Modelling the effect of sediment and solid waste deposition on urban flooding in Kampala, Uganda
(2024) In TVVR 5000 VVRM05 20241Division of Water Resources Engineering
- Abstract
- Pluvial flooding is a significant and growing issue in Kampala, Uganda, driven by increased urbanization, lack of sufficient maintenance of the urban drainage system and climate change. This study investigates the impact of sediment and solid waste deposition on urban flooding within the upstream part of the Lubigi catchment area. Using PCSWMM, a 1D hydraulic model was developed to simulate various scenarios of sediment and solid waste deposition in combination with extreme rainfall events. Field observations, including high-resolution rain data and water level measurements, were implemented, and used for model calibration and validation. The study reveals three critical points vulnerable to flooding in the upstream Lubigi catchment area... (More)
- Pluvial flooding is a significant and growing issue in Kampala, Uganda, driven by increased urbanization, lack of sufficient maintenance of the urban drainage system and climate change. This study investigates the impact of sediment and solid waste deposition on urban flooding within the upstream part of the Lubigi catchment area. Using PCSWMM, a 1D hydraulic model was developed to simulate various scenarios of sediment and solid waste deposition in combination with extreme rainfall events. Field observations, including high-resolution rain data and water level measurements, were implemented, and used for model calibration and validation. The study reveals three critical points vulnerable to flooding in the upstream Lubigi catchment area considering current sediment and solid waste deposition. Furthermore, the results show that increasing sediment and solid waste deposition significantly increases the flooded volume, not only for high return periods but also for lower return periods. In addition, field observations of rainfall suggest that existing synthetic design storms for Kampala may inaccurately estimate the timing of the rainfall peaks. The findings highlight that frequently clearing sediment and solid waste is crucial to mitigating flooding in the upstream Lubigi catchment area. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9169315
- author
- Olsson, Hjalmar LU
- supervisor
- organization
- course
- VVRM05 20241
- year
- 2024
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- Sediment deposition, Solid waste deposition, Pluvial flooding, Kampala, Flood risk management, PCSWMM, Hydraulic modelling, Climate change, Urban drainage systems (UDSs)
- publication/series
- TVVR 5000
- report number
- TVVR24/5004
- ISSN
- 1101-9824
- language
- English
- additional info
- Examiner: Magnus Larson
- id
- 9169315
- date added to LUP
- 2024-06-28 18:43:22
- date last changed
- 2024-06-28 18:43:22
@misc{9169315, abstract = {{Pluvial flooding is a significant and growing issue in Kampala, Uganda, driven by increased urbanization, lack of sufficient maintenance of the urban drainage system and climate change. This study investigates the impact of sediment and solid waste deposition on urban flooding within the upstream part of the Lubigi catchment area. Using PCSWMM, a 1D hydraulic model was developed to simulate various scenarios of sediment and solid waste deposition in combination with extreme rainfall events. Field observations, including high-resolution rain data and water level measurements, were implemented, and used for model calibration and validation. The study reveals three critical points vulnerable to flooding in the upstream Lubigi catchment area considering current sediment and solid waste deposition. Furthermore, the results show that increasing sediment and solid waste deposition significantly increases the flooded volume, not only for high return periods but also for lower return periods. In addition, field observations of rainfall suggest that existing synthetic design storms for Kampala may inaccurately estimate the timing of the rainfall peaks. The findings highlight that frequently clearing sediment and solid waste is crucial to mitigating flooding in the upstream Lubigi catchment area.}}, author = {{Olsson, Hjalmar}}, issn = {{1101-9824}}, language = {{eng}}, note = {{Student Paper}}, series = {{TVVR 5000}}, title = {{Modelling the effect of sediment and solid waste deposition on urban flooding in Kampala, Uganda}}, year = {{2024}}, }