Estimation of Flow Characteristics of Ungauged Catchments Case Study in Zimbabwe

University – with references and summaries in English and Dutch. i ACKNOWLEDGEMENTS I have received tremendous assistance and encouragement from several people during my PhD studies in both the Netherlands and Zimbabwe. Firstly, I would like to express my gratitude to Prof. dr. A.M.J. Meijerink who accepted the challenge of supervising a student who was going to spend most of the time away from ITC, knowing fully well problems associated with such an arrangement. Several discussions we had with Prof Meijerink and his comments on several drafts of this thesis have been very illuminating. At all stages of preparing this thesis Prof Meijerink went out of his way to provide me with the necessary support. I am most grateful to Prof. dr. A. Stein for accepting to be my promotor. Prof Stein meticulously went over several drafts of this thesis, and each time I handed some material for his consideration, I always looked forward to receive his comments. Prof H.H.G. Savenije, my co-promotor, encouraged me to embark on a PhD on several occasions we met in Africa, and I am most grateful for the assistance he has provided. He always created time for discussions during his short but busy visits to the University of Zimbabwe. who kindly assisted me on rainfall-runoff modelling. The Institute of Water Research provided me with an office, and this is sincerely acknowledged. Zimbabwe, MEPP Project Director) were instrumental in encouraging me to start on a PhD. Dr Huizing went out of his way organizing my several visits to ITC. His comments which he termed " layman comments " on my thesis were very encouraging. To both Herman and Charles, thank you. The support provided by my colleagues in the Department of Geography and Environmental Science, University of Zimbabwe, is greatly appreciated. They took over my teaching obligations despite the department not having a full staff complement. Prof C.C. Mutambirwa's encouragement, and comments are greatly appreciated. Dr Pieter van der Zaag at the University of Zimbabwe has been very supportive over the years. He translated the English Summary of this thesis into Dutch, and I am very grateful for all the assistance that Pieter has provided. Sam Kusangaya and Tinos Madondo worked tirelessly even during ii off-working hours capturing data, and I am grateful for their assistance. The University of Zimbabwe is thanked for granting me leave to undertake my PhD studies. Mhlanga and Itai made …