Lewiston flood map & planning overlays
A planning-constraint profile of Lewiston
(Adelaide Plains Council, SA) - 36.99 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
36.99 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Lewiston'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 Lewiston
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
typical observed square 3 a day
Night movements: observed, lowest 1,000 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.
Lewiston at a glance
How Lewiston is zoned
Selling in Lewiston? 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 36.99 km², Lewiston is highly constrained by planning overlays. About 60% 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 Living. The median lot measures about 10,059 m² across 1,555 parcels.
Who lives in Lewiston
Census 2021 figures published by the ABS for the Lewiston 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 962, and decile 4 within South Australia. The national average is 1000.
Age profile
Share of Lewiston's 3,275 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Lewiston - Two Wells, the wider ABS statistical area containing Lewiston. There is no annual population series published at suburb level, so this describes the surrounding area rather than Lewiston itself.
4,457 in 2001 to 8,175 in 2025, up 83%.
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.
Lewiston 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 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 Lewiston 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 35% of Lewiston. 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 Lewiston lot.
See what's in the $9 report →Lewiston planning - frequently asked
Is Lewiston flood-prone?
About 60% of Lewiston falls within a mapped flood overlay, against the council-wide suburb average of 14%.
Is Lewiston bushfire-prone?
Around 100% of Lewiston is mapped as bushfire-prone, compared with a Adelaide Plains Council average of 81%.
Is Lewiston under a flight path?
Aircraft were observed below 3,000 ft over about 35% of Lewiston, and over about 77% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 3 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 4,000 ft. At the busiest point in the suburb about 10 aircraft a day were recorded passing over one 500 m square. 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 Lewiston?
The dominant planning zone in Lewiston is Rural Living, though the suburb also includes Rural Horticulture and Conservation.
Does Lewiston have heritage-listed places?
Lewiston has 1 heritage-listed place on record.
What is the typical lot size in Lewiston?
Across 1,555 surveyed parcels in Lewiston, the median lot size is about 10,059 m².
What is the population of Lewiston?
At the 2021 Census Lewiston had 3,275 usual residents, with a median age of 42 and an average household size of 2.9 people. The wider Lewiston - Two Wells statistical area, which contains Lewiston, went from 4,457 people in 2001 to 8,175 in 2025, up 83%.
Is Lewiston an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Lewiston scores 962 and sits in decile 4 of 10 nationally and decile 4 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Lewiston?
Median household income in Lewiston was $1,910 a week at the 2021 Census, against $1,552 for the typical suburb in Adelaide Plains Council. Median rent was $330 a week and the median mortgage repayment $1,690 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Gawler River Light Regional Council |
6.0 km | 51% | 100% |
| Angle Vale City of Playford |
6.0 km | 35% | 67% |
| Two Wells | 6.4 km | 50% | 97% |
| Penfield Gardens City of Playford |
6.6 km | 43% | 100% |
| Virginia City of Playford |
7.4 km | 53% | 100% |
| Ward Belt Light Regional Council |
7.6 km | 2% | 100% |
| Reeves Plains | 7.6 km | 7% | 100% |
| Macdonald Park City of Playford |
8.2 km | 44% | 100% |
| Riverlea Park City of Playford |
8.9 km | 61% | 89% |
| Munno Para West City of Playford |
9.0 km | 29% | 4% |