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Watershed modeling as a tool for sustainable water resources management: SWAT model application in the Awash River basin, Ethiopia
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Environmental Management and Assessment.
Florida International University, Departmet of Earth and Environment.
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Environmental Management and Assessment.ORCID iD: 0000-0002-1640-8946
2015 (English)In: Sustainability of Integrated Water Resources Management / [ed] Setegn, S.G. and Donoso, M.C., Switzerland: Springer, 2015, 579-606 p.Chapter in book (Refereed)
Abstract [en]

Improving the reliability of streamflow prediction under limited data conditions is a vital step to achieve a sustainable water management system. In many areas, when planning for balancing water demands for hydropower, irrigation, and ecosystem services as well as preventing flood risk, major gaps exist on baseline information of water resources. The prediction of streamflow requires adequate understanding of the characteristics of the river basin. Awash River basin has been a subject of large-scale flooding for several years mainly due to heavy rains and inadequate water resource management. The lack of decision support tools and limitation of available data hinder research and development in the area. The main objective of this study was to characterize the hydrological components of the upper part of Awash River basin under limited data condition. The optimal approach for this purpose was considered to be statistical analysis of the time series hydrometeorological data and to adapt existing hydrological models. The physically based Soil and Water Assessment Tool (SWAT) model was successfully calibrated and validated in the watershed. The performance of the model was evaluated based on the streamflow prediction at four subbasin outlets and the main outlet of the river basin. Model validation indicated that daily streamflows were predicted reasonably which was verified by Nash-Sutcliffe values ranging from 0.55 to 0.71. The evaluations from tributary rivers indicate that the drainage area is one of the important factors that affect the direct transferring of parameter values from one watershed to another. The catchment characteristics and its different hydrological components of the water balance are discussed.

Place, publisher, year, edition, pages
Switzerland: Springer, 2015. 579-606 p.
Keyword [en]
hydrological characteristics, distributed hydrological modeling, rainfall-runoff correlation, stream flow prediction, Awash River basin
National Category
Oceanography, Hydrology, Water Resources Environmental Sciences
Research subject
Land and Water Resources Engineering
Identifiers
URN: urn:nbn:se:kth:diva-33623DOI: 10.1007/978-3-319-12194-9_30Scopus ID: 2-s2.0-84955418421ISBN: 978-3-319-12193-2 (print)OAI: oai:DiVA.org:kth-33623DiVA: diva2:416610
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StandUp
Note

QS 20110516

Available from: 2011-05-12 Created: 2011-05-12 Last updated: 2017-07-11Bibliographically approved
In thesis
1. Hydrological modeling as a tool for sustainable water resources management: a case study of the Awash River Basin
Open this publication in new window or tab >>Hydrological modeling as a tool for sustainable water resources management: a case study of the Awash River Basin
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The growing pressure on the world‘s fresh water resources is enforced by population growth that leads to conflicts between demands for different purposes. A main concern on water use is the conflict between the environment and other purposes like hydropower, irrigation for agriculture and domestic and industry water supply, where total flows are diverted without releasing water for ecological conservation. As a consequence, some of the common problems related to water faced by many countries are shortage, quality deterioration and flood impacts. Hence, utilization of integrated water resources management in a single system, which is built up by river basin, is an optimum way to handle the question of water. However, in many areas, when planning for balancing water demands major gaps exist on baseline knowledge of water resources. In order to bridge these gaps, hydro-logical models are among the available tools used to acquire adequate understanding of the characteristics of the river basin. Apart from forecasting and predicting the quantity and quality of water for decision makers, some models could also help in predicting the impacts of natural and anthropogenic changes on water resources and also in quantifying the spatial and temporal availability of the resources. However, main challenges lie in choosing and utilizing these models for a specific basin and managerial plan. In this study, an analysis of the different types of models and application of a selected model to characterize the Awash River basin, located in Ethiopia, is presented. The results from the modeling procedure and the performance of the model are discussed. The different possible sources of uncertainties in the modeling process are also discussed. The results indicate dissimilar predictions in using different methods; hence proper care must be taken in selecting and employing available methods for a specific watershed prior to presenting the results to decision makers.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2011. x, 28 p.
Series
Trita-LWR. LIC, ISSN 1650-8629 ; 2056
Keyword
Hydrological characteristics, Distributed hydrological modeling, Rainfall-runoff correlation, Streamflow prediction, Sustainable water management, Awash River Basin
National Category
Oceanography, Hydrology, Water Resources
Identifiers
urn:nbn:se:kth:diva-33617 (URN)978-91-7501-021-2 (ISBN)
Presentation
2011-05-27, V2, KTH, Teknikringen 72, Stockholm, 10:00 (English)
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Supervisors
Note
QC 20110516Available from: 2011-05-16 Created: 2011-05-12 Last updated: 2011-11-10Bibliographically approved

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