Navarre · 13.216 inhabitants · 2.705 buildings analysed one by one

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

We have scored the climate risk of the 2.705 buildings in Aranguren using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. Water is the biggest factor: 501 homes are in a flood zone.

1→7tropical nights a year in a typical building, today and by 2050
10%of homes at high or very high flood risk by 2050
501homes 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

Aranguren compared with Spain

  • Tropical nights a year, 2050: 6 nights
    lower than 52 % of municipalities
  • Average summer maximum, 2050: 29,3 °C
    lower than 79 % of municipalities
  • Flood-prone area (100-year): 1,6%
    higher than 62 % of municipalities
  • Area burnt 2016-2026: 0,0%
    lower than 64 % of municipalities
  • Water stress 2050 (0-5): 3,3
    lower than 79 % 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 Aranguren

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

1

501 homes in a flood zone

501 homes

They are in the area that can flood once every 500 years according to the official maps (SNCZI); 464 of them are in the 100-year area. Next to Sadar, 242 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

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

3 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.

  • School: Colegio Público San Pedro de Mutilva
  • Health centre: Consultorio Médico de Mutilva Baja
  • Nursery school: Kuluxka

OpenStreetMap location matched to the nearest Cadastre building.

3

Where there are fewer trees, 1,9 °C hotter

1,9 °C

Around homes with between 2 and 5 % tree cover, the surface in summer is 0,4 °C above the median for Aranguren; with between 20 and 40 % tree cover, 1,5 °C below. 373 homes are in surroundings with almost no trees.

Ground surface temperature (Landsat), not air temperature. More trees usually go with less asphalt and lower density: this is a correlation, not a measure of the effect of planting trees.

4

From 1 to 7 tropical nights a year

1→7 nights

In a typical building in Aranguren, nights when the temperature stays at or above 20 °C would rise from 1 a year (1991-2020) to about 7 by 2050. For this reason, 0 % of homes would be at a high or very high level.

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

5

2 schools in heat islands

2 of 5

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 4.884 homes in Aranguren 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

  • Shade and trees in the playgrounds of the 2 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.
  • Emergency self-protection plans in the schools, care homes and health centres that are in a flood zone.
  • Download the tables by area, neighbourhood, street and watercourse (Data tab) to cross-check them with urban planning.

For residents

  • 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.
  • 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