Sustainable Solutions for Urban Flooding: The Case Study of Alcala de Guadaíra (Andalusia, Spain)

Abstract

This chapter addresses the critical issue of soil waterproofing, often overlooked despite its significant environmental impact. Soil waterproofing, primarily caused by sealing materials like asphalt and concrete, disrupts natural soil functions, exacerbating land degradation and water consumption. The study focuses on the city of Alcala de Guadaíra, where 90% waterproof soil has led to numerous problems since 1900, including floods and landslides. The research proposes solutions at both private and public levels, emphasizing sustainable urban drainage systems (SUDS) and private building interventions. These solutions involve intermediate storage on private properties, functioning as energy rooftops utilizing water as an energy source. The findings underscore the potential of public–private cooperation in managing urban rain, highlighting its effectiveness in preventing and mitigating floods.