Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1

Study region: This study was conducted in Dodola town, Ethiopia. Study focus: This study aims to examine the impacts of landuse and climate changes on peak runoff and flooding volumes, and also evaluates the effectiveness of low-impact development using SWMM 5.1. Three decades of landuse landcover w...

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Main Author: Takele Sambeto Bibi
Format: Article
Language:English
Published: Elsevier 2022-12-01
Series:Journal of Hydrology: Regional Studies
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214581822002804
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author Takele Sambeto Bibi
author_facet Takele Sambeto Bibi
author_sort Takele Sambeto Bibi
collection DOAJ
description Study region: This study was conducted in Dodola town, Ethiopia. Study focus: This study aims to examine the impacts of landuse and climate changes on peak runoff and flooding volumes, and also evaluates the effectiveness of low-impact development using SWMM 5.1. Three decades of landuse landcover were analyzed to assess the performance of the existing drainage system. Furthermore, the effect of climate change on drainage system performance was assessed using the estimated design storms from two global climate models (CanESM2 and HadGEM2-ES). New hydrological insights for region: The trend of landuse landcover analysis shows that the town has experienced a significant increase in the impervious surface area ranging from 59.73 % to 86.01 %. In response to urbanization, the trend of peak stormwater showed a continuously increasing trend. The field observations confirm that the landuse change has had a significant impact on the performance of stormwater drainage systems. The study also found that the peak runoff and flooding volume of the study area was increased under separate and combined effects of rainfall intensity variation due to climate change and increased impervious surface area. This finding indicates that existing drainage systems flooded due to discharge exceeding the design capacity and that profit is required when considering the effects of both land-use and climate change scenarios. Three environmentally friendly low-impact development approaches: bio-retention, permeable pavement, and a combination of the two are applied to reduce increased peak stormwater and mitigate flooding problems.
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spelling doaj.art-23065d239fad48749a08c228de014e542022-12-22T02:54:55ZengElsevierJournal of Hydrology: Regional Studies2214-58182022-12-0144101267Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1Takele Sambeto Bibi0Madda Walabu University, College of Engineering, Department of Water Supply and Environmental Engineering, P.O.Box 247, Robe, EthiopiaStudy region: This study was conducted in Dodola town, Ethiopia. Study focus: This study aims to examine the impacts of landuse and climate changes on peak runoff and flooding volumes, and also evaluates the effectiveness of low-impact development using SWMM 5.1. Three decades of landuse landcover were analyzed to assess the performance of the existing drainage system. Furthermore, the effect of climate change on drainage system performance was assessed using the estimated design storms from two global climate models (CanESM2 and HadGEM2-ES). New hydrological insights for region: The trend of landuse landcover analysis shows that the town has experienced a significant increase in the impervious surface area ranging from 59.73 % to 86.01 %. In response to urbanization, the trend of peak stormwater showed a continuously increasing trend. The field observations confirm that the landuse change has had a significant impact on the performance of stormwater drainage systems. The study also found that the peak runoff and flooding volume of the study area was increased under separate and combined effects of rainfall intensity variation due to climate change and increased impervious surface area. This finding indicates that existing drainage systems flooded due to discharge exceeding the design capacity and that profit is required when considering the effects of both land-use and climate change scenarios. Three environmentally friendly low-impact development approaches: bio-retention, permeable pavement, and a combination of the two are applied to reduce increased peak stormwater and mitigate flooding problems.http://www.sciencedirect.com/science/article/pii/S2214581822002804UrbanizationClimate changePeak stormwaterUrban floodingLID
spellingShingle Takele Sambeto Bibi
Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1
Journal of Hydrology: Regional Studies
Urbanization
Climate change
Peak stormwater
Urban flooding
LID
title Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1
title_full Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1
title_fullStr Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1
title_full_unstemmed Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1
title_short Modeling urban stormwater management in the town of Dodola based on landuse and climate change using SWMM 5.1
title_sort modeling urban stormwater management in the town of dodola based on landuse and climate change using swmm 5 1
topic Urbanization
Climate change
Peak stormwater
Urban flooding
LID
url http://www.sciencedirect.com/science/article/pii/S2214581822002804
work_keys_str_mv AT takelesambetobibi modelingurbanstormwatermanagementinthetownofdodolabasedonlanduseandclimatechangeusingswmm51