Valencia · 34.630 inhabitants · 3.477 buildings analysed one by one

AldaiaClimate risk in its neighbourhoods, streets and rivers, today and in 2050

We have scored the climate risk of the 3.477 buildings in Aldaia using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. The clearest change comes at night: from 57 to 92 tropical nights a year by 2050.

57→92tropical nights a year in a typical building, today and by 2050
71%of homes at high or very high flood risk by 2050
8.816homes in the official flood zone (500 years)
At a glance

Where the risk lies by 2050

LowMediumHighVery highRivers and streams

Level of the highest hazard in each 250 m area by 2050: flooding, heat, wildfire, wind or ground movement.

Tropical nights a year in a typical building

Aldaia compared with Spain

  • Tropical nights a year, 2050: 104 nights
    higher than 96 % of municipalities
  • Average summer maximum, 2050: 32,9 °C
    higher than 57 % of municipalities
  • Flood-prone area (100-year): 2,5%
    higher than 69 % of municipalities
  • Area burnt 2016-2026: 0,0%
    lower than 64 % of municipalities
  • Water stress 2050 (0-5): 4,1
    lower than 66 % of municipalities

Position among the 8.217 municipalities: further right means more risk. These are figures for the municipality as a whole, the same for everyone; they may differ from those for the typical building. Compare with others →

What stands out

What we found in Aldaia

It comes from matching each building with its neighbourhood, its street, the nearest watercourse and its surroundings.

1

8.816 homes in a flood zone

8.816 homes

They are in the area that can flood once every 500 years according to the official maps (SNCZI); 5.235 of them are in the 100-year area. Next to Barranc de la Saleta, 2.017 homes are inside the flood zone, less than 100 m from the watercourse.

According to the Ministry’s studies, this is an annual probability of 0,2 % (500 years) or 1 % (100 years), not “once every 500 years”: it can happen two years in a row. Small gullies are not always mapped.

2

From 57 to 92 tropical nights a year

57→92 nights

In a typical building in Aldaia, nights when the temperature stays at or above 20 °C would rise from 57 a year (1991-2020) to about 92 by 2050. For this reason, 100 % of homes would be at a high or very high level.

Median of the buildings. Intermediate-to-high emissions scenario (SSP3-7.0).

3

18 schools, care homes or health centres in a flood zone

18 facilities

They are in the official 500-year flood zone or in a preferential flow zone. They are the first to review in an emergency plan: who is inside, how to get out and whether they use the ground floor.

  • Health centre: Clínica Atenea
  • School: Colegio Mariano Serra
  • School: Institut d'Educació Secundària Salvador Gadea
  • Health centre: Centre d'Especialitats d'Aldaia - José María Sancho

OpenStreetMap location matched to the nearest Cadastre building.

4

43 homes at very high wildfire risk

130 buildings

These are 130 buildings right next to vegetation that can burn. Almost all are houses (127), on the edges of the town and in housing estates.

Proximity to woodland and to burnt areas (ESA WorldCover, EFFIS). It does not measure the state of the vegetation or any firebreaks.

5

56 in every 100 buildings were built before 1980

56 %

They were built before the first thermal insulation standard (1979). With 92 tropical nights a year by 2050, they will hold the most heat at night and have the most to gain from a retrofit.

Year of construction from the Cadastre.

Six hazards

How many homes are at high risk, today and in 2050

The 14.094 homes in Aldaia by the level of their building. Tap a hazard to see it on the map.

LowMediumHighVery high
What can be done

For the town council and for residents

For the town council and its technical staff

  • Climate shelters, and late-afternoon and evening opening hours at libraries and community centres in the areas with the most tropical nights.
  • Shade and trees in the playgrounds of the 4 schools with the hottest surroundings.
  • Review with the river basin authority the watercourses with no official mapping that run next to homes, and keep them clear.
  • Firebreaks and evacuation routes in the streets that border woodland.
  • Emergency self-protection plans in the schools, care homes and health centres that are in a flood zone.

For residents

  • Air your home in the early hours, shade west-facing walls from the sun and ask about grants to insulate the roof.
  • If you live on a ground floor or have a garage next to a watercourse, have a plan: where to go upstairs, what to switch off and how to hear about warnings.
  • Keep the strip around your house clear of dry vegetation and know both ways out of your street.
  • Look up your building: the free report gives its level for each hazard, and the Climate Note gives the full detail.

Look up your building