Castle Forbes Bay flood map & planning overlays
A planning-constraint profile of Castle Forbes Bay
(Huon Valley, TAS) - 16.89 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 19 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
16.89 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Castle Forbes Bay's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Castle Forbes Bay
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.
Castle Forbes Bay at a glance
How Castle Forbes Bay is zoned
Buying in Castle Forbes Bay? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 16.89 km², Castle Forbes Bay is highly constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Rural. The median lot measures about 32,841 m² across 144 parcels.
Who lives in Castle Forbes Bay
Census 2021 figures published by the ABS for the Castle Forbes Bay 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 950, and decile 6 within Tasmania. The national average is 1000.
Age profile
Share of Castle Forbes Bay's 176 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Geeveston - Dover, the wider ABS statistical area containing Castle Forbes Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Castle Forbes Bay itself.
3,466 in 2001 to 4,408 in 2025, up 27%.
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.
Castle Forbes Bay 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 19 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 Castle Forbes Bay 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 90 Castle Forbes Bay addresses (+$9 with the planning report).
See what's in the $9 report →Castle Forbes Bay planning - frequently asked
Is Castle Forbes Bay flood-prone?
About 7% of Castle Forbes Bay falls within a mapped flood overlay, against the council-wide suburb average of 8%. Modelled flood depth, velocity and flood level are held for about 90 Castle Forbes Bay addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Castle Forbes Bay bushfire-prone?
Around 100% of Castle Forbes Bay is mapped as bushfire-prone, compared with a Huon Valley average of 99%.
Is Castle Forbes Bay under a flight path?
No aircraft were observed over Castle Forbes Bay 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 Castle Forbes Bay?
The dominant planning zone in Castle Forbes Bay is Rural, though the suburb also includes Agriculture and Environmental Management.
Does Castle Forbes Bay have heritage-listed places?
Castle Forbes Bay has 1 heritage-listed place on record.
What is the typical lot size in Castle Forbes Bay?
Across 144 surveyed parcels in Castle Forbes Bay, the median lot size is about 32,841 m².
What is the population of Castle Forbes Bay?
At the 2021 Census Castle Forbes Bay had 176 usual residents, with a median age of 53 and an average household size of 2.4 people. The wider Geeveston - Dover statistical area, which contains Castle Forbes Bay, went from 3,466 people in 2001 to 4,408 in 2025, up 27%.
Is Castle Forbes Bay an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Castle Forbes Bay scores 950 and sits in decile 3 of 10 nationally and decile 6 within Tasmania (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Castle Forbes Bay?
Median household income in Castle Forbes Bay was $1,221 a week at the 2021 Census, against $1,206 for the typical suburb in Huon Valley. Median rent was $290 a week and the median mortgage repayment $1,220 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Franklin | 4.9 km | 6% | 99% |
| Port Huon | 5.8 km | 9% | 94% |
| Glen Huon | 7.4 km | 7% | 100% |
| Geeveston | 7.7 km | 6% | 100% |
| Glaziers Bay | 7.9 km | 5% | 100% |
| Lower Wattle Grove | 8.7 km | 4% | 100% |
| Cradoc | 8.8 km | 11% | 100% |
| Cairns Bay | 9.0 km | 7% | 100% |
| Woodstock | 9.8 km | 14% | 100% |
| Wattle Grove | 9.8 km | 5% | 100% |