Abstract

Spatial plans are key instruments in directing future developments and reducing a city’s flash flood risk. This study conducts a surface runoff simulation using SWAT analysis in the Kedurus catchment area. SWAT analysis is a hydrological analysis to measure surface runoff from precipitation with consideration of land uses, soil types, climatic data, topography and related infrastructure systems. Based on the simulation, four sub-catchment areas are currently experiencing flash flooding. Surabaya’s detailed spatial plan (RDTR) could reduce the total flood volume in the city by fifty-one per cent if all measures (drainage and other infrastructures) in the plan are implemented successfully. Nevertheless, the implementation of the measures is still questionable due to limited budget and land acquisition. In the case of plan failure, the planned developments will cause higher surface runoff, putting Surabaya is at higher risk of flooding. Therefore, Surabaya needs to diversify its flash flood risk reduction approach to ensure that the plan will achieve a low-risk city in the future.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.