Mcharg Creek flood map & planning overlays
A planning-constraint profile of Mcharg Creek
(Alexandrina Council, SA) - 12.01 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
12.01 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mcharg Creek'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 Mcharg Creek
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
Night movements: observed, lowest 8,500 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.
Mcharg Creek at a glance
How Mcharg Creek is zoned
Selling in Mcharg Creek? 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 12.01 km², Mcharg Creek 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. The dominant land-use zone is Rural. The median lot measures about 107,284 m² across 52 parcels.
Who lives in Mcharg Creek
Census 2021 figures published by the ABS for the Mcharg Creek 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 1025, and decile 8 within South Australia. The national average is 1000.
Age profile
Share of Mcharg Creek's 72 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Strathalbyn Surrounds, the wider ABS statistical area containing Mcharg Creek. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mcharg Creek itself.
5,223 in 2001 to 8,615 in 2025, up 65%.
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.
Mcharg Creek 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 Mcharg Creek 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 2% of Mcharg Creek. 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 Mcharg Creek lot.
See what's in the $9 report →Mcharg Creek planning - frequently asked
Is Mcharg Creek flood-prone?
Flood mapping covers Mcharg Creek and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 16%).
Is Mcharg Creek bushfire-prone?
Around 100% of Mcharg Creek is mapped as bushfire-prone, compared with a Alexandrina Council average of 100%.
Is Mcharg Creek under a flight path?
Aircraft were observed below 3,000 ft over about 2% of Mcharg Creek, and over about 48% 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 2,000 ft, with an average of 5,500 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 Mcharg Creek?
The dominant planning zone in Mcharg Creek is Rural, though the suburb also includes Productive Rural Landscape.
Does Mcharg Creek have heritage-listed places?
No heritage-listed places are on record within Mcharg Creek.
What is the typical lot size in Mcharg Creek?
Across 52 surveyed parcels in Mcharg Creek, the median lot size is about 107,284 m².
What is the population of Mcharg Creek?
At the 2021 Census Mcharg Creek had 72 usual residents, with a median age of 51 and an average household size of 2.5 people. The wider Strathalbyn Surrounds statistical area, which contains Mcharg Creek, went from 5,223 people in 2001 to 8,615 in 2025, up 65%.
Is Mcharg Creek an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mcharg Creek scores 1025 and sits in decile 8 of 10 nationally and decile 8 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Mcharg Creek?
Median household income in Mcharg Creek was $1,458 a week at the 2021 Census, against $1,655 for the typical suburb in Alexandrina Council. Median rent was $225 a week and the median mortgage repayment $1,640 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Blackfellows Creek | 3.1 km | 0% | 100% |
| Kuitpo Colony | 3.7 km | 0% | 100% |
| Ashbourne | 4.0 km | 0% | 100% |
| Bull Creek Mount Barker District Council |
4.8 km | 0% | 100% |
| Mount Magnificent | 5.1 km | 0% | 100% |
| Prospect Hill Mount Barker District Council |
5.3 km | 0% | 100% |
| Kyeema | 5.5 km | 0% | 100% |
| Kuitpo | 8.1 km | 0% | 100% |
| Mount Observation | 8.5 km | 0% | 100% |
| Dingabledinga | 8.6 km | 0% | 100% |