | 100% |
| Promised Land | 7.1 km | 6% | 100% |
| Liena Meander Valley |
8.8 km | 8% | 100% |
| Wilmot | 9.1 km | 6% | 100% |
| South Nietta Central Coast |
9.5 km | 7% | 100% |
| Roland | 9.6 km | 5% | 100% |