Lake Alexandrina flood map & planning overlays
A planning-constraint profile of Lake Alexandrina
(The Rural City of Murray Bridge, SA) - 590.91 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
590.91 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Lake Alexandrina'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 Lake Alexandrina
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: 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.
Lake Alexandrina at a glance
How Lake Alexandrina is zoned
Selling in Lake Alexandrina? 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 590.91 km², Lake Alexandrina is highly constrained by planning overlays. About 100% of the suburb sits 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 Conservation. The median lot measures about 114,573 m² across 85 parcels.
Lake Alexandrina 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 | Not 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 Lake Alexandrina 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 Lake Alexandrina lot.
See what's in the $9 report →Lake Alexandrina planning - frequently asked
Is Lake Alexandrina flood-prone?
About 100% of Lake Alexandrina falls within a mapped flood overlay, against the council-wide suburb average of 47%.
Is Lake Alexandrina bushfire-prone?
Around 100% of Lake Alexandrina is mapped as bushfire-prone, compared with a The Rural City of Murray Bridge average of 99%.
Is Lake Alexandrina under a flight path?
Aircraft were observed over about 7% of Lake Alexandrina in the period sampled, but only above 3,000 ft - the lowest measured was 4,500 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 Lake Alexandrina?
The dominant planning zone in Lake Alexandrina is Conservation, though the suburb also includes Rural Living and Rural.
Does Lake Alexandrina have heritage-listed places?
Lake Alexandrina has 4 heritage-listed places on record.
What is the typical lot size in Lake Alexandrina?
Across 85 surveyed parcels in Lake Alexandrina, the median lot size is about 114,573 m².
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Tolderol Alexandrina Council |
11.1 km | 78% | 100% |
| Narrung Coorong District Council |
13.8 km | 61% | 100% |
| Lake Plains Alexandrina Council |
15.0 km | 63% | 100% |
| Poltalloch Coorong District Council |
15.2 km | 44% | 100% |
| Point Sturt Alexandrina Council |
17.0 km | 100% | 100% |
| Mulgundawa | 17.1 km | 59% | 100% |
| Nalpa | 17.1 km | 100% | 100% |
| Langhorne Creek Alexandrina Council |
19.9 km | 29% | 100% |
| Wellington | 20.3 km | 63% | 100% |
| Ashville Coorong District Council |
20.5 km | 30% | 100% |