Strategies to Cope with Risks of Uncertain Water Supply in Spate Irrigation Systems-Case Study: Gash Agricultural Scheme in Sudan

1 Introduction 
1.1 Spate irrigation 
1.2 Risk of uncertain water supply 
1.3 Strategies to cope with risk 
1.4 Problem statement 
1.5 Objectives 
1.6 Case study area 
1.7 Methods 
1.8 Thesis outline 
2 Risks of uncertain water supply in spate irrigation 
2.1 Introduction 
2.2 Data and methods 
2.3 Results and discussion 
2.4 Conclusions 
3 Adaptation strategies to cope with low, high and untimely floods: Lessons from the Gash spate irrigation system, Sudan 
3.1 Introduction 
3.2 Data and methods 
3.3 Results & discussion 
3.4 Conclusion 
4 Irrigation performance under alternative field designs in a spate irrigation system with large field dimensions 
4.1 Introduction 
4.2 Materials and methods 
4.3 Results and discussion 
4.4 Conclusion 
5 Flexibility as a strategy to cope with uncertain water supply in spate irrigation 
5.1 Introduction 
5.2 Conceptual framework for flexibility in spate irrigation systems 
5.3 Flexibility and real options in times of high, low and untimely floods 
5.4 Conclusion 
6 Conclusions and recommendations 
6.1 General 
6.2 Conclusions 
6.3 Main contribution 
6.4 Recommendation for further research 
Appendices 
Appendix 3-I 1 
Appendix 3-I 2 
Appendix 3-I 3