Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP

Study region: Central Rift Valley Lakes sub-basin, Ethiopia. Study focus: The competition for water is rapidly increasing in Central Rift Valley lakes sub-basin due to the combined effect of various water resources developments. However, the impacts of recent and future water resources development p...

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Autores principales:	Demelash Wondimagegnehu Goshime, Alemseged Tamiru Haile, Tom Rientjes, Rafik Absi, Béatrice Ledésert, Tobias Siegfried
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Water demand Central Rift Valley Water abstraction WEAP, water resources development Ethiopia Physical geography GB3-5030 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/9e9a33c70cd04169aa1bef79b96669a4
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spelling	oai:doaj.org-article:9e9a33c70cd04169aa1bef79b96669a42021-11-22T04:25:51ZImplications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP2214-581810.1016/j.ejrh.2021.100969https://doaj.org/article/9e9a33c70cd04169aa1bef79b96669a42021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214581821001981https://doaj.org/toc/2214-5818Study region: Central Rift Valley Lakes sub-basin, Ethiopia. Study focus: The competition for water is rapidly increasing in Central Rift Valley lakes sub-basin due to the combined effect of various water resources developments. However, the impacts of recent and future water resources development pathways on the water balance of the three interconnected lakes (i.e. Lake Ziway, Langano and Abiyata) are unknown. The Water Evaluation And Planning (WEAP) model was used to assess the development impacts on the lakes’ water resources. We considered three development pathways that are, recent (2009–2018), short-term (2019–2028) and long-term development (2029–2038). Lake Ziway water inflows from six catchments were estimated using the Hydrologiska Byråns Vattenbalansavdelning (HBV) rainfall-runoff model. Crop water requirements for irrigation schemes were estimated by the CROPWAT model. New hydrological insights for the region: WEAP simulations show a total water demand of 102.3 Mm3 under the recent development pathway that increases by 46% and 118% for short-term and long-term development pathways, respectively. This will notably affect the water balance of the interconnected lakes and cause an unmet water demand of 47.9 Mm3 for the long-term (2028–2038). For Lake Ziway and Abiyata, water levels will decrease substantially to cause water scarcity in the long-term, and developments in Lake Ziway will significantly affect water storages in Lake Abiyata. Overall, future developments will threaten the water resource of the interconnected lake system.Demelash Wondimagegnehu GoshimeAlemseged Tamiru HaileTom RientjesRafik AbsiBéatrice LedésertTobias SiegfriedElsevierarticleWater demandCentral Rift ValleyWater abstractionWEAP, water resources developmentEthiopiaPhysical geographyGB3-5030GeologyQE1-996.5ENJournal of Hydrology: Regional Studies, Vol 38, Iss , Pp 100969- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Water demand Central Rift Valley Water abstraction WEAP, water resources development Ethiopia Physical geography GB3-5030 Geology QE1-996.5
spellingShingle	Water demand Central Rift Valley Water abstraction WEAP, water resources development Ethiopia Physical geography GB3-5030 Geology QE1-996.5 Demelash Wondimagegnehu Goshime Alemseged Tamiru Haile Tom Rientjes Rafik Absi Béatrice Ledésert Tobias Siegfried Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP
description	Study region: Central Rift Valley Lakes sub-basin, Ethiopia. Study focus: The competition for water is rapidly increasing in Central Rift Valley lakes sub-basin due to the combined effect of various water resources developments. However, the impacts of recent and future water resources development pathways on the water balance of the three interconnected lakes (i.e. Lake Ziway, Langano and Abiyata) are unknown. The Water Evaluation And Planning (WEAP) model was used to assess the development impacts on the lakes’ water resources. We considered three development pathways that are, recent (2009–2018), short-term (2019–2028) and long-term development (2029–2038). Lake Ziway water inflows from six catchments were estimated using the Hydrologiska Byråns Vattenbalansavdelning (HBV) rainfall-runoff model. Crop water requirements for irrigation schemes were estimated by the CROPWAT model. New hydrological insights for the region: WEAP simulations show a total water demand of 102.3 Mm3 under the recent development pathway that increases by 46% and 118% for short-term and long-term development pathways, respectively. This will notably affect the water balance of the interconnected lakes and cause an unmet water demand of 47.9 Mm3 for the long-term (2028–2038). For Lake Ziway and Abiyata, water levels will decrease substantially to cause water scarcity in the long-term, and developments in Lake Ziway will significantly affect water storages in Lake Abiyata. Overall, future developments will threaten the water resource of the interconnected lake system.
format	article
author	Demelash Wondimagegnehu Goshime Alemseged Tamiru Haile Tom Rientjes Rafik Absi Béatrice Ledésert Tobias Siegfried
author_facet	Demelash Wondimagegnehu Goshime Alemseged Tamiru Haile Tom Rientjes Rafik Absi Béatrice Ledésert Tobias Siegfried
author_sort	Demelash Wondimagegnehu Goshime
title	Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP
title_short	Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP
title_full	Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP
title_fullStr	Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP
title_full_unstemmed	Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP
title_sort	implications of water abstraction on the interconnected central rift valley lakes sub-basin of ethiopia using weap
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9e9a33c70cd04169aa1bef79b96669a4
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Implications of water abstraction on the interconnected Central Rift Valley Lakes sub-basin of Ethiopia using WEAP

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