Lower Longley flood map & planning overlays
A planning-constraint profile of Lower Longley
(Kingborough, TAS) - 13.48 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
13.48 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Lower Longley'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 Lower Longley
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 26 Sep 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.
Lower Longley at a glance
How Lower Longley is zoned
Buying in Lower Longley? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 13.48 km², Lower Longley is highly constrained by planning overlays. About 3% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 3 heritage-listed sites on record, and the dominant land-use zone is Rural Resource. The median lot measures about 41,449 m² across 150 parcels.
Who lives in Lower Longley
Census 2021 figures published by the ABS for the Lower Longley 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 1037, and decile 10 within Tasmania. The national average is 1000.
Age profile
Share of Lower Longley's 267 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Margate - Snug, the wider ABS statistical area containing Lower Longley. There is no annual population series published at suburb level, so this describes the surrounding area rather than Lower Longley itself.
5,246 in 2001 to 8,751 in 2025, up 67%.
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.
Lower Longley 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 | 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 Lower Longley 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 here: a Flood Model Report is available for about 100 Lower Longley addresses (+$9 with the planning report).
See what's in the $9 report →Lower Longley planning - frequently asked
Is Lower Longley flood-prone?
About 3% of Lower Longley falls within a mapped flood overlay, against the council-wide suburb average of 6%. Modelled flood depth, velocity and flood level are held for about 100 Lower Longley addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Lower Longley bushfire-prone?
Around 100% of Lower Longley is mapped as bushfire-prone, compared with a Kingborough average of 94%.
Is Lower Longley under a flight path?
Aircraft were observed over about 2% of Lower Longley in the period sampled, but only above 3,000 ft - the lowest measured was 3,500 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 Lower Longley?
The dominant planning zone in Lower Longley is Rural Resource, though the suburb also includes Environmental Living and Rural.
Does Lower Longley have heritage-listed places?
Lower Longley has 3 heritage-listed places on record.
What is the typical lot size in Lower Longley?
Across 150 surveyed parcels in Lower Longley, the median lot size is about 41,449 m².
What is the population of Lower Longley?
At the 2021 Census Lower Longley had 267 usual residents, with a median age of 47 and an average household size of 2.5 people. The wider Margate - Snug statistical area, which contains Lower Longley, went from 5,246 people in 2001 to 8,751 in 2025, up 67%.
Is Lower Longley an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Lower Longley scores 1037 and sits in decile 8 of 10 nationally and decile 10 within Tasmania (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Lower Longley?
Median household income in Lower Longley was $2,078 a week at the 2021 Census, against $1,550 for the typical suburb in Kingborough. Median rent was $383 a week and the median mortgage repayment $1,658 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Longley | 2.6 km | 7% | 100% |
| Mountain River Huon Valley |
3.4 km | 9% | 100% |
| Sandfly | 3.5 km | 6% | 100% |
| Grove Huon Valley |
4.9 km | 11% | 100% |
| Leslie Vale | 6.0 km | 5% | 100% |
| Allens Rivulet | 6.9 km | 6% | 100% |
| Kaoota | 7.4 km | 3% | 100% |
| Wellington Park Glenorchy |
7.6 km | 2% | 100% |
| Neika | 7.7 km | 5% | 100% |
| Crabtree Huon Valley |
8.2 km | 6% | 100% |