Urban Flood Management through Urban Land Use Optimization Using LID Techniques, City of Addis Ababa, Ethiopia
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College of Architecture and Civil Engineering, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
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Department of Earth and Environment, Institute of Environment, Florida International University, Miami, FL 33199, USA
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Author to whom correspondence should be addressed.
Academic Editors: Francesco De Paola and Elena Bresci
Water 2021, 13(13), 1721; https://doi.org/10.3390/w13131721
Received: 25 May 2021
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Revised: 11 June 2021
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Accepted: 14 June 2021
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Published: 22 June 2021
(This article belongs to the Special Issue Advances of Low Impact Development Practices in Urban Watershed)
In recent years, many urban areas in Ethiopia have experienced frequent flood events as a result of climate change and urban sprawl. Unplanned and unsustainable poor urban storm water management strategies will aggravate the impact and frequency of flood occurrence. In this study, impacts of urbanization and climate change on generated flood magnitude are analyzed using the urban hydrological model of Storm Water Management Model (SWMM) and Low Impact Development (LID) sustainable land use optimization techniques. Three rainfall distribution patterns (TS1, TS2 and TS3) in combination with rainfall duration periods of 10, 30 and 60 min and a pessimistic climate change scenario of RCP 4.5 compared to RCP 8.5 are used for the analysis purpose for selected infiltration and storage LID techniques (Bio-Retention Cell, Infiltration Trench and Rain Barrel). The study results showed that combined LID techniques have a significant impact on urban flood reduction of up to 75%. This significant amount of flood reduction is greater than the amount of excess flood magnitude which occurred as a result of climate change using the most pessimistic climate change scenario. The study results also confirmed that rainfall patterns have a significant impact on peak discharge for shorter rainfall durations. This study highly recommends using cost effective, easy and environmental adaptive and sustainable LID techniques for urban flood management in addition to existing drainage structures.
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Keywords:
urban flood management; LID; climate change; SWMM; rainfall pattern
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MDPI and ACS Style
Jemberie, M.A.; Melesse, A.M. Urban Flood Management through Urban Land Use Optimization Using LID Techniques, City of Addis Ababa, Ethiopia. Water 2021, 13, 1721. https://doi.org/10.3390/w13131721
AMA Style
Jemberie MA, Melesse AM. Urban Flood Management through Urban Land Use Optimization Using LID Techniques, City of Addis Ababa, Ethiopia. Water. 2021; 13(13):1721. https://doi.org/10.3390/w13131721
Chicago/Turabian StyleJemberie, Mengistu A., and Assefa M. Melesse. 2021. "Urban Flood Management through Urban Land Use Optimization Using LID Techniques, City of Addis Ababa, Ethiopia" Water 13, no. 13: 1721. https://doi.org/10.3390/w13131721
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