Climate emergency poses incompatibility with existing structures and infrastructure.
In the face of increasingly frequent and intense flood events in the Mediterranean region, Valencia, Spain, is taking a proactive approach to protect its densely populated areas. The recommendations for flood protection emphasize a combination of technical infrastructure upgrades and nature-based solutions to increase resilience.
Jorge Olcina Cantos, a geography professor at the University of Alicante, has been appointed to a 100-member expert commission for the reconstruction of the Valencia region. His expertise in climate development, water management, and risk adaptation will be invaluable as the region implements these recommendations.
Technical Infrastructure Enhancements
Modernizing and climate-proofing critical infrastructure is crucial. For instance, Iberdrola's project in Valencia involves rebuilding power distribution grids with measures such as undergrounding cables, raising and resizing substations, installing smart transformers, and increasing automation and digitalization to improve supply security during extreme weather.
Developing early warning systems and decision-support tools is also essential. The Argos system in nearby Catalonia integrates real-time meteorological data and sensor inputs to provide early warnings, improving emergency preparedness and response. This approach is adaptable for flood-prone urban areas like Valencia.
Nature-based Solutions
Using natural features such as "nature walls" planted with endemic vegetation along riverbanks can absorb and slow floodwaters, reducing runoff and erosion while filtering water naturally. Protecting and restoring natural floodplains and wetlands around urban areas can also increase water retention capacity during heavy rains.
Community and Public Awareness
Authorities urge the public to avoid parking or standing in flood-prone areas during storms and to moderate speed and use main routes during flood events to minimize accidents. Enhancing community resilience through awareness campaigns, early warning alerts, and preparedness programs is also crucial.
Considering Climate Crisis Impact
Flood-prone regions like Valencia face more frequent and intense rainfall events, as shown by the 2024 floods caused by over 300 mm rain in less than 24 hours. Climate-proofing infrastructure and integrating nature-based methods are essential to adapt to these changes, reducing vulnerability to flash floods and associated hazards.
The implementation of such strategies, however, faces challenges. The national and regional reconstruction commissions in Valencia do not collaborate, which is symptomatic of Spain's government structure. Furthermore, implementation of a law is politically difficult due to governments often rolling back predecessor projects for ideological reasons.
A rebuilding of this magnitude requires coordination at all levels, including the review of municipal plans and consideration of partial diversion or channeling of rivers. A law is needed to obligate municipalities in Spain to revise their zoning plans every 15 years in response to new climatic realities, as many plans are still from the 1980s.
In high-risk areas with life danger, long-term resettlements may be necessary for certain buildings in the Valencia region. The debate should shift from questioning the existence of climate change to minimizing damage and adapting to its effects.
Olcina's expertise extends beyond Valencia, as he is part of the UN expert commission for climate change and advisor to the European verification platform EuroClimateCheck. More room for science and experts is proposed in risk management, with politics setting goals and budgets while experts develop measures.
- To further mitigate potential flood impacts, Olcina's expertise in environmental science could contribute significantly to the development of nature-based solutions such as sustainable, climate-resilient infrastructure, like incorporating native vegetation in flood barriers and preserving or restoring natural floodplains for water retention.
- With García-Herrera's focus on health-and-wellness, and Olcina's specialization in climate change, their collaborative efforts could potentially lead to strategies that not only prioritize flood protection but also promote the overall well-being of Valencia's residents, by integrating measures that address not only physical risks but also psychological and socio-economic factors associated with climate change and flood events.
