Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia

Land use/cover change is one of the factors responsible for changing the water balance of the watershed by altering the magnitude of surface runoff, interflow, base flow, and evapotranspiration. This study was aimed at evaluating the impacts of land use/cover change on the water balance of Bilate wa...

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Autores principales:	Mulatu Abayicho Sulamo, Asfaw Kebede Kassa, Negash Tessema Roba
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bilate land use/cover change wasim model water balance watershed Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/5c3fda863afe416d913b651446724e07
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spelling	oai:doaj.org-article:5c3fda863afe416d913b651446724e072021-11-05T21:16:40ZEvaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia1751-231X10.2166/wpt.2021.063https://doaj.org/article/5c3fda863afe416d913b651446724e072021-10-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/4/1108https://doaj.org/toc/1751-231XLand use/cover change is one of the factors responsible for changing the water balance of the watershed by altering the magnitude of surface runoff, interflow, base flow, and evapotranspiration. This study was aimed at evaluating the impacts of land use/cover change on the water balance of Bilate watershed between 1989, 2002, and 2015. The water balance simulation model (WaSiM) was used to access the impacts of land use/cover change on water balance. The model was calibrated (1989–2003) and validated (2007–2015) using the streamflow of at Bilate Tena gauging station. The result of land-use dynamics showed land use/cover change has a significant impact on the water balance of the watershed: on runoff production, base flow, interflow, evapotranspiration, and total simulation flow. In the study watershed, the change in total simulated flow increased by 77.83%; surface runoff, interflow, and base flow increased by 80.23%, 75.69%, and 87.79% respectively; and evapotranspiration decreased by 6% throughout the study period (1989–2015). The results obtained from this study revealed that the watershed is under land/cover change that shows its impacts on hydrological processes and water balance. Thus, effective information regarding the environmental response of land use/cover change is important to hydrologists, land-use planners, watershed management, and decision-makers for sustainable water resource projects and ecosystem services. Therefore, the policy-makers, planners, and stakeholders should design strategies to ensure the sustainability of the watershed hydrology for the sake of protecting agricultural activities, and urban planning and management systems within the watershed area. HIGHLIGHTS The research aimed to understand the LULC change impact on water balance.; The impacts on hydrological cycle processes were determined.; It is possible to use the WaSiM model for any watersheds.; The model can be used for watershed managers.; The model can be used as input for data construction of hydraulic structures.;Mulatu Abayicho SulamoAsfaw Kebede KassaNegash Tessema RobaIWA Publishingarticlebilateland use/cover changewasim modelwater balancewatershedEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 4, Pp 1108-1127 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bilate land use/cover change wasim model water balance watershed Environmental technology. Sanitary engineering TD1-1066
spellingShingle	bilate land use/cover change wasim model water balance watershed Environmental technology. Sanitary engineering TD1-1066 Mulatu Abayicho Sulamo Asfaw Kebede Kassa Negash Tessema Roba Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia
description	Land use/cover change is one of the factors responsible for changing the water balance of the watershed by altering the magnitude of surface runoff, interflow, base flow, and evapotranspiration. This study was aimed at evaluating the impacts of land use/cover change on the water balance of Bilate watershed between 1989, 2002, and 2015. The water balance simulation model (WaSiM) was used to access the impacts of land use/cover change on water balance. The model was calibrated (1989–2003) and validated (2007–2015) using the streamflow of at Bilate Tena gauging station. The result of land-use dynamics showed land use/cover change has a significant impact on the water balance of the watershed: on runoff production, base flow, interflow, evapotranspiration, and total simulation flow. In the study watershed, the change in total simulated flow increased by 77.83%; surface runoff, interflow, and base flow increased by 80.23%, 75.69%, and 87.79% respectively; and evapotranspiration decreased by 6% throughout the study period (1989–2015). The results obtained from this study revealed that the watershed is under land/cover change that shows its impacts on hydrological processes and water balance. Thus, effective information regarding the environmental response of land use/cover change is important to hydrologists, land-use planners, watershed management, and decision-makers for sustainable water resource projects and ecosystem services. Therefore, the policy-makers, planners, and stakeholders should design strategies to ensure the sustainability of the watershed hydrology for the sake of protecting agricultural activities, and urban planning and management systems within the watershed area. HIGHLIGHTS The research aimed to understand the LULC change impact on water balance.; The impacts on hydrological cycle processes were determined.; It is possible to use the WaSiM model for any watersheds.; The model can be used for watershed managers.; The model can be used as input for data construction of hydraulic structures.;
format	article
author	Mulatu Abayicho Sulamo Asfaw Kebede Kassa Negash Tessema Roba
author_facet	Mulatu Abayicho Sulamo Asfaw Kebede Kassa Negash Tessema Roba
author_sort	Mulatu Abayicho Sulamo
title	Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia
title_short	Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia
title_full	Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia
title_fullStr	Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia
title_full_unstemmed	Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia
title_sort	evaluation of the impacts of land use/cover changes on water balance of bilate watershed, rift valley basin, ethiopia
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/5c3fda863afe416d913b651446724e07
work_keys_str_mv	AT mulatuabayichosulamo evaluationoftheimpactsoflandusecoverchangesonwaterbalanceofbilatewatershedriftvalleybasinethiopia AT asfawkebedekassa evaluationoftheimpactsoflandusecoverchangesonwaterbalanceofbilatewatershedriftvalleybasinethiopia AT negashtessemaroba evaluationoftheimpactsoflandusecoverchangesonwaterbalanceofbilatewatershedriftvalleybasinethiopia
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Evaluation of the impacts of land use/cover changes on water balance of Bilate watershed, Rift valley basin, Ethiopia

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