Forthside flood map & planning overlays
A planning-constraint profile of Forthside
(Devonport, TAS) - 13.78 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 6 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
13.78 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Forthside's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Forthside
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.
Forthside at a glance
How Forthside is zoned
Buying in Forthside? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 13.78 km², Forthside is highly constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 2 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 145,608 m² across 62 parcels.
Who lives in Forthside
Census 2021 figures published by the ABS for the Forthside 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 1001, and decile 9 within Tasmania. The national average is 1000.
Age profile
Share of Forthside's 76 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Turners Beach - Forth, the wider ABS statistical area containing Forthside. There is no annual population series published at suburb level, so this describes the surrounding area rather than Forthside 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.
Forthside 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 6 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 Forthside 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.
Published flood models are held here: a Flood Model Report is available for about 40 Forthside addresses (+$9 with the planning report).
See what's in the $9 report →Forthside planning - frequently asked
Is Forthside flood-prone?
About 7% of Forthside 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 40 Forthside addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Forthside bushfire-prone?
Around 100% of Forthside is mapped as bushfire-prone, compared with a Devonport average of 80%.
Is Forthside under a flight path?
No aircraft were observed over Forthside 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 Forthside?
The dominant planning zone in Forthside is Rural, though the suburb also includes Agriculture and Environmental Management.
Does Forthside have heritage-listed places?
Forthside has 2 heritage-listed places on record.
What is the typical lot size in Forthside?
Across 62 surveyed parcels in Forthside, the median lot size is about 145,608 m².
What is the population of Forthside?
At the 2021 Census Forthside had 76 usual residents, with a median age of 38 and an average household size of 2.8 people. The wider Turners Beach - Forth statistical area, which contains Forthside, went from 2,824 people in 2001 to 3,700 in 2025, up 31%.
Is Forthside an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Forthside scores 1001 and sits in decile 6 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 Forthside?
Median household income in Forthside was $2,050 a week at the 2021 Census, against $1,656 for the typical suburb in Devonport. Median rent was $149 a week and the median mortgage repayment $1,824 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Melrose | 3.7 km | 8% | 100% |
| Forth Central Coast |
3.7 km | 15% | 100% |
| Eugenana | 3.8 km | 15% | 100% |
| Paloona | 4.2 km | 12% | 100% |
| Tugrah | 4.4 km | 14% | 99% |
| Kindred Central Coast |
4.5 km | 11% | 100% |
| Aberdeen | 5.2 km | 13% | 100% |
| Quoiba | 5.9 km | 8% | 75% |
| Don | 6.4 km | 10% | 99% |
| Spreyton | 6.7 km | 29% | 74% |