Hill River flood map & planning overlays
A planning-constraint profile of Hill River
(Clare and Gilbert Valleys Council, SA) - 108.8 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
108.8 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Hill River'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 Hill River
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: observed, lowest 4,500 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.
Hill River at a glance
How Hill River is zoned
Selling in Hill River? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 108.8 km², Hill River is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 4 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 114,225 m² across 164 parcels.
Who lives in Hill River
Census 2021 figures published by the ABS for the Hill River 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 1036, and decile 9 within South Australia. The national average is 1000.
Age profile
Share of Hill River's 98 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Gilbert Valley, the wider ABS statistical area containing Hill River. There is no annual population series published at suburb level, so this describes the surrounding area rather than Hill River itself.
4,711 in 2001 to 5,198 in 2025, up 10%.
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.
Hill River 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 South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, 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 Hill River 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 Hill River lot.
See what's in the $9 report →Hill River planning - frequently asked
Is Hill River flood-prone?
Flood mapping covers Hill River and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 0%).
Is Hill River bushfire-prone?
Around 100% of Hill River is mapped as bushfire-prone, compared with a Clare and Gilbert Valleys Council average of 100%.
Is Hill River under a flight path?
Aircraft were observed over about 7% of Hill River in the period sampled, but only above 3,000 ft - the lowest measured was 2,500 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 Hill River?
The dominant planning zone in Hill River is Rural.
Does Hill River have heritage-listed places?
Hill River has 4 heritage-listed places on record.
What is the typical lot size in Hill River?
Across 164 surveyed parcels in Hill River, the median lot size is about 114,225 m².
What is the population of Hill River?
At the 2021 Census Hill River had 98 usual residents, with a median age of 42 and an average household size of 2.9 people. The wider Gilbert Valley statistical area, which contains Hill River, went from 4,711 people in 2001 to 5,198 in 2025, up 10%.
Is Hill River an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Hill River scores 1036 and sits in decile 8 of 10 nationally and decile 9 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Hill River?
Median household income in Hill River was $1,625 a week at the 2021 Census, against $1,437 for the typical suburb in Clare and Gilbert Valleys Council. Median rent was $220 a week and the median mortgage repayment $1,647 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Spring Farm | 6.9 km | 0% | 100% |
| Stanley Flat | 7.9 km | 0% | 100% |
| Barinia | 8.0 km | 0% | 100% |
| Clare | 8.1 km | 6% | 100% |
| Polish Hill River | 9.0 km | 0% | 100% |
| Farrell Flat The Regional Council of Goyder |
9.5 km | 0% | 100% |
| Armagh | 10.5 km | 0% | 100% |
| Emu Flat | 10.8 km | 0% | 100% |
| Gillentown | 11.1 km | 0% | 100% |
| Hilltown | 11.4 km | 0% | 100% |