| Description |
1 online resource |
| Series |
IHE Delft PhD Thesis Ser |
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IHE Delft PhD Thesis Ser
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| Contents |
Cover; Half Title; Title Page; Copyright Page; Table of Contents; Acknowledgements; Summary; List of symbols; List of acronyms; 1: Introduction; 1.1 Background; 1.2 Hydrological processes in semi-arid catchments; 1.3 Impact of catchment management dynamics on hydrological processes; 1.4 Hydrological modelling; 1.5 Problem Statement; 1.6 Research Objectives; 1.7 Structure of the thesis; 2: Study area description; 2.1 Location and topography; 2.2 Climate; 2.3 Land use; 2.4 Soil and geological information; 2.5 Soil and Water conservation interventions; 2.6 Water resources |
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3: Evaluation of satellite products in the Upper Tekeze basin3.1 Introduction; 3.2 Data and methods; 3.2.1 Rain gauge data; 3.2.2 Satellite rainfall products; 3.2.3 Evaluation and Validation processes; 3.2.4 Evaluation statistics; 3.3 Result and Discussions; 3.3.1 Comparison at pixel-to-point spatial scale; 3.3.2 Comparison based on areal averaged rainfall; 3.4 Conclusions and Recommendations; 4: Temporal and spatial changes of rainfall and streamflow; 4.1 Introduction; 4.2 Data and methods; 4.2.1 Rainfall data; 4.2.2 Streamflow data; 4.2.3 Trend analyses method |
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4.2.4 Change point detection method4.2.5 Hydrological alteration indicators; 4.3 Results and discussion; 4.3.1 Rainfall variability over the Upper Tekeze basin; 4.3.2 Streamflow variability in the basin; 4.3.3 Analysis of hydrological variability using IHA method; 4.3.4 Drivers for streamflow variabilities; 4.4 Conclusion and Recommendations; 5: Quantifying longitudinal land use/cover change in Geba catchment; 5.1 Introduction; 5.2 Study area description; 5.3 Data and methods; 5.3.1 Data acquisition; 5.3.2 Image pre-processing |
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5.3.3 Image classifications, accuracy assessments and post classifications5.4 Result and Discussion; 5.4.1 Classification and change detection; 5.4.2 Possible drivers of the land use/cover changes; 5.4.3 Effects of watershed management interventions on the LULC patterns; 5.5 Conclusion and recommendations; 6: Modelling hydrological response to land management dynamics; 6.1 Introduction; 6.2 Data and Methods; 6.2.1 Dynamic inpute datasets; 6.2.2 Methods; 6.3 Result and Discussion; 6.3.1 Calibration and validation of the Wflow hydrological model; 6.3.2 Streamflow responses to LULC changes |
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6.3.3 Hydrological alteration trends in response to the observed LULC changes6.3.4 Hydrological impacts of individual land use/land cover changes; 6.4 Conclusion and recommendations; 7: Modelling the impact of catchment management interventions on the low flows; 7.1 Introduction; 7.2 Study area description; 7.3 Data and methods; 7.3.1 Static dataset; 7.3.2 Dynamic datasets; 7.3.3 Methods; 7.4 Result and discussion; 7.4.1 Comparison of change in streamflow; 7.4.2 Model calibration and validation; 7.4.3 Comparison of water budget of the paired catchments |
| Summary |
The availability and distribution of water resources in catchments are influenced by various natural and anthropogenic factors. Human-induced environmental changes are key factors controlling the hydrological flows of semi-arid catchments. Land degradation, water scarcity and inefficient utilization of available water resources continue to be important constraints for socio-economic development in the headwater catchments of the Nile river basin in particular over the Ethiopian Catchments. This research investigates the impact of landscape anthropogenic changes on the hydrological processes in the Upper Tekeze basin (A tributary of the Nile). The hydrology of the basin is investigated through analysis of hydro-climatic data, remote sensing techniques, new field measurements and parsimonious hydrological models. The empirical evidence provided in this book confirms that human-induced environmental changes can significantly change the hydrology of catchments, both in negative (degradation) and in positive (restoration) ways. This book also shows that rainfall-runoff relationships in semi-arid catchments are non-uniform and hence the application of hydrological models in such catchments need special attention. Moreover, parsimonious dynamic hydrological model improves our understanding of the hydrological response to dynamic environmental changes |
| Notes |
Tesfay Gebretsadkan Gebremicael was born in Adwa, Ethiopia. He received his BSc degree in Agricultural Engineering from Hawasa University, Ethiopia, in 2006. Thereafter, he joined the Tigray Agricultural Research Institute (TARI), where he worked as an associate researcher in water resources and irrigation engineering. From October 2009 to June 2011, he followed the MSc programme in Water Resources Management, at UNESCO-IHE Institute for Water Education in Delft, The Netherlands. After obtaining his MSc degree, he returned to Ethiopia and continued to work with TARI as researcher in water resources and hydrology. In 2015, he started his PhD studies at UNESCO-IHE. During his PhD research, he studied the hydrology of the Upper Tekeze basin at various spatio-scales using a combination of different methods. His research interests include catchment hydrology, hydrological and river systems modelling, water resources management, spatial and remote sensing analysis and irrigation water management. He has presented his work at various national, regional and international conferences and has published several articles in international journals |
| Subject |
Water-supply -- Nile River Watershed
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Water-supply -- Environmental aspects -- Nile River Watershed
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Water-supply -- Effect of global warming on -- Nile River Watershed
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SCIENCE -- Environmental Science.
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TECHNOLOGY -- Engineering -- Civil.
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Water-supply.
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Water-supply -- Effect of global warming on.
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Water-supply -- Environmental aspects.
|
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Nile River Watershed.
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| Form |
Electronic book
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| ISBN |
9781000734423 |
|
9780367853167 |
|
1000734420 |
|
0367853167 |
|
9781000734829 |
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100073482X |
|
9781000734621 |
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1000734625 |
|
