Catalonia flood zone mapping has expanded significantly with 172 additional kilometres now designated as high-risk areas.
The Catalan Water Agency (ACA) has updated its flood risk assessment following two years of analysis, adding 90 new sections across multiple river basins that face significant overflow danger during torrential rains.
This expansion brings the total flood-risk territory to 696.71 kilometres across 44 municipalities.
Furthermore, the agency has confirmed 26 coastal areas as vulnerable zones.
Your browser does not support the video tag.
Josep Lluís Armenter, director of the ACA, described the updated mapping as providing “a much more complete picture of current and future risk” during a parliamentary committee appearance.
Catalonia Flood Zone Mapping Evolution
The revised Preliminary Flood Risk Assessment incorporates data from 45 significant flooding episodes recorded between 2005 and 2023. Consequently, technical teams have identified areas where flood risk is either significant or where materialisation of that risk is considered probable. Additionally, the mapping now includes clear definitions for pluvial flooding – urban flooding caused by intense rainfall overwhelming drainage systems.
Newly designated risk areas span multiple river basins including Ter-Daró, Tordera, Besòs, Llobregat, Foix, Francolí and the streams of Montsià. Meanwhile, in Alcanar alone, five additional streams and urban areas have been added following recent overflow incidents, including damage from last month’s Tropical Storm Alice.
The ACA plans to complete a comprehensive, standardised flood zone mapping for all of Catalonia by the end of 2027. This ambitious project forms part of a broader regional safety infrastructure improvement initiative addressing various environmental risks.
Advanced Warning Systems Development
Looking toward future protection measures, the agency is collaborating with the Barcelona Supercomputing Center (BSC) to develop an advanced early warning system. This technology aims to provide at least two hours’ notice before flooding events, enabling emergency protocol activation.
Armenter described the project as “cutting-edge technology serving citizen security” that will integrate real-time weather data with high-resolution flood zone simulations. The system represents a significant step forward in climate adaptation planning for the region.
According to the Catalan Water Agency, flooding represents Catalonia’s primary natural risk to human life, with 301 incidents and 131 fatalities recorded since 1980. The updated mapping responds directly to increasing climate crisis impacts, particularly the rising frequency of torrential rainfall events.
Municipalities now face accelerated timelines to update their Civil Protection plans, with current compliance standing at just over 50% of the 521 obligated towns. The expanded Catalonia flood zone mapping will fundamentally reshape urban planning and emergency response strategies across the region for years to come.
Stay connected with us on social media for the latest updates and news!
TikTok | Instagram | YouTube | X
Source: Read original article
