Septimus flood map & planning overlays
A planning-constraint profile of Septimus
(Mackay Regional, QLD) - 201.59 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 19 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
201.59 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Septimus's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
How common is mapped flood risk across Septimus properties?
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched in a suburb-wide analysis of 150 Septimus properties. No individual property result is identified on this page.
Lot-level readout
Flood-risk rating across all 150 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Septimus.
Septimus at a glance
Schools in and near Septimus
Public school-location data shows availability across the suburb. These figures do not rate schools and do not assign a particular address to a catchment.
Inside the suburb boundary
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 1.99 km from the suburb boundary
Secondary: 4.35 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time; use the official catchment finder for a specific address.
How Septimus is zoned
Selling in Septimus? The lot-level zone is the zoning Part 3 of Queensland's Form 2 seller disclosure statement asks for - see our Form 2 planning data guide.
Across its 201.59 km², Septimus is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 79% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is gently undulating, and the median lot measures about 351,321 m² across 137 parcels.
Who lives in Septimus
Census 2021 figures published by the ABS for the Septimus 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 968, and decile 6 within Queensland. The national average is 1000.
Age profile
Share of Septimus's 120 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Eungella Hinterland, the wider ABS statistical area containing Septimus. There is no annual population series published at suburb level, so this describes the surrounding area rather than Septimus itself.
0 in 2001 to 9 in 2025.
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.
Septimus 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 relevant council planning scheme and Queensland Government spatial data |
| Bushfire-prone mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Zoning | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Heritage and environment | Mapped where published | the relevant council planning scheme and Queensland Government spatial data |
| Aircraft noise contours (ANEF) | Not held | the relevant council planning scheme and Queensland Government spatial data, Defence |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
Profile last materially updated 19 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 Septimus 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.
Published flood models are held over parts of Septimus. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
The Terrain Report shows the fall of the block - contours, cross sections and a 3D model of the lot (+$9 with the planning report).
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Septimus lot.
See what's in the $9 report →Septimus planning - frequently asked
Is Septimus flood-prone?
Flood mapping covers Septimus and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 34%). Across the suburb, 1% of the 150 properties we analysed carry some level of mapped flood risk.
Is Septimus bushfire-prone?
Around 79% of Septimus is mapped as bushfire-prone, compared with a Mackay Regional average of 26%.
What is the zoning in Septimus?
The dominant planning zone in Septimus is Rural, though the suburb also includes Conservation.
Does Septimus have heritage-listed places?
No heritage-listed places are on record within Septimus.
Is Septimus hilly or flat?
Septimus is gently undulating: the median ground slope is about 4%, and 11% of measured points sit on grades of 15% or steeper. Ground level runs from roughly 53 m to 178 m AHD across the suburb.
What is the typical lot size in Septimus?
Across 137 surveyed parcels in Septimus, the median lot size is about 351,321 m². There are also 30 registered easements mapped in the suburb.
What is the population of Septimus?
At the 2021 Census Septimus had 120 usual residents, with a median age of 47 and an average household size of 2.6 people.
Is Septimus an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Septimus scores 968 and sits in decile 4 of 10 nationally and decile 6 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Septimus?
Median household income in Septimus was $1,843 a week at the 2021 Census, against $1,937 for the typical suburb in Mackay Regional. Median rent was $150 a week and the median mortgage repayment $1,950 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Pinevale | 8.8 km | 0% | 81% |
| Mia Mia | 9.2 km | 0% | 36% |
| Pinnacle | 11.1 km | <1% | 69% |
| Gargett | 13.3 km | 0% | 28% |
| Benholme | 13.6 km | <1% | 15% |
| Brightly | 14.6 km | 12% | 38% |
| Kinchant Dam | 15.4 km | 28% | 24% |
| Mirani | 16.9 km | 36% | 1% |
| Hazledean | 17.5 km | 0% | 89% |
| Eton | 19.2 km | 17% | 62% |