Increased summer floods plague Turkey due to climate change modifying urban landscapes
Facing the Challenge of Summer Floods: A Call for Sustainable Urban Infrastructure
Summer floods, once considered rare events, are becoming increasingly frequent and severe around the world. In recent years, these disasters have caused widespread damage, particularly in Europe and various regions of Türkiye. Professor Murat Türkeş emphasizes the urgent need to redesign urban infrastructure globally to address these growing flood risks.
When warm, humid air collides with cooler air masses, it creates atmospheric instability that triggers thunderstorms and heavy rainfall. Rising temperatures increase evaporation, leading to higher atmospheric moisture levels, intensifying these weather events. Climate change is causing summer floods to extend into temperate zones, making them a growing concern worldwide.
To combat these challenges, comprehensive infrastructure reforms are called for. Experts agree that adapting infrastructure and urban planning is vital to safeguarding communities and ensuring resilient cities in the face of climate change.
Nature-Based Solutions, Advanced Engineering, and Smart Technologies
Effective flood risk mitigation involves integrating engineered infrastructure upgrades with nature-based and smart technological solutions.
Nature-based solutions, such as rain gardens, green roofs, and constructed wetlands, mimic natural water absorption and slow runoff, reducing pressure on drainage systems and improving water quality. Restoring natural floodplains and coastal buffers also helps to store and absorb excess floodwater naturally.
Advanced engineering and flood defenses, like the Thames Barrier and Maeslantkering, can handle more intense storms and rising water levels. Combining these with traditional structures like levees and dikes provides reliable defense, especially protecting critical infrastructure.
Smart sustainable urban drainage systems integrate engineered drainage with natural processes using permeable surfaces and storage features. Real-time sensors and automated controls optimize the flow and storage of stormwater during heavy rain events, minimizing downstream flooding.
Early Warning and Monitoring Systems, Comprehensive Planning, and Economic Integration
Early warning and monitoring systems, utilizing advanced forecasting, hydrological modeling, and real-time monitoring, provide accurate flood warnings with sufficient lead time for emergency response. Mobile communication and AI improve warning reach and reliability.
Comprehensive planning and resilience assessment, applying frameworks like the PSR-GRA model, evaluate flood resilience and adapt urban planning dynamically through monitoring, assessment, and feedback. This ensures continuous improvement of flood mitigation strategies.
Investments in flood protection can also drive localized economic growth and enhance urban development, making infrastructure projects more sustainable and widely beneficial.
The catastrophic flood in Kastamonu's Bozkurt district on Aug. 11, 2021, illustrates the need for human settlements to be planned with greater respect for natural landscapes. Protecting old riverbeds and floodplains within cities and removing settlements built in flood-prone areas are essential steps to prevent future disasters.
In conclusion, addressing the growing threat of summer floods requires a multi-faceted approach that combines nature-based solutions, advanced engineering designs, and smart technologies. By adapting infrastructure and urban planning, we can ensure resilient cities that are prepared to face the challenges of climate change.
- By integrating nature-based solutions like rain gardens and green roofs into urban infrastructure, it's possible to mimic natural water absorption, slow runoff, reduce pressure on drainage systems, and improve water quality.
- Incorporating advanced engineering and flood defenses, such as the Thames Barrier and Maeslantkering, alongside traditional structures like levees and dikes, offers a reliable defense against severe storms and rising water levels, especially in protecting critical infrastructure.
- Smart sustainable urban drainage systems utilize permeable surfaces and storage features, optimizing the flow and storage of stormwater during heavy rain events using real-time sensors and automated controls, thereby minimizing downstream flooding.
- To enhance flood resilience and prevent future disasters, human settlements should be planned with greater respect for natural landscapes, by protecting old riverbeds and floodplains within cities, and by removing settlements built in flood-prone areas.
