Leith flood map & planning overlays
A planning-constraint profile of Leith
(Devonport, TAS) - 5.57 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
5.57 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Leith'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 Leith
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: observed, lowest 2,500 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.
Leith at a glance
How Leith is zoned
Buying in Leith? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 5.57 km², Leith is highly constrained by planning overlays. About 13% of the suburb sits within a mapped flood overlay, and 92% is flagged bushfire-prone. There are 4 heritage-listed sites on record, and the dominant land-use zone is Agriculture. The median lot measures about 4,040 m² across 263 parcels.
Who lives in Leith
Census 2021 figures published by the ABS for the Leith 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 1013, and decile 9 within Tasmania. The national average is 1000.
Age profile
Share of Leith's 504 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Turners Beach - Forth, the wider ABS statistical area containing Leith. There is no annual population series published at suburb level, so this describes the surrounding area rather than Leith itself.
2,824 in 2001 to 3,700 in 2025, up 31%.
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.
Leith 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 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 Leith 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 15% of Leith. 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 220 Leith addresses (+$9 with the planning report).
See what's in the $9 report →Leith planning - frequently asked
Is Leith flood-prone?
About 13% of Leith falls within a mapped flood overlay, against the council-wide suburb average of 12%. Modelled flood depth, velocity and flood level are held for about 220 Leith addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Leith bushfire-prone?
Around 92% of Leith is mapped as bushfire-prone, compared with a Devonport average of 80%.
Is Leith under a flight path?
Aircraft were observed below 3,000 ft over about 15% of Leith, in the period sampled (4 Sep 2026 to 3 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 1,000 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 Leith?
The dominant planning zone in Leith is Agriculture, though the suburb also includes Low Density Residential and Rural.
Does Leith have heritage-listed places?
Leith has 4 heritage-listed places on record.
What is the typical lot size in Leith?
Across 263 surveyed parcels in Leith, the median lot size is about 4,040 m².
What is the population of Leith?
At the 2021 Census Leith had 504 usual residents, with a median age of 51 and an average household size of 2.6 people. The wider Turners Beach - Forth statistical area, which contains Leith, went from 2,824 people in 2001 to 3,700 in 2025, up 31%.
Is Leith an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Leith scores 1013 and sits in decile 7 of 10 nationally and decile 9 within Tasmania (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Leith?
Median household income in Leith was $1,981 a week at the 2021 Census, against $1,656 for the typical suburb in Devonport. Median rent was $215 a week and the median mortgage repayment $1,461 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Lillico | 2.2 km | 13% | 100% |
| Turners Beach Central Coast |
2.8 km | 33% | 85% |
| Don | 4.1 km | 10% | 99% |
| Forth Central Coast |
5.7 km | 15% | 100% |
| Tugrah | 5.8 km | 14% | 99% |
| Ulverstone Central Coast |
6.1 km | 14% | 69% |
| Stony Rise | 6.5 km | 9% | 77% |
| Devonport | 6.8 km | 14% | 17% |
| Forthside | 6.9 km | 7% | 100% |
| Quoiba | 7.3 km | 8% | 75% |