Biscay · 4.344 inhabitants · 831 buildings analysed one by one

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

We have scored the climate risk of the 831 buildings in Igorre using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. Water is the biggest factor: 703 homes are in a flood zone.

22,9→25,8°Caverage maximum of the warmest month, today and by 2050 (no tropical nights, either today or by 2050)
63%of homes at high or very high wildfire risk by 2050
703homes 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

Igorre compared with Spain

  • Tropical nights a year, 2050: 4 nights
    lower than 56 % of municipalities
  • Average summer maximum, 2050: 25,8 °C
    lower than 92 % of municipalities
  • Flood-prone area (100-year): 0,0%
    lower than 80 % of municipalities
  • Area burnt 2016-2026: 0,0%
    lower than 64 % of municipalities
  • Water stress 2050 (0-5): 2,5
    lower than 89 % 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 Igorre

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

1

Where there are fewer trees, 5,6 °C hotter

5,6 °C

Around homes with between 10 and 20 % tree cover, the surface in summer is 3,5 °C above the median for Igorre; with more than 40 % tree cover, 2,1 °C below. 0 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.

2

703 homes in a flood zone

703 homes

They are in the area that can flood once every 500 years according to the official maps (SNCZI); 532 of them are in the 100-year area. Next to Arratia ibaia, 405 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.

3

1.214 homes at very high wildfire risk

693 buildings

These are 693 buildings right next to vegetation that can burn. Of these, 12 are blocks of flats with 256 homes, where evacuation is harder.

  • Lehendakari Agirre etorbidea: 120
  • Elexalde kalea: 112
  • Garbe kalea: 24

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

4

2 schools in heat islands

2 of 2

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 1.939 homes in Igorre 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.
  • 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.
  • 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.
  • 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