Modelling the effect of sediment and solid waste deposition on pluvial flood risk using in situ high-resolution rainfall and water level measurements DOI Creative Commons
Henrik Olsson, Seith N. Mugume, Johanna Sörensen

и другие.

Water Science & Technology, Год журнала: 2025, Номер 91(6), С. 757 - 782

Опубликована: Март 10, 2025

ABSTRACT Pluvial flooding is a significant threat in many Sub-Saharan African cities, driven by rapid urbanisation, climate change, failures, and insufficient hydraulic capacity of existing urban drainage systems (UDSs). However, limited modelling studies have investigated the effect sediment solid waste accumulation on performance UDSs during extreme loading conditions. In this research, influence combined scenarios deposition rainfall upper Lubigi catchment Kampala was investigated. The collected high-resolution data water level observations combination with field were used for model calibration validation. results show three locations that account over 50% flooded volume catchment, based A near-complete blockage at culvert crossings increased flood volumes up to 40% higher (≥50 years) return periods 105% low (≤10 years). This research underscores importance using modelling, as well necessity improved UDS asset management, effective management order achieve resilient sustainable cities.

Язык: Английский

Modelling the effect of sediment and solid waste deposition on pluvial flood risk using in situ high-resolution rainfall and water level measurements DOI Creative Commons
Henrik Olsson, Seith N. Mugume, Johanna Sörensen

и другие.

Water Science & Technology, Год журнала: 2025, Номер 91(6), С. 757 - 782

Опубликована: Март 10, 2025

ABSTRACT Pluvial flooding is a significant threat in many Sub-Saharan African cities, driven by rapid urbanisation, climate change, failures, and insufficient hydraulic capacity of existing urban drainage systems (UDSs). However, limited modelling studies have investigated the effect sediment solid waste accumulation on performance UDSs during extreme loading conditions. In this research, influence combined scenarios deposition rainfall upper Lubigi catchment Kampala was investigated. The collected high-resolution data water level observations combination with field were used for model calibration validation. results show three locations that account over 50% flooded volume catchment, based A near-complete blockage at culvert crossings increased flood volumes up to 40% higher (≥50 years) return periods 105% low (≤10 years). This research underscores importance using modelling, as well necessity improved UDS asset management, effective management order achieve resilient sustainable cities.

Язык: Английский

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