Happy Valley flood map & planning overlays
A planning-constraint profile of Happy Valley
(Mount Isa City, QLD) - 0.61 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
0.61 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Happy Valley's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
How common is mapped flood risk across Happy Valley properties?
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched in a suburb-wide analysis of 306 Happy Valley properties. No individual property result is identified on this page.
Lot-level readout
Flood-risk rating across all 306 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Happy Valley.
Happy Valley at a glance
Schools in and near Happy Valley
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
1 school providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: inside the suburb
Secondary: 1.10 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 Happy Valley is zoned
Selling in Happy Valley? 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 0.61 km², Happy Valley is highly constrained by planning overlays. About 38% of the suburb sits within a mapped flood overlay, and 41% is flagged bushfire-prone. The dominant land-use zone is Low Density Residential. The terrain is largely flat, and the median lot measures about 809 m² across 299 parcels.
Who lives in Happy Valley
Census 2021 figures published by the ABS for the Happy Valley 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 983, and decile 7 within Queensland. The national average is 1000.
Age profile
Share of Happy Valley's 733 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mount Isa, the wider ABS statistical area containing Happy Valley. There is no annual population series published at suburb level, so this describes the surrounding area rather than Happy Valley itself.
20,262 in 2001 to 18,162 in 2025, down 10%.
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.
Happy Valley 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 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 Happy Valley 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 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 Happy Valley lot.
See what's in the $9 report →Happy Valley planning - frequently asked
Is Happy Valley flood-prone?
About 38% of Happy Valley falls within a mapped flood overlay, against the council-wide suburb average of 13%. Across the suburb, 0% of the 306 properties we analysed carry some level of mapped flood risk.
Is Happy Valley bushfire-prone?
Around 41% of Happy Valley is mapped as bushfire-prone, compared with a Mount Isa City average of 36%.
What is the zoning in Happy Valley?
The dominant planning zone in Happy Valley is Low Density Residential, though the suburb also includes Not applied and Community Facilities.
Does Happy Valley have heritage-listed places?
No heritage-listed places are on record within Happy Valley.
Is Happy Valley hilly or flat?
Happy Valley is largely flat: the median ground slope is about 3%. Ground level runs from roughly 351 m to 359 m AHD across the suburb.
What is the typical lot size in Happy Valley?
Across 299 surveyed parcels in Happy Valley, the median lot size is about 809 m².
What is the population of Happy Valley?
At the 2021 Census Happy Valley had 733 usual residents, with a median age of 30 and an average household size of 2.9 people. The wider Mount Isa statistical area, which contains Happy Valley, went from 20,262 people in 2001 to 18,162 in 2025, down 10%.
Is Happy Valley an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Happy Valley scores 983 and sits in decile 5 of 10 nationally and decile 7 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Happy Valley?
Median household income in Happy Valley was $2,629 a week at the 2021 Census, against $2,177 for the typical suburb in Mount Isa City. Median rent was $420 a week and the median mortgage repayment $1,667 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Healy | 1.1 km | 9% | 22% |
| Parkside | 1.4 km | 31% | 2% |
| Mornington | 1.7 km | 6% | 0% |
| Mica Creek | 1.7 km | 37% | 51% |
| Spreadborough | 2.3 km | 22% | 45% |
| Townview | 2.4 km | 0% | 13% |
| Mount Isa City | 2.5 km | 5% | 0% |
| The Gap | 2.7 km | <1% | 0% |
| Miles End | 3.0 km | 44% | 16% |
| Menzies | 3.5 km | 3% | 0% |