Alicante · 47.261 inhabitants · 12.497 buildings analysed one by one

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

We have scored the climate risk of the 12.497 buildings in Dénia using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. The clearest change comes at night: from 78 to 105 tropical nights a year by 2050.

78→105tropical nights a year in a typical building, today and by 2050
36%of homes at high or very high flood risk by 2050
18.890homes 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

Dénia compared with Spain

  • Tropical nights a year, 2050: 128 nights
    higher than 100 % of municipalities
  • Average summer maximum, 2050: 31,1 °C
    lower than 66 % of municipalities
  • Flood-prone area (100-year): 0,6%
    higher than 51 % of municipalities
  • Area burnt 2016-2026: 0,0%
    lower than 64 % of municipalities
  • Water stress 2050 (0-5): 5,0
    higher than 82 % 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 Dénia

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

1

18.890 homes in a flood zone

18.890 homes

They are in the area that can flood once every 500 years according to the official maps (SNCZI); 16.057 of them are in the 100-year area. Next to Barranc de Santa Llúcia, 13 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

7.969 homes at very high wildfire risk

5.774 buildings

These are 5.774 buildings right next to vegetation that can burn. Of these, 50 are blocks of flats with 1.760 homes, where evacuation is harder.

  • Carretera Provincial Barranc del Monyo: 163
  • Carretera de les Marines: 130
  • Carrer Grua: 108
  • Carrer del Milà: 88

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

3

13.888 homes less than 2 m above sea level

13.888 homes

That is 31 % of homes. The extreme sea level in a 100-year storm reaches 1,07 m today and 1,33 m by 2050.

Ground elevation at the building (IGN digital terrain model). Being low-lying does not mean it will flood: that depends on the beach, sea defences and drainage.

4

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

12 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.

  • Hospital: HCB Dénia
  • Health centre: Centre de Salut Pública
  • Health centre: Centre de Salut de Dénia
  • Health centre: IMDR Psicólogo

OpenStreetMap location matched to the nearest Cadastre building.

5

19 schools in heat islands

19 of 21

Schools whose surroundings are at least 1 °C hotter than the municipal median in summer. They are the first candidates for shade and tree-lined playgrounds.

Ground surface temperature (Landsat) around the building closest to the OpenStreetMap point.

Six hazards

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

The 45.048 homes in Dénia 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 19 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