Twin Rivers flood map & planning overlays
A planning-constraint profile of Twin Rivers
(Inverell, NSW) - 288.82 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
288.82 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Twin Rivers'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 Twin Rivers
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 2 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.
Twin Rivers at a glance
How Twin Rivers is zoned
Buying in Twin Rivers? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 288.82 km², Twin Rivers is moderately constrained by planning overlays. About 15% of the suburb sits within a mapped flood overlay, and 21% is flagged bushfire-prone. The dominant land-use zone is Primary Production. The median lot measures about 972,591 m² across 130 parcels.
Who lives in Twin Rivers
Census 2021 figures published by the ABS for the Twin Rivers 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 933, and decile 2 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Inverell Surrounds - East, the wider ABS statistical area containing Twin Rivers. There is no annual population series published at suburb level, so this describes the surrounding area rather than Twin Rivers itself.
5,221 in 2001 to 5,244 in 2025, up 0%.
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.
Twin Rivers 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 | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, 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 Twin Rivers 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Twin Rivers lot.
See what's in the $9 report →Twin Rivers planning - frequently asked
Is Twin Rivers flood-prone?
About 15% of Twin Rivers falls within a mapped flood overlay, against the council-wide suburb average of 10%.
Is Twin Rivers bushfire-prone?
Around 21% of Twin Rivers is mapped as bushfire-prone, compared with a Inverell average of 55%.
Is Twin Rivers under a flight path?
Aircraft were observed over about 2% of Twin Rivers 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 Twin Rivers?
The dominant planning zone in Twin Rivers is Primary Production, though the suburb also includes General Residential and National Parks and Nature Reserves.
Does Twin Rivers have heritage-listed places?
No heritage-listed places are on record within Twin Rivers.
What is the typical lot size in Twin Rivers?
Across 130 surveyed parcels in Twin Rivers, the median lot size is about 972,591 m². There are also 1 registered easements mapped in the suburb.
Is Twin Rivers an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Twin Rivers scores 933 and sits in decile 3 of 10 nationally and decile 2 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Boonal Gwydir |
16.3 km | <1% | 42% |
| Camp Creek | 23.7 km | 13% | 76% |
| Yetman | 29.3 km | 0% | 64% |
| North Star Gwydir |
37.1 km | Not mapped | 25% |
| Blue Nobby Gwydir |
37.8 km | Not mapped | 45% |
| Texas | 43.3 km | 12% | 46% |
| Yallaroi Gwydir |
47.5 km | Not mapped | 40% |
| Atholwood | 48.8 km | Not mapped | 73% |
| Boggabilla Moree Plains |
52.0 km | 20% | 98% |
| Coolatai Gwydir |
57.1 km | Not mapped | 80% |