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Assessment of Surface Water Potential and Demand Scenarios Analysis On Surface water potential Assessment and demand scenarios Analysis In Omo-Gibe River Basin SURFACE WATER POTENTIAL ASSESSMENT AND DEMAND SCEINARIO ANALYSIS IN OMO GIBE RIVER BASIN Addis Ababa University Addis Ababa Institute of Technology School of Civil and Environmental Engineering Hydraulics Engineering M.Sc. Program Dereje Atinafu May 5, 2015 [AAIT] Page i Surface water potential Assessment and demand scenarios Analysis In Omo-Gibe River Basin SURFACE WATER POTENTIAL ASESSMENT AND DEMAND SCEINARIO ANALYSIS IN OMO GIBE RIVER BASIN Thesis Submitted in partial fulfillment of the requirements of the degree of Master of Science in Civil Engineering (Hydraulics Engineering) By Dereje Atinafu Advisor Dr Agizew Nigusse School of Civil and Environmental Engineering Addis Ababa Institute of Technology Addis Ababa, Ethiopia July, 2015 [AAIT] Page ii Surface water potential Assessment and demand scenarios Analysis In Omo-Gibe River Basin The Thesis entitled “Surface Water Potential Assessment and Demand Scenario Analyses in Omo Gibe River Basin” by Dereje Atinafu is approved for the degree of Master of Science in Civil Engineering (Hydraulic Engineering stream). Board of Examiners Name Signature Advisor ……………………… …………………….. External Examiner ……………………… …………………….. Internal Examiner ……………………… ……………………. [AAIT] Page iii Surface water potential Assessment and demand scenarios Analysis In Omo-Gibe River Basin ACKNOWLEDGEMENTS This thesis would not have been completed had it not been for the generous support and encouragement of different persons and institutions throughout the study period. First and foremost, I would like to thank my family for their continuous supports. I would like to thank University of Gondar and Addis Ababa Institute of Technology for giving me the opportunity to pursue this postgraduate study in Hydraulic Engineering. I am highly indebted to Mr Debebe Dereb for all the supports and guidance he has extended to me during my study. I do not think that I would have reached this stage without your genuine advice. I would also like to thank Dr.Agezew Nigussie for his direction and guidance throughout the process My appreciation is also to Dr. Geremew Sahlu, for his invaluable inputs and supports. [AAIT] Page iv Surface water potential Assessment and demand scenarios Analysis In Omo-Gibe River Basin Table of Contents List of Table ................................................................................................................................................ vii List of Figures .............................................................................................................................................. vii 1. INTRODUCTION ......................................................................................................................................... 1 1.1 Background ......................................................................................................................................... 1 1.2 Statement of the problem .................................................................................................................. 1 1.3 Research question ............................................................................................................................... 2 1.4 Objectives............................................................................................................................................ 2 1.4.1 General objective of the study ..................................................................................................... 2 1.4.2 Specific Objectives ....................................................................................................................... 2 1.5 Significance of the study ..................................................................................................................... 3 2: Literature review ....................................................................................................................................... 5 2.1 General overview ................................................................................................................................ 5 2.2 Hydrological Processes........................................................................................................................ 5 2.3 Model Selection .................................................................................................................................. 6 2.3.1 Problems to be considered .......................................................................................................... 6 2.3.2 Criteria of selection ...................................................................................................................... 7 2.4 The Selected Model ............................................................................................................................ 8 2.4.1 SWAT model ................................................................................................................................. 8 2.4.2 WEAP model ................................................................................................................................ 9 2.5 Irrigation and Hydropower development in the basin and constraints ............................................. 9 2.5.1 Irrigation ....................................................................................................................................... 9 2.5.2 Hydropower ............................................................................................................................... 11 2.6 Water Demand .................................................................................................................................. 14 2.6.1 Irrigation Water Demand ........................................................................................................... 14 2.6.2 Environmental Flow Requirement ............................................................................................. 15 2.6.3 Domestic water demand ............................................................................................................. 18 2.6.4 Livestock water use .................................................................................................................... 18 2.6.5 Industrial Water Demand ........................................................................................................... 18 2.7 previous studies approaches and Gaps .............................................................................................. 19 3. METHDOLOGY MATERIAL AND PROCEJURS ........................................................................................... 21 3.1 Description of the study area............................................................................................................ 21 3.2 Climate of the study area .................................................................................................................. 21 3.2.1 Rainfall ....................................................................................................................................... 21 3.2.2 Temperature ............................................................................................................................... 23 3.2.3 Topography and slope ................................................................................................................ 23 3.3 Geology soil and land use ................................................................................................................. 24 3.3.1 Geology ...................................................................................................................................... 24 3.3.2 Soil .............................................................................................................................................. 24 3.3.3 Land use ..................................................................................................................................... 25 3.4 Data collection Gap filling and Quality control test .......................................................................... 26 3.4.1 Data Collection ........................................................................................................................... 26 3.4.2 Hydrological data ....................................................................................................................... 26 3.4.3 Metrological data ....................................................................................................................... 28 [AAIT] Page v Surface water potential Assessment and demand scenarios Analysis In Omo-Gibe River Basin 3.4.4 Missing data estimation ............................................................................................................. 35 3.4.5 Data Quality Control tests .......................................................................................................... 35 3.4.5.1 Test for record consistency ..................................................................................................... 35 3.4.6 Digital Elevation Model Data ..................................................................................................... 39 3.4.7 Land use Land cover data .......................................................................................................... 40 3.4.8 Soil data .....................................................................................................................................
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