Yahl flood map & planning overlays
A planning-constraint profile of Yahl
(Southern Limestone Coast Council, SA) - 50.2 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 12 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
50.2 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Yahl's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Yahl
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 to
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.
Yahl at a glance
How Yahl is zoned
Selling in Yahl? 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 50.2 km², Yahl 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. There are 2 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 31,311 m² across 421 parcels.
Who lives in Yahl
Census 2021 figures published by the ABS for the Yahl 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 994, and decile 6 within South Australia. The national average is 1000.
Age profile
Share of Yahl's 817 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Grant, the wider ABS statistical area containing Yahl. There is no annual population series published at suburb level, so this describes the surrounding area rather than Yahl itself.
5,110 in 2001 to 6,505 in 2025, up 27%.
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.
Yahl 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 12 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 Yahl 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Yahl lot.
See what's in the $9 report →Yahl planning - frequently asked
Is Yahl flood-prone?
Flood mapping covers Yahl and none of the suburb falls within a mapped flood overlay.
Is Yahl bushfire-prone?
Around 100% of Yahl is mapped as bushfire-prone, compared with a Southern Limestone Coast Council average of 98%.
Is Yahl under a flight path?
No aircraft were observed over Yahl in the period sampled (recent weeks to now). Sampling is intermittent, so that is a floor rather than proof that none fly over. 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 Yahl?
The dominant planning zone in Yahl is Rural, though the suburb also includes Rural Horticulture and Township.
Does Yahl have heritage-listed places?
Yahl has 2 heritage-listed places on record.
What is the typical lot size in Yahl?
Across 421 surveyed parcels in Yahl, the median lot size is about 31,311 m².
What is the population of Yahl?
At the 2021 Census Yahl had 817 usual residents, with a median age of 43 and an average household size of 2.9 people. The wider Grant statistical area, which contains Yahl, went from 5,110 people in 2001 to 6,505 in 2025, up 27%.
Is Yahl an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Yahl scores 994 and sits in decile 6 of 10 nationally and decile 6 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Yahl?
Median household income in Yahl was $1,918 a week at the 2021 Census, against $1,833 for the typical suburb in Southern Limestone Coast Council. Median rent was $225 a week and the median mortgage repayment $1,603 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Square Mile | 4.2 km | 0% | 100% |
| Ob Flat | 6.2 km | 0% | 100% |
| Caroline | 6.5 km | 0% | 100% |
| Caveton | 8.2 km | 0% | 100% |
| Mount Gambier City of Mount Gambier |
8.5 km | 0% | 41% |
| Worrolong | 8.6 km | 0% | 98% |
| Glenburnie | 8.8 km | 0% | 100% |
| Mil-Lel | 11.7 km | 0% | 100% |
| Suttontown | 13.7 km | 0% | 96% |
| Moorak | 14.3 km | 0% | 100% |