Urban Stormwater Drainage Design: Integration of Conventional and Sustainable Technologies in Puerto Villamil, Galápagos
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Abstract
Isabela Island faces stormwater management challenges due to its topography and extreme weather events. This study was conducted to design an efficient and sustainable stormwater drainage system for Puerto Villamil, with the aim of preventing sanitary sewer system overload and reducing environmental impact. The design was developed using hydraulic calculations in spreadsheets, validated with SWMM software, and took into account technical standards and local conditions. Nature-based solutions such as permeable pavements, tree pits, and rain gardens were incorporated. The final design included 136 pipes, 136 manholes, and 3 outfalls, with 2.12 ha allocated to Sustainable Urban Drainage Systems (SUDs). Runoff volume was reduced by 38%, and pipe diameters and excavation volumes were optimized. The project represents an innovative alternative for water management in protected areas, aligned with SDGs 6, 11, and 14.
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