Strathlea flood map & planning overlays
Strathlea's 16 ha blocks rank 4th of 46 in Mount Alexander.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Strathlea
(Mount Alexander, VIC) - 30.27 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 25 October 2026.
Constraint readout
30.27 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Strathlea'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 Strathlea
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 24 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.
How this is measured
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.
Strathlea at a glance
How Strathlea is zoned
Selling in Strathlea? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 30.27 km², Strathlea is highly constrained by planning overlays. About 14% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Farming Zone (FZ1). The median lot measures about 161,620 m² across 72 parcels.
Who lives in Strathlea
Census 2021 figures published by the ABS for the Strathlea 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 1001, and decile 6 within Victoria. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Castlemaine Surrounds, the wider ABS statistical area containing Strathlea. There is no annual population series published at suburb level, so this describes the surrounding area rather than Strathlea itself.
7,724 in 2001 to 9,675 in 2025, up 25%.
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.
Strathlea 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 | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, 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 25 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 Strathlea 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.
See what's in the $9 report →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 the indicative soil reactivity range to expect for a Strathlea lot.
Strathlea planning - frequently asked
Is Strathlea flood-prone?
About 14% of Strathlea falls within a mapped flood overlay, against the council-wide suburb average of 8%.
Is Strathlea bushfire-prone?
Around 100% of Strathlea is mapped as bushfire-prone, compared with a Mount Alexander average of 100%.
Is Strathlea under a flight path?
Aircraft were observed over about 26% of Strathlea in the period sampled, but only above 3,000 ft - the lowest measured was 4,000 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 Strathlea?
The dominant planning zone in Strathlea is Farming Zone (FZ1), though the suburb also includes Farming Zone (FZ) and Public Conservation and Resource Zone (PCRZ).
Does Strathlea have heritage-listed places?
No heritage-listed places are on record within Strathlea.
What is the typical lot size in Strathlea?
Across 72 surveyed parcels in Strathlea, the median lot size is about 161,620 m². There are also 3 registered easements mapped in the suburb.
Is Strathlea an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Strathlea scores 1001 and sits in decile 6 of 10 nationally and decile 6 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Sandon | 6.2 km | Not mapped | 100% |
| Cotswold Central Goldfields |
6.3 km | 23% | 100% |
| Campbelltown | 6.5 km | 13% | 100% |
| Joyces Creek Central Goldfields |
7.3 km | 24% | 100% |
| Newstead | 8.2 km | 16% | 100% |
| Yandoit Hills | 10.1 km | Not mapped | 100% |
| Strangways | 10.5 km | 23% | 100% |
| Moolort Central Goldfields |
10.8 km | 15% | 100% |
| Werona | 10.8 km | 6% | 100% |
| Glengower Hepburn |
11.0 km | 14% | 100% |